My Network Lab: Configuring Multiprotocol BGP (MP-BGP)

MP-BGP allows you to consolidate a variety of protocol types under a single BGP configuration. These protocol types are called address families and include (as just a few examples):

* Unicast IPv4

* Multicast IPv4

* Unicast IPv6

* Multicast IPv6

Note: MP-BGP supports several additional address families, largely used to support virtualization
technologies, such as Virtual Private LAN Service (VPLS) and Layer 2 VPN (L2VPN).

MP-BGP contains several new elements and features not found in BGP-4, including:

* Address Family Identifier (AFI): Specifies the type of address being used by an
Address Family.

* Subsequent Address Family Identifier (SAFI): Provides additional address family
information for some address families.

* Multiprotocol Reachable Network Layer Reachability Information (MP_REACH_
NLRI): An attribute that transports a collection of reachable networks, along with
next-hop information.

* Multiprotocol Unreachable Network Layer Reachability Information (MP_
UNREACH_NLRI): An attribute that transports a collection of unreachable networks
(used to indicate that specific previously reachable networks are no longer
reachable).

* BGP Capabilities Advertisement: Used by a router to tell a neighboring router its
BGP capabilities—used during BGP session negotiation.

Note that the multiprotocol extensions making up MP-BGP are backward compatible with traditional BGP-4. As a result, a traditional BGP-4 router can form a neighborship with an MP-BGP router, and simply ignore any received BGP messages containing unrecognized extensions.

R1#conf t

Enter configuration commands, one per line. End with CNTL/Z.

R1(config)#interface loop 0

R1(config-if)#

*Jul 21 07:49:32.203: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up

R1(config-if)#ip address 10.0.0.1 255.255.255.0

R1(config-if)#ipv6 address 2001:db8:beef:11::1/64

R1(config-if)#

R1(config-if)#interface loop 1

R1(config-if)#

*Jul 21 07:51:03.207: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback1, changed state to up

R1(config-if)#ip address 10.1.0.1 255.255.0.0

R1(config-if)#ipv6 address 2001:db8:beef:1::1/64

R1(config-if)#

R1(config-if)#interface serial 2/0

R1(config-if)#ip address 192.168.1.1 255.255.255.252

R1(config-if)#ipv6 address 2001:db8:feed:1::1/64

R1(config-if)#no shut

R1(config-if)#

*Jul 21 07:52:34.911: %LINK-3-UPDOWN: Interface Serial2/0, changed state to up

R1(config-if)#

*Jul 21 07:52:35.923: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to up

R1(config-if)#end

R1#

R2#conf t

Enter configuration commands, one per line. End with CNTL/Z.

R2(config)#interface loop 0

R2(config-if)#

*Jul 21 07:55:01.503: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up

R2(config-if)#ip address 172.17.2.1 255.255.255.0

R2(config-if)#ipv6 address 2001:db8:cafe:22::1/64

R2(config-if)#

R2(config-if)#interface loop 1

R2(config-if)#

*Jul 21 07:55:51.731: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback1, changed state to up

R2(config-if)#ip address 172.16.2.1 255.255.255.0

R2(config-if)#ipv6 address 2001:db8:cafe:2::1/64

R2(config-if)#

R2(config-if)#interface serial 2/0

R2(config-if)#ip address 192.168.1.2 255.255.255.252

R2(config-if)#ipv6 address 2001:db8:feed:1::2/64

R2(config-if)#no shut

R2(config-if)#

*Jul 21 07:57:19.399: %LINK-3-UPDOWN: Interface Serial2/0, changed state to up

R2(config-if)#

*Jul 21 07:57:20.411: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to up

R2(config-if)#do ping 192.168.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 8/29/44 ms

R2(config-if)#

R2(config-if)#do ping 2001:db8:feed:1::1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 2001:DB8:FEED:1::1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 12/15/16 ms

R2(config-if)#

R2(config-if)#interface serial 2/1

R2(config-if)#ip address 172.16.1.1 255.255.255.252

R2(config-if)#ipv6 address 2001:db8:cafe:1::1/64

R2(config-if)#no shut

R2(config-if)#

*Jul 21 07:59:37.451: %LINK-3-UPDOWN: Interface Serial2/1, changed state to up

R2(config-if)#

*Jul 21 07:59:38.463: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/1, changed state to up

R2(config-if)#end

R2#

R3#conf t

Enter configuration commands, one per line. End with CNTL/Z.

R3(config)#interface loop 0

R3(config-if)#

*Jul 21 08:00:05.927: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up

R3(config-if)#ip address 172.17.3.1 255.255.255.0

R3(config-if)#ipv6 address 2001:db8:cafe:33::1/64

R3(config-if)#

R3(config-if)#interface loop 1

R3(config-if)#

*Jul 21 08:01:03.951: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback1, changed state to up

R3(config-if)#ip address 172.16.3.1 255.255.255.0

R3(config-if)#ipv6 address 2001:db8:cafe:3::1/64

R3(config-if)#

R3(config-if)#interface serial 2/1

R3(config-if)#ip address 172.16.1.2 255.255.255.252

R3(config-if)#ipv6 address 2001:db8:cafe:1::2/64

R3(config-if)#no shut

R3(config-if)#

*Jul 21 08:02:27.059: %LINK-3-UPDOWN: Interface Serial2/1, changed state to up

R3(config-if)#

*Jul 21 08:02:28.071: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/1, changed state to up

R3(config-if)#do ping 172.16.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 8/17/24 ms

R3(config-if)#

R3(config-if)#do ping 2001:db8:cafe:1::1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 2001:DB8:CAFE:1::1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 16/18/20 ms

R3(config-if)#end

R2#conf t // CONFIGURE EIGRP FOR IPv4 AND IPv6 ON CUSTOMER NETWORK

Enter configuration commands, one per line. End with CNTL/Z.

R2(config)#ipv6 unicast-routing

R2(config)#router eigrp 1

R2(config-router)#eigrp router-id 2.2.2.2

R2(config-router)#network 172.16.0.0

R2(config-router)#network 172.17.0.0

R2(config-router)#

R2(config-router)#ipv6 router eigrp 2

R2(config-rtr)#eigrp router-id 2.2.2.2

R2(config-rtr)#

R2(config-rtr)#interface loop 0

R2(config-if)#ipv6 eigrp 2

R2(config-if)#

R2(config-if)#interface loop 1

R2(config-if)#ipv6 eigrp 2

R2(config-if)#

R2(config-if)#interface serial 2/1

R2(config-if)#ipv6 eigrp 2

R2(config-if)#end

R2#

*Jul 21 08:07:36.683: %DUAL-5-NBRCHANGE: EIGRP-IPv4 1: Neighbor 172.16.1.2 (Serial2/1) is up: new adjacency

R2#

*Jul 21 08:10:00.775: %DUAL-5-NBRCHANGE: EIGRP-IPv6 2: Neighbor FE80::C803:1CFF:FE48:0 (Serial2/1) is up: new adjacency

R3#conf t

Enter configuration commands, one per line. End with CNTL/Z.

R3(config)#ipv6 unicast

R3(config)#router eigrp 1

R3(config-router)#eigrp router-id 3.3.3.3

R3(config-router)#network 172.16.0.0

*Jul 21 08:07:36.631: %DUAL-5-NBRCHANGE: EIGRP-IPv4 1: Neighbor 172.16.1.1 (Serial2/1) is up: new adjacency

R3(config-router)#network 172.17.0.0

R3(config-router)#

R3(config-router)#ipv6 router eigrp 2

R3(config-rtr)#interface loop 0

R3(config-if)#ipv6 eigrp 2

R3(config-if)#

R3(config-if)#interface loop 1

R3(config-if)#ipv6 eigrp 2

R3(config-if)#

R3(config-if)#interface serial 2/1

R3(config-if)#ipv6 eigrp 2

R3(config-if)#

*Jul 21 08:10:00.703: %DUAL-5-NBRCHANGE: EIGRP-IPv6 2: Neighbor FE80::C802:23FF:FE24:0 (Serial2/1) is up: new adjacency

R3(config-if)#end

R3#

R1#conf t // CONFIGURE MP-BGP ON ISP (EBGP WITH R2)

Enter configuration commands, one per line. End with CNTL/Z.

R1(config)#ipv6 unicast

R1(config)#router bgp 65100

R1(config-router)#bgp router-id 1.1.1.1

R1(config-router)#neighbor 192.168.1.2 remote-as 65000

R1(config-router)#

R1(config-router)#?

Router configuration commands:

address-family Enter Address Family command mode

aggregate-address Configure BGP aggregate entries

auto-summary Enable automatic network number summarization

bgp BGP specific commands

default Set a command to its defaults

default-information Control distribution of default information

default-metric Set metric of redistributed routes

distance Define an administrative distance

distribute-list Filter networks in routing updates

exit Exit from routing protocol configuration mode

help Description of the interactive help system

maximum-paths Forward packets over multiple paths

neighbor Specify a neighbor router

network Specify a network to announce via BGP

no Negate a command or set its defaults

redistribute Redistribute information from another routing protocol

route-server-context Enter route server context command mode

scope Enter scope command mode

snmp Modify snmp parameters

synchronization Perform IGP synchronization

table-map Map external entry attributes into routing table

template Enter template command mode

timers Adjust routing timers

R1(config-router)#address-family ?

ipv4 Address family

ipv6 Address family

l2vpn Address family

nsap Address family

rtfilter Address family

vpnv4 Address family

vpnv6 Address family

R1(config-router)#address-family ipv4 ?

mdt Address Family modifier

multicast Address Family modifier

mvpn Address Family modifier

unicast Address Family modifier

vrf Specify parameters for a VPN Routing/Forwarding instance

<cr>

R1(config-router)#address-family ipv4 unicast // CONFIGURE IPv4 ADDRESS FAMILY (AF)

R1(config-router-af)#?

Router Address Family configuration commands:

aggregate-address Configure BGP aggregate entries

auto-summary Enable automatic network number summarization

bgp BGP specific commands

default Set a command to its defaults

default-information Control distribution of default information

default-metric Set metric of redistributed routes

distance Define an administrative distance

distribute-list Filter networks in routing updates

exit-address-family Exit from Address Family configuration mode

help Description of the interactive help system

maximum-paths Forward packets over multiple paths

neighbor Specify a neighbor router

network Specify a network to announce via BGP

no Negate a command or set its defaults

redistribute Redistribute information from another routing protocol

snmp Modify snmp parameters

synchronization Perform IGP synchronization

table-map Map external entry attributes into routing table

R1(config-router-af)#network 10.1.0.0 mask 255.255.0.0

R1(config-router-af)#neighbor 192.168.1.2 activate

R1(config-router-af)#exit-address-family

R1(config-router)#address-family ipv6 unicast // CONFIGURE IPv6 AF

R1(config-router-af)#network 2001:db8:beef:1::/64

R1(config-router-af)#neighbor 192.168.1.2 activate

R1(config-router-af)#neighbor 192.168.1.2 route-map HOPv6 out // CONFIGURE A ROUTE MAP FOR IPv6 OUTBOUND EBGP UPDATES TO R2

R1(config-router-af)#exit

R1(config-router)#route-map HOPv6 permit 10

R1(config-route-map)#set ?

as-path Prepend string for a BGP AS-path attribute

automatic-tag Automatically compute TAG value

clns OSI summary address

comm-list set BGP community list (for deletion)

community BGP community attribute

dampening Set BGP route flap dampening parameters

default Set default information

extcomm-list Set BGP/VPN extended community list (for deletion)

extcommunity BGP extended community attribute

global Set to global routing table

interface Output interface

ip IP specific information

ipv6 IPv6 specific information

level Where to import route

local-preference BGP local preference path attribute

metric Metric value for destination routing protocol

metric-type Type of metric for destination routing protocol

mpls-label Set MPLS label for prefix

origin BGP origin code

tag Tag value for destination routing protocol

traffic-index BGP traffic classification number for accounting

vrf Define VRF name

weight BGP weight for routing table

R1(config-route-map)#set ipv6 ?

address IPv6 address

default Set default information

next-hop IPv6 Next hop

precedence IPv6 Precedence

R1(config-route-map)#set ipv6 next-hop ?

X:X:X:X::X Next hop address

encapsulate Encapsulation profile for VPN nexthop

peer-address Use peer address (for BGP only)

R1(config-route-map)#set ipv6 next-hop 2001:db8:feed:1::1 // NOTICE IPv6 NEX HOP IS R1 SERIAL 2/0

R1(config-route-map)#end

R1#

*Jul 21 08:19:10.159: %BGP_SESSION-5-ADJCHANGE: neighbor 192.168.1.2 IPv6 Unicast topology base removed from session Capability changed

*Jul 21 08:19:10.163: %BGP-5-ADJCHANGE: neighbor 192.168.1.2 Up

R1#

*Jul 21 08:22:44.635: %BGP-5-ADJCHANGE: neighbor 192.168.1.2 Down Peer closed the session

*Jul 21 08:22:44.639: %BGP_SESSION-5-ADJCHANGE: neighbor 192.168.1.2 IPv4 Unicast topology base removed from session Peer closed the session

*Jul 21 08:22:45.447: %BGP-5-ADJCHANGE: neighbor 192.168.1.2 Up

R1#

R2#conf t // CONFIGURE MP-BGP ON R2 (EBGP WITH R1 AND IBGP WITH R3)

Enter configuration commands, one per line. End with CNTL/Z.

R2(config)#router bgp 65000

R2(config-router)#bgp router-id 2.2.2.2

R2(config-router)#neighbor 192.168.1.1 remote-as 65100

R2(config-router)#

*Jul 21 08:19:10.315: %BGP-5-ADJCHANGE: neighbor 192.168.1.1 Up

R2(config-router)#

R2(config-router)#neighbor 172.17.3.1 remote-as 65000 // IPv4 IBGP PEER

R2(config-router)#neighbor 172.17.3.1 update-source loop 0 // USE LOOPBACK 0 AS SOURCE IP FOR BGP UPDATES

R2(config-router)#

R2(config-router)#neighbor 2001:db8:cafe:33::1 remote-as 65000 // IPv6 IBGP PEER

R2(config-router)#neighbor 2001:db8:cafe:33::1 update-source loop 0

R2(config-router)#address-family ipv4 unicast

R2(config-router-af)#network 172.16.2.0 mask 255.255.255.0

R2(config-router-af)#neighbor 192.168.1.1 activate

R2(config-router-af)#

R2(config-router-af)#neighbor 172.17.3.1 activate

R2(config-router-af)#neighbor 172.17.3.1 next-hop-self // USE R2 AS NEXT HOP FOR EBGP LEARNED ROUTES

R2(config-router-af)#exit

R2(config-router)#address-family ipv6 unicast

R2(config-router-af)#network 2001:db8:cafe:2::/64

R2(config-router-af)#neighbor 192.168.1.1 activate

R2(config-router-af)#

*Jul 21 08:22:44.751: %BGP-5-ADJCHANGE: neighbor 192.168.1.1 Down Capability changed

*Jul 21 08:22:44.755: %BGP_SESSION-5-ADJCHANGE: neighbor 192.168.1.1 IPv4 Unicast topology base removed from session Capability changed

*Jul 21 08:22:45.587: %BGP-5-ADJCHANGE: neighbor 192.168.1.1 Up

R2(config-router-af)#neighbor 192.168.1.1 route-map HOPv6 out // SIMILAR ROUTE MAP IN R1

R2(config-router-af)#

R2(config-router-af)#neighbor 2001:db8:cafe:33::1 activate

R2(config-router-af)#neighbor 2001:db8:cafe:33::1 next-hop-self

R2(config-router-af)#exit

R2(config-router)#route-map HOPv6

R2(config-route-map)#set ipv6 next-hop 2001:db8:feed:1::2 // USE R2 IPv6 WAN IP (SERIAL 2/0)

R2(config-route-map)#end

R2#

*Jul 21 08:28:48.047: %BGP-5-ADJCHANGE: neighbor 172.17.3.1 Up

R2#

*Jul 21 08:31:54.431: %BGP-5-ADJCHANGE: neighbor 2001:DB8:CAFE:33::1 Up

R2#

R3#conf t // CONFIGURE MP-BGP ON R3 (IBGP WITH R2)

Enter configuration commands, one per line. End with CNTL/Z.

R3(config)#router bgp 65000

R3(config-router)#bgp router-id 3.3.3.3

R3(config-router)#neighbor 2001:db8:cafe:22::1 remote-as 65000

R3(config-router)#neighbor 2001:db8:cafe:22::1 update-source loop 0

R3(config-router)#

R3(config-router)#neighbor 172.17.2.1 remote-as 65000

R3(config-router)#

*Jul 21 08:28:47.971: %BGP-5-ADJCHANGE: neighbor 172.17.2.1 Up

R3(config-router)#

R3(config-router)#neighbor 172.17.2.1 update-source loop 0

R3(config-router)#

R3(config-router)#address-family ipv4 unicast

R3(config-router-af)#network 172.16.3.0 mask 255.255.0.0

% BGP: Incorrect network or mask/prefix-length configured

R3(config-router-af)#network 172.16.3.0 mask 255.255.255.0

R3(config-router-af)#neighbor 172.17.2.1 activate

R3(config-router-af)#exit

R3(config-router)#address-family ipv6 unicast

R3(config-router-af)#network 2001:db8:cafe:3::/64

R3(config-router-af)#neighbor 2001:db8:cafe:22::1 activate

R3(config-router-af)#

*Jul 21 08:31:54.359: %BGP-5-ADJCHANGE: neighbor 2001:DB8:CAFE:22::1 Up

R3(config-router-af)#end

R3#

R2#show bgp ?

* All scopes

all All address families

ipv4 Address family

ipv6 Address family

l2vpn Address family

nsap Address family

rtfilter Address family

vpnv4 Address family

vpnv6 Address family

vrf VRF scope

R2#show bgp all ?

community Display routes matching the communities

community-list Display routes matching the community-list

dampening Display detailed information about dampening

extcommunity-list Display routes matching the extcommunity-list

filter-list Display routes conforming to the filter-list

inconsistent-as Display only routes with inconsistent origin ASs

neighbors Detailed information on TCP and BGP neighbor connections

nexthops Nexthop address table

paths Path information

peer-group Display information on peer-groups

pending-prefixes Display prefixes pending deletion

quote-regexp Display routes matching the AS path "regular expression"

regexp Display routes matching the AS path regular expression

replication Display replication status of update-group(s)

rib-failure Display bgp routes that failed to install in the routing

table (RIB)

summary Summary of BGP neighbor status

update-group Display information on update-groups

update-sources Update source interface table

version Display prefixes with matching version numbers

| Output modifiers

<cr>

R2#show bgp all neighbors // VERIFY IPv4 AND IPv4 BGP PEERING

For address family: IPv4 Unicast

BGP neighbor is 172.17.3.1, remote AS 65000, internal link // INTERNAL LINK REFERS IBGP

BGP version 4, remote router ID 3.3.3.3

BGP state = Established, up for 00:06:16

Last read 00:00:46, last write 00:00:02, hold time is 180, keepalive interval is 60 seconds

Neighbor sessions:

1 active, is not multisession capable (disabled)

Neighbor capabilities:

Route refresh: advertised and received(new)

Four-octets ASN Capability: advertised and received

Address family IPv4 Unicast: advertised and received

Enhanced Refresh Capability: advertised and received

Multisession Capability:

Stateful switchover support enabled: NO for session 1

Message statistics:

InQ depth is 0

OutQ depth is 0

Sent Rcvd

Opens: 1 1

Notifications: 0 0

Updates: 3 2

Keepalives: 9 8

Route Refresh: 0 0

Total: 13 11

Default minimum time between advertisement runs is 0 seconds

Address tracking is enabled, the RIB does have a route to 172.17.3.1

Connections established 1; dropped 0

Last reset never

Transport(tcp) path-mtu-discovery is enabled

Graceful-Restart is disabled

Connection state is ESTAB, I/O status: 1, unread input bytes: 0

Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 255

Local host: 172.17.2.1, Local port: 26767

Foreign host: 172.17.3.1, Foreign port: 179

Connection tableid (VRF): 0

Maximum output segment queue size: 50

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0x2D079C):

Timer Starts Wakeups Next

Retrans 11 0 0x0

TimeWait 0 0 0x0

AckHold 10 7 0x0

SendWnd 0 0 0x0

KeepAlive 0 0 0x0

GiveUp 0 0 0x0

PmtuAger 1 0 0x307090

DeadWait 0 0 0x0

Linger 0 0 0x0

ProcessQ 0 0 0x0

iss: 1372476788 snduna: 1372477155 sndnxt: 1372477155

irs: 2428860457 rcvnxt: 2428860745

sndwnd: 16018 scale: 0 maxrcvwnd: 16384

rcvwnd: 16097 scale: 0 delrcvwnd: 287

SRTT: 770 ms, RTTO: 2360 ms, RTV: 1590 ms, KRTT: 0 ms

minRTT: 16 ms, maxRTT: 1000 ms, ACK hold: 200 ms

Status Flags: active open

Option Flags: nagle, path mtu capable

IP Precedence value : 6

Datagrams (max data segment is 1460 bytes):

Rcvd: 21 (out of order: 0), with data: 11, total data bytes: 287

Sent: 22 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 11, total data bytes: 366

Packets received in fast path: 0, fast processed: 0, slow path: 0

fast lock acquisition failures: 0, slow path: 0

TCP Semaphore 0x6A359FDC FREE

BGP neighbor is 192.168.1.1, remote AS 65100, external link // EXTERNAL LINK REFERS EBGP

BGP version 4, remote router ID 1.1.1.1

BGP state = Established, up for 00:12:18

Last read 00:00:40, last write 00:00:37, hold time is 180, keepalive interval is 60 seconds

Neighbor sessions:

1 active, is not multisession capable (disabled)

Neighbor capabilities:

Route refresh: advertised and received(new)

Four-octets ASN Capability: advertised and received

Address family IPv4 Unicast: advertised and received

Address family IPv6 Unicast: advertised and received

Enhanced Refresh Capability: advertised and received

Multisession Capability:

Stateful switchover support enabled: NO for session 1

Message statistics:

InQ depth is 0

OutQ depth is 0

Sent Rcvd

Opens: 1 1

Notifications: 0 0

Updates: 9 4

Keepalives: 13 15

Route Refresh: 0 0

Total: 25 20

Default minimum time between advertisement runs is 30 seconds

Address tracking is enabled, the RIB does have a route to 192.168.1.1

Connections established 2; dropped 1

Last reset 00:12:19, due to Capability changed of session 1

Transport(tcp) path-mtu-discovery is enabled

Graceful-Restart is disabled

Connection state is ESTAB, I/O status: 1, unread input bytes: 0

Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 1

Local host: 192.168.1.2, Local port: 20972

Foreign host: 192.168.1.1, Foreign port: 179

Connection tableid (VRF): 0

Maximum output segment queue size: 50

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0x2D07A0):

Timer Starts Wakeups Next

Retrans 20 0 0x0

TimeWait 0 0 0x0

AckHold 17 14 0x0

SendWnd 0 0 0x0

KeepAlive 0 0 0x0

GiveUp 0 0 0x0

PmtuAger 92 91 0x2D0B94

DeadWait 0 0 0x0

Linger 0 0 0x0

ProcessQ 0 0 0x0

iss: 3419991927 snduna: 3419992768 sndnxt: 3419992768

irs: 2818091020 rcvnxt: 2818091568

sndwnd: 15544 scale: 0 maxrcvwnd: 16384

rcvwnd: 15837 scale: 0 delrcvwnd: 547

SRTT: 931 ms, RTTO: 1468 ms, RTV: 537 ms, KRTT: 0 ms

minRTT: 8 ms, maxRTT: 1000 ms, ACK hold: 200 ms

Status Flags: active open

Option Flags: nagle, path mtu capable

IP Precedence value : 6

Datagrams (max data segment is 1460 bytes):

Rcvd: 37 (out of order: 0), with data: 18, total data bytes: 547

Sent: 39 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 21, total data bytes: 840

Packets received in fast path: 0, fast processed: 0, slow path: 0

fast lock acquisition failures: 0, slow path: 0

TCP Semaphore 0x6A359E8C FREE

For address family: IPv6 Unicast

BGP neighbor is 2001:DB8:CAFE:33::1, remote AS 65000, internal link

BGP version 4, remote router ID 3.3.3.3

BGP state = Established, up for 00:03:10

Last read 00:00:38, last write 00:00:17, hold time is 180, keepalive interval is 60 seconds

Neighbor sessions:

1 active, is not multisession capable (disabled)

Neighbor capabilities:

Route refresh: advertised and received(new)

Four-octets ASN Capability: advertised and received

Address family IPv6 Unicast: advertised and received

Enhanced Refresh Capability: advertised and received

Multisession Capability:

Stateful switchover support enabled: NO for session 1

Message statistics:

InQ depth is 0

OutQ depth is 0

Sent Rcvd

Opens: 1 1

Notifications: 0 0

Updates: 3 2

Keepalives: 5 5

Route Refresh: 0 0

Total: 9 8

Default minimum time between advertisement runs is 0 seconds

Address tracking is enabled, the RIB does have a route to 2001:DB8:CAFE:33::1

Connections established 1; dropped 0

Last reset never

Transport(tcp) path-mtu-discovery is enabled

Graceful-Restart is disabled

Connection state is ESTAB, I/O status: 1, unread input bytes: 0

Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 255

Local host: 2001:DB8:CAFE:22::1, Local port: 59230

Foreign host: 2001:DB8:CAFE:33::1, Foreign port: 179

Connection tableid (VRF): 0

Maximum output segment queue size: 50

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0x2D07A0):

Timer Starts Wakeups Next

Retrans 7 0 0x0

TimeWait 0 0 0x0

AckHold 6 3 0x0

SendWnd 0 0 0x0

KeepAlive 0 0 0x0

GiveUp 0 0 0x0

PmtuAger 1 0 0x334898

DeadWait 0 0 0x0

Linger 0 0 0x0

ProcessQ 0 0 0x0

iss: 4247843150 snduna: 4247843492 sndnxt: 4247843492

irs: 3469059070 rcvnxt: 3469059329

sndwnd: 16043 scale: 0 maxrcvwnd: 16384

rcvwnd: 16126 scale: 0 delrcvwnd: 258

SRTT: 607 ms, RTTO: 2949 ms, RTV: 2342 ms, KRTT: 0 ms

minRTT: 8 ms, maxRTT: 1000 ms, ACK hold: 200 ms

Status Flags: active open

Option Flags: nagle, path mtu capable

IP Precedence value : 6

Datagrams (max data segment is 1440 bytes):

Rcvd: 13 (out of order: 0), with data: 7, total data bytes: 258

Sent: 14 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 14, total data bytes: 909

Packets received in fast path: 0, fast processed: 0, slow path: 0

fast lock acquisition failures: 0, slow path: 0

TCP Semaphore 0x6AAED7A0 FREE

BGP neighbor is 192.168.1.1, remote AS 65100, external link

BGP version 4, remote router ID 1.1.1.1

BGP state = Established, up for 00:12:18

Last read 00:00:40, last write 00:00:37, hold time is 180, keepalive interval is 60 seconds

Neighbor sessions:

1 active, is not multisession capable (disabled)

Neighbor capabilities:

Route refresh: advertised and received(new)

Four-octets ASN Capability: advertised and received

Address family IPv4 Unicast: advertised and received

Address family IPv6 Unicast: advertised and received

Enhanced Refresh Capability: advertised and received

Multisession Capability:

Stateful switchover support enabled: NO for session 1

Message statistics:

InQ depth is 0

OutQ depth is 0

Sent Rcvd

Opens: 1 1

Notifications: 0 0

Updates: 9 4

Keepalives: 13 15

Route Refresh: 0 0

Total: 25 20

Default minimum time between advertisement runs is 30 seconds

Address tracking is enabled, the RIB does have a route to 192.168.1.1

Connections established 2; dropped 1

Last reset 00:12:21, due to Capability changed of session 1

Transport(tcp) path-mtu-discovery is enabled

Graceful-Restart is disabled

Connection state is ESTAB, I/O status: 1, unread input bytes: 0

Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 1

Local host: 192.168.1.2, Local port: 20972

Foreign host: 192.168.1.1, Foreign port: 179

Connection tableid (VRF): 0

Maximum output segment queue size: 50

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0x2D10C8):

Timer Starts Wakeups Next

Retrans 20 0 0x0

TimeWait 0 0 0x0

AckHold 17 14 0x0

SendWnd 0 0 0x0

KeepAlive 0 0 0x0

GiveUp 0 0 0x0

PmtuAger 93 92 0x2D1150

DeadWait 0 0 0x0

Linger 0 0 0x0

ProcessQ 0 0 0x0

iss: 3419991927 snduna: 3419992768 sndnxt: 3419992768

irs: 2818091020 rcvnxt: 2818091568

sndwnd: 15544 scale: 0 maxrcvwnd: 16384

rcvwnd: 15837 scale: 0 delrcvwnd: 547

SRTT: 931 ms, RTTO: 1468 ms, RTV: 537 ms, KRTT: 0 ms

minRTT: 8 ms, maxRTT: 1000 ms, ACK hold: 200 ms

Status Flags: active open

Option Flags: nagle, path mtu capable

IP Precedence value : 6

Datagrams (max data segment is 1460 bytes):

Rcvd: 37 (out of order: 0), with data: 18, total data bytes: 547

Sent: 39 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 21, total data bytes: 840

Packets received in fast path: 0, fast processed: 0, slow path: 0

fast lock acquisition failures: 0, slow path: 0

TCP Semaphore 0x6A359E8C FREE

For address family: IPv4 Multicast

R2#show ip bgp neighbors // ALTERNATIVE VERIFICATION COMMAND

BGP neighbor is 172.17.3.1, remote AS 65000, internal link

BGP version 4, remote router ID 3.3.3.3

BGP state = Established, up for 00:11:20

Last read 00:00:19, last write 00:00:45, hold time is 180, keepalive interval is 60 seconds

Neighbor sessions:

1 active, is not multisession capable (disabled)

Neighbor capabilities:

Route refresh: advertised and received(new)

Four-octets ASN Capability: advertised and received

Address family IPv4 Unicast: advertised and received

Enhanced Refresh Capability: advertised and received

Multisession Capability:

Stateful switchover support enabled: NO for session 1

Message statistics:

InQ depth is 0

OutQ depth is 0

Sent Rcvd

Opens: 1 1

Notifications: 0 0

Updates: 3 2

Keepalives: 14 14

Route Refresh: 0 0

Total: 18 17

Default minimum time between advertisement runs is 0 seconds

For address family: IPv4 Unicast

Session: 172.17.3.1

BGP table version 6, neighbor version 6/0

Output queue size : 0

Index 3, Advertise bit 1

3 update-group member

NEXT_HOP is always this router for eBGP paths

Slow-peer detection is disabled

Slow-peer split-update-group dynamic is disabled

Sent Rcvd

Prefix activity: ---- ----

Prefixes Current: 2 1 (Consumes 64 bytes)

Prefixes Total: 2 1

Implicit Withdraw: 0 0

Explicit Withdraw: 0 0

Used as bestpath: n/a 1

Used as multipath: n/a 0

Outbound Inbound

Local Policy Denied Prefixes: -------- -------

Bestpath from this peer: 1 n/a

Total: 1 0

Number of NLRIs in the update sent: max 1, min 0

Last detected as dynamic slow peer: never

Dynamic slow peer recovered: never

Refresh Epoch: 1

Last Sent Refresh Start-of-rib: never

Last Sent Refresh End-of-rib: never

Last Received Refresh Start-of-rib: never

Last Received Refresh End-of-rib: never

Sent Rcvd

Refresh activity: ---- ----

Refresh Start-of-RIB 0 0

Refresh End-of-RIB 0 0

Address tracking is enabled, the RIB does have a route to 172.17.3.1

Connections established 1; dropped 0

Last reset never

Transport(tcp) path-mtu-discovery is enabled

Graceful-Restart is disabled

Connection state is ESTAB, I/O status: 1, unread input bytes: 0

Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 255

Local host: 172.17.2.1, Local port: 26767

Foreign host: 172.17.3.1, Foreign port: 179

Connection tableid (VRF): 0

Maximum output segment queue size: 50

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0x31AF88):

Timer Starts Wakeups Next

Retrans 16 0 0x0

TimeWait 0 0 0x0

AckHold 16 13 0x0

SendWnd 0 0 0x0

KeepAlive 0 0 0x0

GiveUp 0 0 0x0

PmtuAger 47 46 0x31B5AC

DeadWait 0 0 0x0

Linger 0 0 0x0

ProcessQ 0 0 0x0

iss: 1372476788 snduna: 1372477250 sndnxt: 1372477250

irs: 2428860457 rcvnxt: 2428860859

sndwnd: 15923 scale: 0 maxrcvwnd: 16384

rcvwnd: 15983 scale: 0 delrcvwnd: 401

SRTT: 882 ms, RTTO: 1768 ms, RTV: 886 ms, KRTT: 0 ms

minRTT: 16 ms, maxRTT: 1000 ms, ACK hold: 200 ms

Status Flags: active open

Option Flags: nagle, path mtu capable

IP Precedence value : 6

Datagrams (max data segment is 1460 bytes):

Rcvd: 32 (out of order: 0), with data: 17, total data bytes: 401

Sent: 33 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 16, total data bytes: 461

Packets received in fast path: 0, fast processed: 0, slow path: 0

fast lock acquisition failures: 0, slow path: 0

TCP Semaphore 0x6A359FDC FREE

BGP neighbor is 192.168.1.1, remote AS 65100, external link

BGP version 4, remote router ID 1.1.1.1

BGP state = Established, up for 00:17:24

Last read 00:00:22, last write 00:00:17, hold time is 180, keepalive interval is 60 seconds

Neighbor sessions:

1 active, is not multisession capable (disabled)

Neighbor capabilities:

Route refresh: advertised and received(new)

Four-octets ASN Capability: advertised and received

Address family IPv4 Unicast: advertised and received

Address family IPv6 Unicast: advertised and received

Enhanced Refresh Capability: advertised and received

Multisession Capability:

Stateful switchover support enabled: NO for session 1

Message statistics:

InQ depth is 0

OutQ depth is 0

Sent Rcvd

Opens: 1 1

Notifications: 0 0

Updates: 9 4

Keepalives: 19 21

Route Refresh: 0 0

Total: 31 26

Default minimum time between advertisement runs is 30 seconds

For address family: IPv4 Unicast

Session: 192.168.1.1

BGP table version 6, neighbor version 6/0

Output queue size : 0

Index 2, Advertise bit 0

2 update-group member

Slow-peer detection is disabled

Slow-peer split-update-group dynamic is disabled

Sent Rcvd

Prefix activity: ---- ----

Prefixes Current: 2 1 (Consumes 64 bytes)

Prefixes Total: 2 1

Implicit Withdraw: 0 0

Explicit Withdraw: 0 0

Used as bestpath: n/a 1

Used as multipath: n/a 0

Outbound Inbound

Local Policy Denied Prefixes: -------- -------

Bestpath from this peer: 1 n/a

Invalid Path: 1 n/a

Total: 2 0

Number of NLRIs in the update sent: max 1, min 0

Last detected as dynamic slow peer: never

Dynamic slow peer recovered: never

Refresh Epoch: 1

Last Sent Refresh Start-of-rib: never

Last Sent Refresh End-of-rib: never

Last Received Refresh Start-of-rib: never

Last Received Refresh End-of-rib: never

Sent Rcvd

Refresh activity: ---- ----

Refresh Start-of-RIB 0 0

Refresh End-of-RIB 0 0

For address family: IPv6 Unicast

Session: 192.168.1.1

BGP table version 4, neighbor version 4/0

Output queue size : 0

Index 2, Advertise bit 0

2 update-group member

Outbound path policy configured

Route map for outgoing advertisements is HOPv6

Slow-peer detection is disabled

Slow-peer split-update-group dynamic is disabled

Sent Rcvd

Prefix activity: ---- ----

Prefixes Current: 2 1 (Consumes 88 bytes)

Prefixes Total: 2 1

Implicit Withdraw: 0 0

Explicit Withdraw: 2 0

Used as bestpath: n/a 1

Used as multipath: n/a 0

Outbound Inbound

Local Policy Denied Prefixes: -------- -------

Bestpath from this peer: 1 n/a

Other Policies: 2 n/a

Total: 3 0

Number of NLRIs in the update sent: max 1, min 0

Last detected as dynamic slow peer: never

Dynamic slow peer recovered: never

Refresh Epoch: 1

Last Sent Refresh Start-of-rib: 00:14:09

Last Sent Refresh End-of-rib: 00:14:09

Refresh-Out took 0 seconds

Last Received Refresh Start-of-rib: never

Last Received Refresh End-of-rib: never

Sent Rcvd

Refresh activity: ---- ----

Refresh Start-of-RIB 1 0

Refresh End-of-RIB 1 0

Address tracking is enabled, the RIB does have a route to 192.168.1.1

Connections established 2; dropped 1

Last reset 00:17:25, due to Capability changed of session 1

Transport(tcp) path-mtu-discovery is enabled

Graceful-Restart is disabled

Connection state is ESTAB, I/O status: 1, unread input bytes: 0

Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 1

Local host: 192.168.1.2, Local port: 20972

Foreign host: 192.168.1.1, Foreign port: 179

Connection tableid (VRF): 0

Maximum output segment queue size: 50

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0x31B41C):

Timer Starts Wakeups Next

Retrans 26 0 0x0

TimeWait 0 0 0x0

AckHold 23 20 0x0

SendWnd 0 0 0x0

KeepAlive 0 0 0x0

GiveUp 0 0 0x0

PmtuAger 323 322 0x31B518

DeadWait 0 0 0x0

Linger 0 0 0x0

ProcessQ 0 0 0x0

iss: 3419991927 snduna: 3419992882 sndnxt: 3419992882

irs: 2818091020 rcvnxt: 2818091682

sndwnd: 15430 scale: 0 maxrcvwnd: 16384

rcvwnd: 15723 scale: 0 delrcvwnd: 661

SRTT: 969 ms, RTTO: 1216 ms, RTV: 247 ms, KRTT: 0 ms

minRTT: 8 ms, maxRTT: 1000 ms, ACK hold: 200 ms

Status Flags: active open

Option Flags: nagle, path mtu capable

IP Precedence value : 6

Datagrams (max data segment is 1460 bytes):

Rcvd: 49 (out of order: 0), with data: 24, total data bytes: 661

Sent: 51 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 27, total data bytes: 954

Packets received in fast path: 0, fast processed: 0, slow path: 0

fast lock acquisition failures: 0, slow path: 0

TCP Semaphore 0x6A359E8C FREE

R2#show bgp ?

* All scopes

all All address families

ipv4 Address family

ipv6 Address family

l2vpn Address family

nsap Address family

rtfilter Address family

vpnv4 Address family

vpnv6 Address family

vrf VRF scope

R2#show bgp ipv6 ?

multicast Address Family modifier

mvpn Address Family modifier

unicast Address Family modifier

R2#show bgp ipv6 unicast ?

X:X:X:X::X/<0-128> IPv6 prefix <network>/<length>

community Display routes matching the communities

community-list Display routes matching the community-list

dampening Display detailed information about dampening

extcommunity-list Display routes matching the extcommunity-list

filter-list Display routes conforming to the filter-list

inconsistency Display all inconsistent paths

inconsistent-as Display only routes with inconsistent origin ASs

injected-paths Display all injected paths

labels Display BGP labels for prefixes

neighbors Detailed information on TCP and BGP neighbor connections

nexthops Nexthop address table

paths Path information

peer-group Display information on peer-groups

pending-prefixes Display prefixes pending deletion

prefix-list Display routes matching the prefix-list

quote-regexp Display routes matching the AS path "regular expression"

regexp Display routes matching the AS path regular expression

replication Display replication status of update-group(s)

rib-failure Display bgp routes that failed to install in the routing

table (RIB)

route-map Display routes matching the route-map

route-server Route server information

rpki Display RPKI Neighbor Cache

summary Summary of BGP neighbor status

update-group Display information on update-groups

update-sources Update source interface table

version Display prefixes with matching version numbers

| Output modifiers

<cr>

R2#show bgp ipv6 unicast neighbors // VERIFY IPv6 BGP PEER

BGP neighbor is 2001:DB8:CAFE:33::1, remote AS 65000, internal link

BGP version 4, remote router ID 3.3.3.3

BGP state = Established, up for 00:10:38

Last read 00:00:53, last write 00:00:16, hold time is 180, keepalive interval is 60 seconds

Neighbor sessions:

1 active, is not multisession capable (disabled)

Neighbor capabilities:

Route refresh: advertised and received(new)

Four-octets ASN Capability: advertised and received

Address family IPv6 Unicast: advertised and received

Enhanced Refresh Capability: advertised and received

Multisession Capability:

Stateful switchover support enabled: NO for session 1

Message statistics:

InQ depth is 0

OutQ depth is 0

Sent Rcvd

Opens: 1 1

Notifications: 0 0

Updates: 3 2

Keepalives: 13 13

Route Refresh: 0 0

Total: 17 16

Default minimum time between advertisement runs is 0 seconds

For address family: IPv6 Unicast

Session: 2001:DB8:CAFE:33::1

BGP table version 4, neighbor version 4/0

Output queue size : 0

Index 3, Advertise bit 1

3 update-group member

NEXT_HOP is always this router for eBGP paths

Slow-peer detection is disabled

Slow-peer split-update-group dynamic is disabled

Sent Rcvd

Prefix activity: ---- ----

Prefixes Current: 2 1 (Consumes 88 bytes)

Prefixes Total: 2 1

Implicit Withdraw: 0 0

Explicit Withdraw: 0 0

Used as bestpath: n/a 1

Used as multipath: n/a 0

Outbound Inbound

Local Policy Denied Prefixes: -------- -------

Bestpath from this peer: 1 n/a

Total: 1 0

Number of NLRIs in the update sent: max 1, min 0

Last detected as dynamic slow peer: never

Dynamic slow peer recovered: never

Refresh Epoch: 1

Last Sent Refresh Start-of-rib: never

Last Sent Refresh End-of-rib: never

Last Received Refresh Start-of-rib: never

Last Received Refresh End-of-rib: never

Sent Rcvd

Refresh activity: ---- ----

Refresh Start-of-RIB 0 0

Refresh End-of-RIB 0 0

Address tracking is enabled, the RIB does have a route to 2001:DB8:CAFE:33::1

Connections established 1; dropped 0

Last reset never

Transport(tcp) path-mtu-discovery is enabled

Graceful-Restart is disabled

Connection state is ESTAB, I/O status: 1, unread input bytes: 0

Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 255

Local host: 2001:DB8:CAFE:22::1, Local port: 59230

Foreign host: 2001:DB8:CAFE:33::1, Foreign port: 179

Connection tableid (VRF): 0

Maximum output segment queue size: 50

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0x33F368):

Timer Starts Wakeups Next

Retrans 15 0 0x0

TimeWait 0 0 0x0

AckHold 14 11 0x0

SendWnd 0 0 0x0

KeepAlive 0 0 0x0

GiveUp 0 0 0x0

PmtuAger 24 23 0x33F57A

DeadWait 0 0 0x0

Linger 0 0 0x0

ProcessQ 0 0 0x0

iss: 4247843150 snduna: 4247843644 sndnxt: 4247843644

irs: 3469059070 rcvnxt: 3469059481

sndwnd: 15891 scale: 0 maxrcvwnd: 16384

rcvwnd: 15974 scale: 0 delrcvwnd: 429

SRTT: 865 ms, RTTO: 1866 ms, RTV: 1001 ms, KRTT: 0 ms

minRTT: 8 ms, maxRTT: 1000 ms, ACK hold: 200 ms

Status Flags: active open

Option Flags: nagle, path mtu capable

IP Precedence value : 6

Datagrams (max data segment is 1440 bytes):

Rcvd: 30 (out of order: 0), with data: 16, total data bytes: 429

Sent: 31 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 31, total data bytes: 1741

Packets received in fast path: 0, fast processed: 0, slow path: 0

fast lock acquisition failures: 0, slow path: 0

TCP Semaphore 0x6AAED7A0 FREE

BGP neighbor is 192.168.1.1, remote AS 65100, external link

BGP version 4, remote router ID 1.1.1.1

BGP state = Established, up for 00:19:55

Last read 00:00:15, last write 00:00:59, hold time is 180, keepalive interval is 60 seconds

Neighbor sessions:

1 active, is not multisession capable (disabled)

Neighbor capabilities:

Route refresh: advertised and received(new)

Four-octets ASN Capability: advertised and received

Address family IPv4 Unicast: advertised and received

Address family IPv6 Unicast: advertised and received

Enhanced Refresh Capability: advertised and received

Multisession Capability:

Stateful switchover support enabled: NO for session 1

Message statistics:

InQ depth is 0

OutQ depth is 0

Sent Rcvd

Opens: 1 1

Notifications: 0 0

Updates: 9 4

Keepalives: 22 24

Route Refresh: 0 0

Total: 34 29

Default minimum time between advertisement runs is 30 seconds

For address family: IPv4 Unicast

Session: 192.168.1.1

BGP table version 6, neighbor version 6/0

Output queue size : 0

Index 2, Advertise bit 0

2 update-group member

Slow-peer detection is disabled

Slow-peer split-update-group dynamic is disabled

Sent Rcvd

Prefix activity: ---- ----

Prefixes Current: 2 1 (Consumes 64 bytes)

Prefixes Total: 2 1

Implicit Withdraw: 0 0

Explicit Withdraw: 0 0

Used as bestpath: n/a 1

Used as multipath: n/a 0

Outbound Inbound

Local Policy Denied Prefixes: -------- -------

Bestpath from this peer: 1 n/a

Invalid Path: 1 n/a

Total: 2 0

Number of NLRIs in the update sent: max 1, min 0

Last detected as dynamic slow peer: never

Dynamic slow peer recovered: never

Refresh Epoch: 1

Last Sent Refresh Start-of-rib: never

Last Sent Refresh End-of-rib: never

Last Received Refresh Start-of-rib: never

Last Received Refresh End-of-rib: never

Sent Rcvd

Refresh activity: ---- ----

Refresh Start-of-RIB 0 0

Refresh End-of-RIB 0 0

For address family: IPv6 Unicast

Session: 192.168.1.1

BGP table version 4, neighbor version 4/0

Output queue size : 0

Index 2, Advertise bit 0

2 update-group member

Outbound path policy configured

Route map for outgoing advertisements is HOPv6

Slow-peer detection is disabled

Slow-peer split-update-group dynamic is disabled

Sent Rcvd

Prefix activity: ---- ----

Prefixes Current: 2 1 (Consumes 88 bytes)

Prefixes Total: 2 1

Implicit Withdraw: 0 0

Explicit Withdraw: 2 0

Used as bestpath: n/a 1

Used as multipath: n/a 0

Outbound Inbound

Local Policy Denied Prefixes: -------- -------

Bestpath from this peer: 1 n/a

Other Policies: 2 n/a

Total: 3 0

Number of NLRIs in the update sent: max 1, min 0

Last detected as dynamic slow peer: never

Dynamic slow peer recovered: never

Refresh Epoch: 1

Last Sent Refresh Start-of-rib: 00:16:47

Last Sent Refresh End-of-rib: 00:16:47

Refresh-Out took 0 seconds

Last Received Refresh Start-of-rib: never

Last Received Refresh End-of-rib: never

Sent Rcvd

Refresh activity: ---- ----

Refresh Start-of-RIB 1 0

Refresh End-of-RIB 1 0

Address tracking is enabled, the RIB does have a route to 192.168.1.1

Connections established 2; dropped 1

Last reset 00:20:03, due to Capability changed of session 1

Transport(tcp) path-mtu-discovery is enabled

Graceful-Restart is disabled

Connection state is ESTAB, I/O status: 1, unread input bytes: 0

Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 1

Local host: 192.168.1.2, Local port: 20972

Foreign host: 192.168.1.1, Foreign port: 179

Connection tableid (VRF): 0

Maximum output segment queue size: 50

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0x341DC8):

Timer Starts Wakeups Next

Retrans 29 0 0x0

TimeWait 0 0 0x0

AckHold 26 23 0x0

SendWnd 0 0 0x0

KeepAlive 0 0 0x0

GiveUp 0 0 0x0

PmtuAger 456 455 0x341DDA

DeadWait 0 0 0x0

Linger 0 0 0x0

ProcessQ 0 0 0x0

iss: 3419991927 snduna: 3419992939 sndnxt: 3419992939

irs: 2818091020 rcvnxt: 2818091739

sndwnd: 15373 scale: 0 maxrcvwnd: 16384

rcvwnd: 15666 scale: 0 delrcvwnd: 718

SRTT: 979 ms, RTTO: 1146 ms, RTV: 167 ms, KRTT: 0 ms

minRTT: 8 ms, maxRTT: 1000 ms, ACK hold: 200 ms

Status Flags: active open

Option Flags: nagle, path mtu capable

IP Precedence value : 6

Datagrams (max data segment is 1460 bytes):

Rcvd: 55 (out of order: 0), with data: 27, total data bytes: 718

Sent: 57 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 30, total data bytes: 1011

Packets received in fast path: 0, fast processed: 0, slow path: 0

fast lock acquisition failures: 0, slow path: 0

TCP Semaphore 0x6A359E8C FREE

R1#show bgp ipv4 ?

mdt Address Family modifier

multicast Address Family modifier

mvpn Address Family modifier

unicast Address Family modifier

R1#show bgp ipv4 unicast ?

A.B.C.D Network in the BGP routing table to display

A.B.C.D/nn IP prefix <network>/<length>, e.g., 35.0.0.0/8

cidr-only Display only routes with non-natural netmasks

community Display routes matching the communities

community-list Display routes matching the community-list

dampening Display detailed information about dampening

extcommunity-list Display routes matching the extcommunity-list

filter-list Display routes conforming to the filter-list

import Display route topology import / export activity

inconsistency Display all inconsistent paths

inconsistent-as Display only routes with inconsistent origin ASs

injected-paths Display all injected paths

labels Display Labels for IPv4 NLRI specific information

neighbors Detailed information on TCP and BGP neighbor connections

nexthops Nexthop address table

oer-paths Display all oer controlled paths

paths Path information

peer-group Display information on peer-groups

pending-prefixes Display prefixes pending deletion

prefix-list Display routes matching the prefix-list

quote-regexp Display routes matching the AS path "regular expression"

regexp Display routes matching the AS path regular expression

replication Display replication status of update-group(s)

rib-failure Display bgp routes that failed to install in the routing

table (RIB)

route-map Display routes matching the route-map

route-server Route server information

rpki Display RPKI Neighbor Cache

summary Summary of BGP neighbor status

template Display peer-policy/peer-session templates

topology Routing topology instance

update-group Display information on update-groups

update-sources Update source interface table

va Display virtual aggregation prefixes

version Display prefixes with matching version numbers

| Output modifiers

<cr>

R1#show bgp ipv4 unicast summary // VERIFY IPv4 BGP PEER

BGP router identifier 1.1.1.1, local AS number 65100

BGP table version is 6, main routing table version 6

3 network entries using 444 bytes of memory

3 path entries using 192 bytes of memory

3/3 BGP path/bestpath attribute entries using 408 bytes of memory

1 BGP AS-PATH entries using 24 bytes of memory

0 BGP route-map cache entries using 0 bytes of memory

0 BGP filter-list cache entries using 0 bytes of memory

BGP using 1068 total bytes of memory

BGP activity 7/1 prefixes, 8/2 paths, scan interval 60 secs

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd

192.168.1.2 4 65000 37 32 6 0 0 00:22:43 2

R1#

R1#show bgp ipv6 unicast summary

BGP router identifier 1.1.1.1, local AS number 65100

BGP table version is 4, main routing table version 4

3 network entries using 516 bytes of memory

3 path entries using 264 bytes of memory

3/3 BGP path/bestpath attribute entries using 408 bytes of memory

1 BGP AS-PATH entries using 24 bytes of memory

0 BGP route-map cache entries using 0 bytes of memory

0 BGP filter-list cache entries using 0 bytes of memory

BGP using 1212 total bytes of memory

BGP activity 7/1 prefixes, 8/2 paths, scan interval 60 secs

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd

192.168.1.2 4 65000 37 32 4 0 0 00:22:47 // NOTICE IPv4 IS USED FOR EBGP TRANSPORT

R2#show bgp ipv4 unicast summary

BGP router identifier 2.2.2.2, local AS number 65000

BGP table version is 6, main routing table version 6

3 network entries using 444 bytes of memory

3 path entries using 192 bytes of memory

3/3 BGP path/bestpath attribute entries using 408 bytes of memory

1 BGP AS-PATH entries using 24 bytes of memory

0 BGP route-map cache entries using 0 bytes of memory

0 BGP filter-list cache entries using 0 bytes of memory

BGP using 1068 total bytes of memory

BGP activity 6/0 prefixes, 7/1 paths, scan interval 60 secs

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd

172.17.3.1 4 65000 24 26 6 0 0 00:18:03 1

192.168.1.1 4 65100 34 38 6 0 0 00:24:06 1

R2#

R2#show bgp ipv6 unicast summary

BGP router identifier 2.2.2.2, local AS number 65000

BGP table version is 4, main routing table version 4

3 network entries using 516 bytes of memory

3 path entries using 264 bytes of memory

3/3 BGP path/bestpath attribute entries using 408 bytes of memory

1 BGP AS-PATH entries using 24 bytes of memory

0 BGP route-map cache entries using 0 bytes of memory

0 BGP filter-list cache entries using 0 bytes of memory

BGP using 1212 total bytes of memory

BGP activity 6/0 prefixes, 7/1 paths, scan interval 60 secs

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd

2001:DB8:CAFE:33::1

4 65000 22 22 4 0 0 00:15:03 1

192.168.1.1 4 65100 34 38 4 0 0 00:24:12

R1#show bgp ipv4 unicast // VIEW IPv4 BGP TABLE

BGP table version is 6, local router ID is 1.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,

x best-external, a additional-path, c RIB-compressed,

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

Network Next Hop Metric LocPrf Weight Path

*> 10.1.0.0/16 0.0.0.0 0 32768 i

*> 172.16.2.0/24 192.168.1.2 0 0 65000 i

*> 172.16.3.0/24 192.168.1.2 0 65000 i

R1#

R1#show ip bgp // SIMILAR COMMAND TO show bgp ipv4 unicast

BGP table version is 6, local router ID is 1.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,

x best-external, a additional-path, c RIB-compressed,

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

Network Next Hop Metric LocPrf Weight Path

*> 10.1.0.0/16 0.0.0.0 0 32768 i

*> 172.16.2.0/24 192.168.1.2 0 0 65000 i

*> 172.16.3.0/24 192.168.1.2 0 65000 i

R1#show bgp ipv6 unicast // VIEW IPv6 BGP TABLE

BGP table version is 4, local router ID is 1.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,

x best-external, a additional-path, c RIB-compressed,

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

Network Next Hop Metric LocPrf Weight Path

*> 2001:DB8:BEEF:1::/64

:: 0 32768 i

*> 2001:DB8:CAFE:2::/64

2001:DB8:FEED:1::2 // NOTICE USING R2 EBGP NEXT HOP

0 0 65000 i

*> 2001:DB8:CAFE:3::/64

2001:DB8:FEED:1::2

0 65000 i

R2#show bgp ipv4 unicast

BGP table version is 6, local router ID is 2.2.2.2

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,

x best-external, a additional-path, c RIB-compressed,

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

Network Next Hop Metric LocPrf Weight Path

*> 10.1.0.0/16 192.168.1.1 0 0 65100 i

*> 172.16.2.0/24 0.0.0.0 0 32768 i

r>i 172.16.3.0/24 172.17.3.1 0 100 0 i // NOTICE r SINCE 172.16.3.0/24 IS LEARNED AND INSTALLING IN THE ROUTING TABLE VIA EIGRP (LOWER AD 90 vs AD 200)

R2#show ip bgp r?

regexp replication rib-failure route-map

route-server rpki rtfilter

R2#show ip bgp rib-failure

Network Next Hop RIB-failure RIB-NH Matches

172.16.3.0/24 172.17.3.1 Higher admin distance n/a

R2#show bgp ipv6 unicast

BGP table version is 4, local router ID is 2.2.2.2

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,

x best-external, a additional-path, c RIB-compressed,

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

Network Next Hop Metric LocPrf Weight Path

*> 2001:DB8:BEEF:1::/64

2001:DB8:FEED:1::1 // NOTICE USING R2 EBGP NEXT HOP

0 0 65100 i

*> 2001:DB8:CAFE:2::/64

:: 0 32768 i

r>i 2001:DB8:CAFE:3::/64

2001:DB8:CAFE:33::1

0 100 0 i

R3#show bgp ipv4 unicast

BGP table version is 4, local router ID is 3.3.3.3

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,

x best-external, a additional-path, c RIB-compressed,

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

Network Next Hop Metric LocPrf Weight Path

*>i 10.1.0.0/16 172.17.2.1 0 100 0 65100 i // R2 NEXT HOP DUE TO next-hop-self

r>i 172.16.2.0/24 172.17.2.1 0 100 0 i

*> 172.16.3.0/24 0.0.0.0 0 32768 i

R3#

R3#show bgp ipv6 unicast

BGP table version is 4, local router ID is 3.3.3.3

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,

x best-external, a additional-path, c RIB-compressed,

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

Network Next Hop Metric LocPrf Weight Path

*>i 2001:DB8:BEEF:1::/64

2001:DB8:CAFE:22::1

0 100 0 65100 i

r>i 2001:DB8:CAFE:2::/64

2001:DB8:CAFE:22::1

0 100 0 i

*> 2001:DB8:CAFE:3::/64

:: 0 32768 i

R1#show ip route

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

+ - replicated route, % - next hop override

Gateway of last resort is not set

10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks

C 10.0.0.0/24 is directly connected, Loopback0

L 10.0.0.1/32 is directly connected, Loopback0

C 10.1.0.0/16 is directly connected, Loopback1

L 10.1.0.1/32 is directly connected, Loopback1

172.16.0.0/24 is subnetted, 2 subnets

B 172.16.2.0 [20/0] via 192.168.1.2, 00:31:23 // EBGP AD 20

B 172.16.3.0 [20/0] via 192.168.1.2, 00:23:18

192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks

C 192.168.1.0/30 is directly connected, Serial2/0

L 192.168.1.1/32 is directly connected, Serial2/0

R1#

R1#show ipv6 route

IPv6 Routing Table - default - 9 entries

Codes: C - Connected, L - Local, S - Static, U - Per-user Static route

B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP

H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea

IS - ISIS summary, D - EIGRP, EX - EIGRP external, ND - ND Default

NDp - ND Prefix, DCE - Destination, NDr - Redirect, O - OSPF Intra

OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2, ON1 - OSPF NSSA ext 1

ON2 - OSPF NSSA ext 2, l - LISP

C 2001:DB8:BEEF:1::/64 [0/0]

via Loopback1, directly connected

L 2001:DB8:BEEF:1::1/128 [0/0]

via Loopback1, receive

C 2001:DB8:BEEF:11::/64 [0/0]

via Loopback0, directly connected

L 2001:DB8:BEEF:11::1/128 [0/0]

via Loopback0, receive

B 2001:DB8:CAFE:2::/64 [20/0] // EBGP AD 20

via FE80::C802:23FF:FE24:0, Serial2/0

B 2001:DB8:CAFE:3::/64 [20/0]

via FE80::C802:23FF:FE24:0, Serial2/0

C 2001:DB8:FEED:1::/64 [0/0]

via Serial2/0, directly connected

L 2001:DB8:FEED:1::1/128 [0/0]

via Serial2/0, receive

L FF00::/8 [0/0]

via Null0, receive

R2#show ip route

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

+ - replicated route, % - next hop override

Gateway of last resort is not set

10.0.0.0/16 is subnetted, 1 subnets

B 10.1.0.0 [20/0] via 192.168.1.1, 00:32:57

172.16.0.0/16 is variably subnetted, 5 subnets, 3 masks

C 172.16.1.0/30 is directly connected, Serial2/1

L 172.16.1.1/32 is directly connected, Serial2/1

C 172.16.2.0/24 is directly connected, Loopback1

L 172.16.2.1/32 is directly connected, Loopback1

D 172.16.3.0/24 [90/2297856] via 172.16.1.2, 00:48:06, Serial2/1 // EIGRP (INTERNAL AD 90) LEARNED ROUTES FROM R3

172.17.0.0/16 is variably subnetted, 3 subnets, 2 masks

C 172.17.2.0/24 is directly connected, Loopback0

L 172.17.2.1/32 is directly connected, Loopback0

D 172.17.3.0/24 [90/2297856] via 172.16.1.2, 00:48:02, Serial2/1

192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks

C 192.168.1.0/30 is directly connected, Serial2/0

L 192.168.1.2/32 is directly connected, Serial2/0

R2#

R2#show ipv6 route

IPv6 Routing Table - default - 12 entries

Codes: C - Connected, L - Local, S - Static, U - Per-user Static route

B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP

H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea

IS - ISIS summary, D - EIGRP, EX - EIGRP external, ND - ND Default

NDp - ND Prefix, DCE - Destination, NDr - Redirect, O - OSPF Intra

OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2, ON1 - OSPF NSSA ext 1

ON2 - OSPF NSSA ext 2, l - LISP

B 2001:DB8:BEEF:1::/64 [20/0]

via FE80::C801:27FF:FE70:0, Serial2/0

C 2001:DB8:CAFE:1::/64 [0/0]

via Serial2/1, directly connected

L 2001:DB8:CAFE:1::1/128 [0/0]

via Serial2/1, receive

C 2001:DB8:CAFE:2::/64 [0/0]

via Loopback1, directly connected

L 2001:DB8:CAFE:2::1/128 [0/0]

via Loopback1, receive

D 2001:DB8:CAFE:3::/64 [90/2297856]

via FE80::C803:1CFF:FE48:0, Serial2/1

C 2001:DB8:CAFE:22::/64 [0/0]

via Loopback0, directly connected

L 2001:DB8:CAFE:22::1/128 [0/0]

via Loopback0, receive

D 2001:DB8:CAFE:33::/64 [90/2297856]

via FE80::C803:1CFF:FE48:0, Serial2/1

C 2001:DB8:FEED:1::/64 [0/0]

via Serial2/0, directly connected

L 2001:DB8:FEED:1::2/128 [0/0]

via Serial2/0, receive

L FF00::/8 [0/0]

via Null0, receive

R3#show ip route

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

+ - replicated route, % - next hop override

Gateway of last resort is not set

10.0.0.0/16 is subnetted, 1 subnets

B 10.1.0.0 [200/0] via 172.17.2.1, 00:28:14 // IBGP (AD 200) LEARNED ROUTE FROM R2

172.16.0.0/16 is variably subnetted, 5 subnets, 3 masks

C 172.16.1.0/30 is directly connected, Serial2/1

L 172.16.1.2/32 is directly connected, Serial2/1

D 172.16.2.0/24 [90/2297856] via 172.16.1.1, 00:49:25, Serial2/1 // EIGRP (AD 90) LEARNED ROUTE FROM R2

C 172.16.3.0/24 is directly connected, Loopback1

L 172.16.3.1/32 is directly connected, Loopback1

172.17.0.0/16 is variably subnetted, 3 subnets, 2 masks

D 172.17.2.0/24 [90/2297856] via 172.16.1.1, 00:49:25, Serial2/1

C 172.17.3.0/24 is directly connected, Loopback0

L 172.17.3.1/32 is directly connected, Loopback0

R3#

R3#show ipv6 route

IPv6 Routing Table - default - 10 entries

Codes: C - Connected, L - Local, S - Static, U - Per-user Static route

B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP

H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea

IS - ISIS summary, D - EIGRP, EX - EIGRP external, ND - ND Default

NDp - ND Prefix, DCE - Destination, NDr - Redirect, O - OSPF Intra

OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2, ON1 - OSPF NSSA ext 1

ON2 - OSPF NSSA ext 2, l - LISP

B 2001:DB8:BEEF:1::/64 [200/0] // IBGP (AD 200) LEARNED ROUTE FROM R2

via 2001:DB8:CAFE:22::1

C 2001:DB8:CAFE:1::/64 [0/0]

via Serial2/1, directly connected

L 2001:DB8:CAFE:1::2/128 [0/0]

via Serial2/1, receive

D 2001:DB8:CAFE:2::/64 [90/2297856] // EIGRP (AD 90) LEARNED ROUTE

via FE80::C802:23FF:FE24:0, Serial2/1

C 2001:DB8:CAFE:3::/64 [0/0]

via Loopback1, directly connected

L 2001:DB8:CAFE:3::1/128 [0/0]

via Loopback1, receive

D 2001:DB8:CAFE:22::/64 [90/2297856]

via FE80::C802:23FF:FE24:0, Serial2/1

C 2001:DB8:CAFE:33::/64 [0/0]

via Loopback0, directly connected

L 2001:DB8:CAFE:33::1/128 [0/0]

via Loopback0, receive

L FF00::/8 [0/0]

via Null0, receive

R3#ping 10.1.0.1 source 172.16.3.1 // VERIFY IPv4 CONNECTIIVTY TO R1 (ISP)

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.1.0.1, timeout is 2 seconds:

Packet sent with a source address of 172.16.3.1

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 16/35/64 ms

R3#

R3#ping 2001:db8:beef:1::1 source loop 1 // VERIFY IPv6 CONNECTIIVTY TO R1 (ISP)

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 2001:DB8:BEEF:1::1, timeout is 2 seconds:

Packet sent with a source address of 2001:DB8:CAFE:3::1

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 36/40/48 ms

My Network Lab

Saturday, July 13, 2019

Configuring Multiprotocol BGP (MP-BGP)

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