Here's a link to configure Link Bundling or a Bundle-Ether interface in a Cisco NCS 540 router.
You first create a Bundle-Ether (BE) interface and then logically bundle ports.
RP/0/RP0/CPU0:NCS540#configure terminal
RP/0/RP0/CPU0:NCS540(config)#interface ?
BVI Bridge-Group Virtual Interface | short name is BV
Bundle-Ether Aggregated Ethernet interface(s) | short name is BE
Bundle-POS Aggregated POS interface(s) | short name is BP
FastEthernet FastEthernet/IEEE 802.3 interface(s) | short name is Fa
FiftyGigE FiftyGigabitEthernet/IEEE 802.3 interface(s) | short name is Fi
FortyGigE FortyGigabitEthernet/IEEE 802.3 interface(s) | short name is Fo
FourHundredGigE FourHundredGigabitEthernet/IEEE 802.3 interface(s) | short name is FH
GCC0 OTN GCC0 interface(s) | short name is G0
GCC1 OTN GCC1 interface(s) | short name is G1
GCC2 OTN GCC2 interface(s) | short name is G2
GigabitEthernet GigabitEthernet/IEEE 802.3 interface(s) | short name is Gi
HundredGigE HundredGigabitEthernet/IEEE 802.3 interface(s) | short name is Hu
Loopback Loopback interface(s) | short name is Lo
MgmtEth Ethernet/IEEE 802.3 interface(s) | short name is Mg
Multilink Multilink network interface(s) | short name is Ml
Null Null interface | short name is Nu
POS Packet over SONET/SDH network interface(s) | short name is POS
SRP SRP interface(s) | short name is SRP
Serial Serial network interface(s) | short name is Se
TenGigE TenGigabitEthernet/IEEE 802.3 interface(s) | short name is Te
TwentyFiveGigE TwentyFiveGigabitEthernet/IEEE 802.3 interface(s) | short name is TF
TwoHundredGigE TwoHundredGigabitEthernet/IEEE 802.3 interface(s) | short name is TH
preconfigure Specify a preconfig
tunnel-ip GRE/IPinIP Tunnel Interface(s)
tunnel-ipsec IPSec Tunnel interface(s) | short name is tsec
tunnel-mte MPLS Traffic Engineering P2MP Tunnel interface(s) | short name is tmte
tunnel-te MPLS Traffic Engineering Tunnel interface(s) | short name is tt
tunnel-tp MPLS Transport Protocol Tunnel interface | short name is tp
RP/0/RP0/CPU0:NCS540(config)#interface Bundle-Ether ?
<1-65535>
RP/0/RP0/CPU0:NCS540(config)#interface Bundle-Ether 1
RP/0/RP0/CPU0:NCS540(config-if)#?
address-family AFI/SAFI configuration
apply-group Apply configuration from a group
apply-group-append Append apply-group configuration from a group
apply-group-remove Remove a group from apply-group configuration
arp Configure Address Resolution Protocol
auto-ip-ring Auto-IP-Ring interface configuration commands
bandwidth Set the bandwidth of an interface
bfd BFD configuration on a bundle interface
bundle Bundle interface commands
capture capture interface packets (platform)(cisco-support)
clear Clear the uncommitted configuration
commit Commit the configuration changes to running
dampening configure state dampening on the given interface
describe Describe a command without taking real actions
description Set description for this interface
do Run an exec command
dot1q 802.1Q VLAN configuration
end Exit from configure mode
ethernet Ethernet per-interface configuration commands
ethernet-services Ethernet related services
exclude-group Exclude apply-group configuration from a group
exclude-item Negate a command or set its defaults
exit Exit from this submode
flow Netflow configuration
ipv4 IPv4 interface subcommands
ipv6 IPv6 interface subcommands
l2transport Enable Layer 2 transport and enter its configuration submode
lacp Bundle interface LACP commands
lldp LLDP interface configuration commands
load-interval Specify interval for load calculation for an interface
local-proxy-arp Enable local proxy ARP
logging Per-interface logging configuration
mac-accounting Start per MAC address accounting on the interface
mac-address Set the Mac address(xxxx.xxxx.xxxx) on an interface
mlacp Multi-chassis LACP per-interface commands
monitor-session Monitor-session configuration commands
mpls MPLS interface subcommands
mtu Set the MTU on an interface
no Negate a command or set its defaults
proxy-arp Enable proxy ARP
ptp Precision Time Protocol config
pwd Commands used to reach current submode
root Exit to the global configuration mode
service-policy Configure a service policy
show Show contents of configuration
shutdown shutdown the given interface
validate Validate configuration changes without attempting to commit
vrf Set VRF in which the interface operates
RP/0/RP0/CPU0:NCS540(config-if)#
RP/0/RP0/CPU0:NCS540(config-if)#ipv4
address 10.1.1.2 255.255.255.252 // LAYER 3 BE PORT
RP/0/RP0/CPU0:NCS540(config-if)#bundle ?
lacp-delay Set the lacp-delay timeout for members of this bundle
lacp-fallback Set the lacp-fallback for members of this bundle
load-balancing Load balancing commands on a bundle
logging logging events for the members of this bundle
maximum-active Set a limit on the number of links that can be active
minimum-active Set the minimum criteria for the bundle to be active
shutdown Bring all links in the bundle down to Standby state
wait-while Set the wait-while timeout for members of this bundle
RP/0/RP0/CPU0:NCS540(config-if)#bundle minimum-active ?
bandwidth Set the bandwidth (in kbps) needed to bring up this bundle
links Set the number of active links needed to bring up this bundle
RP/0/RP0/CPU0:NCS540(config-if)#bundle minimum-active bandwidth ?
<1-4294967295> Bandwidth needed to bring up this bundle (in kbps)
gbps Set the bandwidth in gbps
kbps Set the bandwidth in kbps
mbps Set the bandwidth in mbps
RP/0/RP0/CPU0:NCS540(config-if)#bundle minimum-active ?
bandwidth Set the bandwidth (in kbps) needed to bring up this bundle
links Set the number of active links needed to bring up this bundle
RP/0/RP0/CPU0:NCS540(config-if)#bundle minimum-active links ?
<1-64> Number of active links needed to bring up this bundle
RP/0/RP0/CPU0:NCS540(config-if)#bundle minimum-active links 2
RP/0/RP0/CPU0:NCS540(config-if)#bundle minimum-active bandwidth 1000000
RP/0/RP0/CPU0:NCS540(config-if)# no shutdown
RP/0/RP0/CPU0:NCS540(config-if)#
RP/0/RP0/CPU0:NCS540(config-if)#do
sh run interface Bundle-Ether 1
Tue Aug 17 07:11:21.234 UTC
% No such configuration item(s) // NEED TO APPLY commit
RP/0/RP0/CPU0:NCS540(config-if)#show config
Tue Aug 17 07:11:41.841 UTC
Building configuration...
!! IOS XR Configuration 7.x
cdp
interface Bundle-Ether1
ipv4 address 10.1.1.2 255.255.255.252
no shutdown
bundle minimum-active bandwidth 1000000
bundle minimum-active links 2
Bundle individual ports to the corresponding BE bundle ID number
RP/0/RP0/CPU0:NCS540(config-if)#interface GigabitEthernet0/0/0/1
RP/0/RP0/CPU0:NCS540(config-if)#bundle ?
id Add the port to an aggregated interface.
port-priority Priority for this port. Lower value is higher priority.
RP/0/RP0/CPU0:NCS540(config-if)#bundle id ?
<1-65535> Identifier of the bundle to add the port to.
RP/0/RP0/CPU0:NCS540(config-if)#bundle id 1 ?
mode Specify the mode of operation.
<cr>
RP/0/RP0/CPU0:NCS540(config-if)#bundle id 1 mode ?
active Run LACP in active mode over the port.
inherit Run LACP as configured in bundle.
on Do not run LACP over the port.
passive Run LACP in passive mode over the port.
RP/0/RP0/CPU0:NCS540(config-if)#bundle id 1 mode active
RP/0/RP0/CPU0:NCS540(config-if)#bundle port-priority 1 // SET THE PRIORITY OF THE ACTIVE LINK
(LOWEST VALUE PREFERRED); Gi0/0/0/1 IS ACTIVE
RP/0/RP0/CPU0:NCS540(config-if)#no shutdown
RP/0/RP0/CPU0:NCS540(config-if)#
RP/0/RP0/CPU0:NCS540(config-if)#interface GigabitEthernet0/0/0/2
RP/0/RP0/CPU0:NCS540(config-if)#bundle id 1 mode active
RP/0/RP0/CPU0:NCS540(config-if)#bundle port-priority 2 // Gi0/0/0/2 IS STANDBY
RP/0/RP0/CPU0:NCS540(config-if)# no shutdown
RP/0/RP0/CPU0:NCS540(config-if)#
RP/0/RP0/CPU0:NCS540(config-if)#commit
Tue Aug 17 07:13:34.975 UTC
RP/0/RP0/CPU0:NCS540(config-if)#
RP/0/RP0/CPU0:NCS540(config-if)#do sh run interface Bundle-Ether 1
Tue Aug 17 07:13:52.194 UTC
interface Bundle-Ether1
ipv4 address 10.1.1.2 255.255.255.252
bundle minimum-active bandwidth 1000000
bundle minimum-active links 2
!
RP/0/RP0/CPU0:NCS540(config-if)#do show run interface GigabitEthernet0/0/0/1
Tue Aug 17 07:14:08.516 UTC
interface GigabitEthernet0/0/0/1
bundle id 1 mode active
bundle port-priority 1
cdp
!
RP/0/RP0/CPU0:NCS540(config-if)#do show run interface GigabitEthernet0/0/0/2
Tue Aug 17 07:14:08.516 UTC
interface GigabitEthernet0/0/0/2
bundle id 1 mode active
bundle port-priority 2
cdp
RP/0/RP0/CPU0:NCS540#show lacp Bundle-Ether 1
Tue Aug 17 07:15:12.384 UTC
State: a - Port is marked as Aggregatable.
s - Port is Synchronized with peer.
c - Port is marked as Collecting.
d - Port is marked as Distributing.
A - Device is in Active mode.
F - Device requests PDUs from the peer at fast rate.
D - Port is using default values for partner information.
E - Information about partner has expired.
Bundle-Ether1
Port (rate) State Port ID Key System ID
-------------------- -------- ------------- ------ ------------------------
Local
Gi0/0/0/1 30s ascdA--- 0x8000,0x0001 0x0001 0x8000,b0-a6-51-35-34-12
Partner 30s ascdA--- 0x8000,0x0007 0x0001 0x8000,74-26-ac-f3-db-34
Gi0/0/0/2 30s ascdA--- 0x8000,0x0001 0x0001 0x8000,b0-a6-51-35-34-ab
Partner 30s ascdA--- 0x8000,0x0007 0x0001 0x8000,74-26-ac-f3-db-cd
Port Receive Period Selection Mux A Churn P Churn
-------------------- ---------- ------ ---------- --------- ------- -------
Local
Gi0/0/0/1 Current Slow Selected Distrib None None
Gi0/0/0/2 Current Slow Selected Distrib None None
RP/0/RP0/CPU0:NCS540#show bundle ?
Bundle-Ether Aggregated Ethernet interface(s) | short name is BE
Bundle-POS Aggregated POS interface(s) | short name is BP
brief Display a brief output of all configured bundles
consistency Show consistency, inconsistency and programming errors(cisco-support)
infrastructure Show infrastructure information for bundles and members.(cisco-support)
load-balancing Show load-balancing information for bundles and members.
protect Show protect information for bundles.
scheduled-actions Show scheduled actions for bundles
status Check the current status of the bundle subsystem
trace Show trace data for Bundle Manager(cisco-support)
| Output Modifiers
<cr>
RP/0/RP0/CPU0:NCS540#show bundle bundle-ether ?
<1-65535>
RP/0/RP0/CPU0:NCS540#show bundle bundle-ether 1
Sun Aug 22 03:40:28.254 UTC
Bundle-Ether1
Status: Up
Local links <active/standby/configured>: 1 / 1 / 2
Local bandwidth <effective/available>: 1000000 (1000000) kbps
MAC address (source): b0a6.5135.abcd (Chassis pool)
Inter-chassis link: No
Minimum active links / bandwidth: 2 / 1000000 kbps
Maximum active links: 64
Wait while timer: 2000 ms
Load balancing:
Link order signaling: Not configured
Hash type: Default
Locality threshold: None
LACP: Operational
Flap suppression timer: Off
Cisco extensions: Disabled
Non-revertive: Disabled
mLACP: Not configured
IPv4 BFD: Operational
State: Up
Mode: ietf
Fast detect: Enabled
Start timer: Off
Neighbor-unconfigured timer: Off
Preferred min interval: 150 ms
Preferred multiple: 3
Destination address: 10.1.1.1
IPv6 BFD: Not operational
Port Device State Port ID B/W, kbps
-------------------- --------------- ----------- -------------- ----------
Gi0/0/0/1 Local Active 0x8000, 0x0001 1000000
Link is Active
Gi0/0/0/2 Local Active 0x8000, 0x0001 1000000
Link is Active
Here's a link to configure BFD on a Bundle interface in Cisco NCS 540 router. You configure the BFD settings under the Bundle-Ether interface.
Thu Aug 19 02:18:43.587 UTC
RP/0/RP0/CPU0:NCS540(config)#interface Bundle-Ether1
RP/0/RP0/CPU0:NCS540(config-if)#bfd ?
address-family Set configuration for a given address family
mode Standard used for per-member BFD
RP/0/RP0/CPU0:NCS540(config-if)#bfd mode ?
cisco Use Cisco standard for BoB
ietf Use IETF standard for BoB
RP/0/RP0/CPU0:NCS540(config-if)#bfd mode ietf
Thu Aug 19 02:23:03.820 UTC
Please note that existing BFD sessions need to be brought down and re-created for the new mode to take effect.
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ?
ipv4 Set configuration for the IPv4 address family
ipv6 Set configuration for the IPv6 address family
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ipv4 ?
destination Set the destination address for the BFD session
echo Set the configuration for the echo mode of BFD
fast-detect Enable fast detection using BFD on bundle members
minimum-interval Set the preferred minimum interval for the BFD session
multiplier Set the preferred multiplier for the BFD session
timers Set the timers that determine when a BFD session defaults to down
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ipv4 multiplier ?
<2-50> The preferred multiplier for the BFD session
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ipv4 multiplier 3
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ipv4 destination ?
A.B.C.D IPv4 destination address for the BFD session
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ipv4 destination 10.1.1.1
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ipv4 fast-detect ?
<cr>
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ipv4 fast-detect
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ipv4 minimum-interval ?
<3-30000> The preferred minimum interval (in ms) for the BFD session
RP/0/RP0/CPU0:NCS540(config-if)#bfd address-family ipv4 minimum-interval 150
RP/0/RP0/CPU0:NCS540(config-if)#commit
Thu Aug 19 02:20:11.238 UTC
RP/0/RP0/CPU0:NCS540#show run interface Bundle-Ether1
Thu Aug 19 02:21:01.323 UTC
interface Bundle-Ether1
bfd mode ietf
bfd address-family ipv4 multiplier 3
bfd address-family ipv4 destination 10.1.1.2
bfd address-family ipv4 fast-detect
bfd address-family ipv4 minimum-interval 150
RP/0/RP0/CPU0:NCS540#show bfd ?
agent Information directly from Agent(cisco-support)
agents Agents registered with BFD Server(cisco-support)
all Both ipv4 and ipv6 address families
bootstrap Display information about session bootstrap module(cisco-support)
bundles Bundle information(cisco-support)
client Clients registered with BFD Server
counters Counters
gsp BFD process GSP statistics and history(cisco-support)
ha HA Information(cisco-support)
index-mgrs Index manager information(cisco-support)
interfaces Interface state block information(cisco-support)
ipv4 IPv4 Address Family
ipv6 IPv6 Address Family
issu ISSU Information(cisco-support)
label Label
location Specify a location
lpts Display information about LPTS-LRD interactions(cisco-support)
mib MIB related information
multihop Multihop only
multipath Multiple Path Session Information
reflector S-BFD responder(cisco-support)
relation Relationship information of sessions
session Session information
session-array Session array information(cisco-support)
singlehop Singlehop only
statistics Statistics information(cisco-support)
summary Summary Information
target-identifier SBFD Local/Remote target identifier
timer-groups Timer group information(cisco-support)
trace Trace data(cisco-support)
| Output Modifiers
<cr>
RP/0/RP0/CPU0:NCS540#show bfd ipv4 ?
agent Information directly from Agent(cisco-support)
location Specify a location
multihop Multihop only
multipath Multiple Path Session Information
session Session information
singlehop Singlehop only
| Output Modifiers
<cr>
RP/0/RP0/CPU0:NCS540#show bfd ipv4 session
Sun Aug 22 07:14:26.612 UTC
Interface Dest Addr Local det time(int*mult) State
Echo Async H/W NPU
------------------- --------------- ---------------- ---------------- ----------
Gi0/0/0/1 10.1.1.1 0s(0s*0) 450ms(150ms*3) UP
Yes 0/0/CPU0
Gi0/0/0/2 10.1.1.1 0s(0s*0) 450ms(150ms*3) UP
Yes 0/0/CPU0
BE1 10.1.1.1 n/a n/a UP
No n/a
