Friday, November 9, 2018

Configuring OSPFv3 IPv4 and IPv6 Address Families

The traditional approach to OSPFv3 configuration involves creating an OSPF routing process, going into the interfaces that you want to participate in the OSPF process, and instructing those interfaces to be part of that process.

The steps required to configure OSPFv3 using the traditional approach are as follows:

Step 1: Enable IPv6 unicast routing on the router (if it is not already enabled). This can be accomplished with the ipv6 unicast-routing global configuration mode command. Although not required, a best practice is to also enable Cisco Express Forwarding (CEF) for IPv6, using the ipv6 cef command, because CEF enables the router to make more efficient route lookups.

Step 2: Start the OSPF process with the ipv6 router ospf <process-id> command, issued in global configuration mode.

Step 3: (Optional) Configure a router ID for the OSPF process with the router-id <rid> command, where the rid is a 32-bit value, in router configuration mode. This router ID is commonly an IPv4 address of one of the router’s interfaces. If you do not statically configure a router ID, the router attempts to dynamically determine a router ID to use based on currently active IPv4 addresses on the router. However, if you do not set a router ID, and no active IPv4 addresses exist on the router, the OSPF process will fail to start.

Step 4: Instruct one or more interfaces to participate in the OSPF routing process by entering the ipv6 ospf <process-id> area <area_number> command in interface configuration mode.

Here's a nice link comparing OSPFv2 and OSPFv3 routing protocol.


R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#interface loop 0
R1(config-if)#
*Jun 30 08:01:55.435: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up
R1(config-if)#ip address 192.168.1.1 255.255.255.0
R1(config-if)#ipv6 address 2001:db8:cafe:1::1/64
R1(config-if)# 
R1(config-if)#interface serial 2/0
R1(config-if)#ip address 192.168.2.1 255.255.255.252
R1(config-if)#ipv6 address 2001:db8:cafe:2::1/64
R1(config-if)#no shut
R1(config-if)#
*Jun 30 08:03:21.803: %LINK-3-UPDOWN: Interface Serial2/0, changed state to up
R1(config-if)#
*Jun 30 08:03:22.815: %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)#
*Jun 30 08:05:12.687: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up
R2(config-if)#ip address 192.168.3.1 255.255.255.0
R2(config-if)#ipv6 address 2001:db8:cafe:3::1/64
R2(config-if)#
R2(config-if)#interface serial 2/0
R2(config-if)#ip address 192.168.2.2 255.255.255.252
R2(config-if)#ipv6 address 2001:db8:cafe:2::2/64
R2(config-if)#no shut
R2(config-if)#
*Jun 30 08:06:18.031: %LINK-3-UPDOWN: Interface Serial2/0, changed state to up
R2(config-if)#
*Jun 30 08:06:19.043: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to up
R2(config-if)#do ping 192.168.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/19/24 ms
R2(config-if)#do ping 2001:db8:cafe:2::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:CAFE:2::1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/13/20 ms
R2(config-if)#
R2(config-if)#interface serial 2/1
R2(config-if)#ip address 192.168.4.1 255.255.255.252
R2(config-if)#ipv6 address 2001:db8:cafe:4::1/64
R2(config-if)#no shut
R2(config-if)#
*Jun 30 08:07:27.279: %LINK-3-UPDOWN: Interface Serial2/1, changed state to up
R2(config-if)#
*Jun 30 08:07:28.291: %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)#
*Jun 30 08:08:12.387: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up
R3(config-if)#ip address 192.168.5.1 255.255.255.0
R3(config-if)#ipv6 address 2001:db8:cafe:5::1/64
R3(config-if)#
R3(config-if)#interface serial 2/1
R3(config-if)#ip address 192.168.4.2 255.255.255.252
R3(config-if)#ipv6 address 2001:db8:cafe:4::2/64
R3(config-if)#no shut
R3(config-if)#
*Jun 30 08:09:13.667: %LINK-3-UPDOWN: Interface Serial2/1, changed state to up
R3(config-if)#
*Jun 30 08:09:14.679: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/1, changed state to up
R3(config-if)#do ping 192.168.4.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.4.1, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 16/41/84 ms
R3(config-if)#
R3(config-if)#do ping 2001:db8:cafe:4::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:CAFE:4::1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/17/24 ms
R3(config-if)#
R3(config-if)#interface serial 2/2
R3(config-if)#ip address 192.168.77.2 255.255.255.0
R3(config-if)#ipv6 address 2001:db8:feed:77::2/64
R3(config-if)#no shut
R3(config-if)#
*Jun 30 08:10:30.327: %LINK-3-UPDOWN: Interface Serial2/2, changed state to up
R3(config-if)#
*Jun 30 08:10:31.339: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to up
R3(config-if)#end
R3#


R4#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R4(config)#interface loop 0
R4(config-if)#
*Jun 30 08:11:28.283: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up
R4(config-if)#ip address 192.168.99.1 255.255.255.0 
R4(config-if)#ipv6 address 2001:db8:99::1/64 
R4(config-if)#
R4(config-if)#interface serial 2/2
R4(config-if)#ip address 192.168.77.1 255.255.255.0
R4(config-if)#ipv6 address 2001:db8:feed:77::1/64
R4(config-if)#no shut
R4(config-if)#
*Jun 30 08:12:55.455: %LINK-3-UPDOWN: Interface Serial2/2, changed state to up
R4(config-if)#
*Jun 30 08:12:56.467: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to up
R4(config-if)#
R4(config-if)#do ping 192.168.77.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.77.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/25/48 ms
R4(config-if)#
R4(config-if)#do ping 2001:db8:feed:77::2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:FEED:77::2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/19/24 ms
R4(config-if)# 
R4(config-if)#ipv6 unicast-routing
R4(config)#ipv6 route 2001:db8:cafe::/48 2001:db8:feed:77::2
R4(config)#ip route 0.0.0.0 0.0.0.0 192.168.77.2
R4(config)#end
R4#


R1#show ip interface brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            unassigned      YES unset  administratively down down   
FastEthernet1/0            unassigned      YES unset  administratively down down   
FastEthernet1/1            unassigned      YES unset  administratively down down   
Serial2/0                  192.168.2.1     YES manual up                    up     
Serial2/1                  unassigned      YES unset  administratively down down   
Serial2/2                  unassigned      YES unset  administratively down down   
Serial2/3                  unassigned      YES unset  administratively down down   
Loopback0                  192.168.1.1     YES manual up                    up     
R1#
R1#show ipv6 interface brief
FastEthernet0/0        [administratively down/down]
    unassigned
FastEthernet1/0        [administratively down/down]
    unassigned
FastEthernet1/1        [administratively down/down]
    unassigned
Serial2/0              [up/up]
    FE80::C801:15FF:FEB0:0
    2001:DB8:CAFE:2::1
Serial2/1              [administratively down/down]
    unassigned
Serial2/2              [administratively down/down]
    unassigned
Serial2/3              [administratively down/down]
    unassigned
Loopback0              [up/up]
    FE80::C801:15FF:FEB0:0
    2001:DB8:CAFE:1::1


R2#show ip interface brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            unassigned      YES unset  administratively down down   
FastEthernet1/0            unassigned      YES unset  administratively down down   
FastEthernet1/1            unassigned      YES unset  administratively down down   
Serial2/0                  192.168.2.2     YES manual up                    up     
Serial2/1                  192.168.4.1     YES manual up                    up     
Serial2/2                  unassigned      YES unset  administratively down down   
Serial2/3                  unassigned      YES unset  administratively down down   
Loopback0                  192.168.3.1     YES manual up                    up     
R2#
R2#show ipv6 interface brief
FastEthernet0/0        [administratively down/down]
    unassigned
FastEthernet1/0        [administratively down/down]
    unassigned
FastEthernet1/1        [administratively down/down]
    unassigned
Serial2/0              [up/up]
    FE80::C802:16FF:FECC:0
    2001:DB8:CAFE:2::2
Serial2/1              [up/up]
    FE80::C802:16FF:FECC:0
    2001:DB8:CAFE:4::1
Serial2/2              [administratively down/down]
    unassigned
Serial2/3              [administratively down/down]
    unassigned
Loopback0              [up/up]
    FE80::C802:16FF:FECC:0
    2001:DB8:CAFE:3::1


R3#show ip interface brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            unassigned      YES unset  administratively down down   
FastEthernet1/0            unassigned      YES unset  administratively down down   
FastEthernet1/1            unassigned      YES unset  administratively down down   
Serial2/0                  unassigned      YES unset  administratively down down   
Serial2/1                  192.168.4.2     YES manual up                    up     
Serial2/2                  192.168.77.2    YES manual up                    up     
Serial2/3                  unassigned      YES unset  administratively down down   
Loopback0                  192.168.5.1     YES manual up                    up     
R3#
R3#show ipv6 interface brief
FastEthernet0/0        [administratively down/down]
    unassigned
FastEthernet1/0        [administratively down/down]
    unassigned
FastEthernet1/1        [administratively down/down]
    unassigned
Serial2/0              [administratively down/down]
    unassigned
Serial2/1              [up/up]
    FE80::C803:1BFF:FE10:0
    2001:DB8:CAFE:4::2
Serial2/2              [up/up]
    FE80::C803:1BFF:FE10:0
    2001:DB8:FEED:77::2
Serial2/3              [administratively down/down]
    unassigned
Loopback0              [up/up]
    FE80::C803:1BFF:FE10:0
    2001:DB8:CAFE:5::1


R4#show ip interface brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            unassigned      YES unset  administratively down down   
FastEthernet1/0            unassigned      YES unset  administratively down down   
FastEthernet1/1            unassigned      YES unset  administratively down down   
Serial2/0                  unassigned      YES unset  administratively down down   
Serial2/1                  unassigned      YES unset  administratively down down   
Serial2/2                  192.168.77.1    YES manual up                    up     
Serial2/3                  unassigned      YES unset  administratively down down   
Loopback0                  192.168.99.1    YES manual up                    up     
R4#
R4#show ipv6 interface brief
FastEthernet0/0        [administratively down/down]
    unassigned
FastEthernet1/0        [administratively down/down]
    unassigned
FastEthernet1/1        [administratively down/down]
    unassigned
Serial2/0              [administratively down/down]
    unassigned
Serial2/1              [administratively down/down]
    unassigned
Serial2/2              [up/up]
    FE80::C804:10FF:FE70:0
    2001:DB8:FEED:77::1
Serial2/3              [administratively down/down]
    unassigned
Loopback0              [up/up]
    FE80::C804:10FF:FE70:0
    2001:DB8:99::1


R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#ipv6 unicast-routing
R3(config)#router o? 
odr  ospf  ospfv3 

R3(config)#router ospfv3 ?
  <1-65535>  Process ID

R3(config)#router ospfv3 1     // OSPFv3 UNIFIES IPv4 AND IPv6 CONFIG USING ADDRESS FAMILY INSTANCES
R3(config-router)#?
Router configuration commands:
  address-family         Enter Address Family command mode
  area                   OSPF area parameters
  auto-cost              Calculate OSPF interface cost according to bandwidth
  bfd                    BFD configuration commands
  compatible             Compatibility list
  default                Set a command to its defaults
  event-log              Event Logging
  exit                   Exit from routing protocol configuration mode
  graceful-restart       Graceful-restart options
  help                   Description of the interactive help system
  interface-id           Source of the interface ID
  log-adjacency-changes  Log changes in adjacency state
  manet                  Specify MANET OSPF parameters
  max-lsa                Maximum number of non self-generated LSAs to accept
  max-metric             Set maximum metric
  no                     Negate a command or set its defaults
  passive-interface      Suppress routing updates on an interface
  queue-depth            Hello/Router process queue depth
  router-id              router-id for this OSPF process
  timers                 Adjust routing timers

R3(config-router)#address-family ?
  ipv4  Address family
  ipv6  Address family

R3(config-router)#address-family ipv4 ?
  unicast  Address Family modifier

R3(config-router)#address-family ipv4 unicast      // IPv4 ADDRESS-FAMILY
R3(config-router-af)#?
Router Address Family configuration commands:
  area                   OSPF area parameters
  auto-cost              Calculate OSPF interface cost according to bandwidth
  bfd                    BFD configuration commands
  compatible             Compatibility list
  default                Set a command to its defaults
  default-information    Control distribution of default information
  default-metric         Set metric of redistributed routes
  discard-route          Enable or disable discard-route installation
  distance               Define an administrative distance
  distribute-list        Filter networks in routing updates
  event-log              Event Logging
  exit-address-family    Exit from Address Family configuration mode
  graceful-restart       Graceful-restart options
  help                   Description of the interactive help system
  interface-id           Source of the interface ID
  log-adjacency-changes  Log changes in adjacency state
  manet                  Specify MANET OSPF parameters
  max-lsa                Maximum number of non self-generated LSAs to accept
  max-metric             Set maximum metric
  maximum-paths          Forward packets over multiple paths
  no                     Negate a command or set its defaults
  passive-interface      Suppress routing updates on an interface
  queue-depth            Hello/Router process queue depth
  redistribute           Redistribute information from another routing protocol
  router-id              router-id for this OSPF process
  snmp                   Modify snmp parameters
  summary-prefix         Configure IP address summaries
  timers                 Adjust routing timers

R3(config-router-af)#router-id 3.3.3.3
R3(config-router-af)#passive-interface loop 0
R3(config-router-af)#exit-address-family
R3(config-router)#address-family ipv6 unicast     // IPv6 ADDRESS-FAMILY
R3(config-router-af)#?
Router Address Family configuration commands:
  area                   OSPF area parameters
  auto-cost              Calculate OSPF interface cost according to bandwidth
  bfd                    BFD configuration commands
  compatible             Compatibility list
  default                Set a command to its defaults
  default-information    Distribution of default information
  default-metric         Set metric of redistributed routes
  discard-route          Enable or disable discard-route installation
  distance               Administrative distance
  distribute-list        Filter networks in routing updates
  event-log              Event Logging
  exit-address-family    Exit from Address Family configuration mode
  graceful-restart       Graceful-restart options
  help                   Description of the interactive help system
  interface-id           Source of the interface ID
  log-adjacency-changes  Log changes in adjacency state
  manet                  Specify MANET OSPF parameters
  max-lsa                Maximum number of non self-generated LSAs to accept
  max-metric             Set maximum metric
  maximum-paths          Forward packets over multiple paths
  no                     Negate a command or set its defaults
  passive-interface      Suppress routing updates on an interface
  queue-depth            Hello/Router process queue depth
  redistribute           Redistribute IPv6 prefixes from another routing
                         protocol
  router-id              router-id for this OSPF process
  snmp                   Modify snmp parameters
  summary-prefix         Configure IPv6 summary prefix
  table-map              Map external entry attributes into routing table
  timers                 Adjust routing timers

R3(config-router-af)#router-id 3.3.3.6    // ROUTER-ID FOR IPv6 AF DON'T HAVE TO MATCH IPv4
R3(config-router-af)#passive-interface loop 0
R3(config-router-af)#exit
R3(config-router)#exit
R3(config)#interface loop 0
R3(config-if)#o?
ospfv3 

R3(config-if)#ospfv3 ?
  <1-65535>            Process ID
  authentication       Enable authentication
  cost                 Route cost of this interface
  database-filter      Filter OSPF LSA during synchronization and flooding
  dead-interval        Interval after which a neighbor is declared dead
  demand-circuit       OSPF demand circuit
  encryption           Enable encryption
  flood-reduction      OSPF Flood Reduction
  hello-interval       Time between HELLO packets
  manet                Mobile Adhoc Networking options
  mtu-ignore           Ignores the MTU in DBD packets
  neighbor             OSPF neighbor
  network              Network type
  priority             Router priority
  retransmit-interval  Time between retransmitting lost link state
                       advertisements
  transmit-delay       Link state transmit delay

R3(config-if)#ospfv3 1 ?
  cost                 Route cost of this interface
  database-filter      Filter OSPF LSA during synchronization and flooding
  dead-interval        Interval after which a neighbor is declared dead
  demand-circuit       OSPF demand circuit
  flood-reduction      OSPF Flood Reduction
  hello-interval       Time between HELLO packets
  ipv4                 Specify parameters for IPv4
  ipv6                 Specify parameters for IPv6
  manet                Mobile Adhoc Networking options
  mtu-ignore           Ignores the MTU in DBD packets
  neighbor             OSPF neighbor
  network              Network type
  priority             Router priority
  retransmit-interval  Time between retransmitting lost link state
                       advertisements
  transmit-delay       Link state transmit delay

R3(config-if)#ospfv3 1 ipv4 ?
  area                 Set the OSPF area ID
  cost                 Route cost of this interface
  database-filter      Filter OSPF LSA during synchronization and flooding
  dead-interval        Interval after which a neighbor is declared dead
  demand-circuit       OSPF demand circuit
  flood-reduction      OSPF Flood Reduction
  hello-interval       Time between HELLO packets
  manet                Mobile Adhoc Networking options
  mtu-ignore           Ignores the MTU in DBD packets
  neighbor             OSPF neighbor
  network              Network type
  priority             Router priority
  retransmit-interval  Time between retransmitting lost link state
                       advertisements
  transmit-delay       Link state transmit delay

R3(config-if)#ospfv3 1 ipv4 area ?
  <0-4294967295>  OSPF area ID as a decimal value
  A.B.C.D         OSPF area ID in IP address format

R3(config-if)#ospfv3 1 ipv4 area 0
R3(config-if)#ospfv3 1 ipv6 area 0
R3(config-if)#
R3(config-if)#interface serial 2/1
R3(config-if)#ospfv3 1 ipv4 area 0
R3(config-if)#ospfv3 1 ipv6 area 0
R3(config-if)#end
R3#
*Jun 30 08:25:28.063: %OSPFv3-5-ADJCHG: Process 1, IPv4, Nbr 2.2.2.2 on Serial2/1 from LOADING to FULL, Loading Done
R3#
*Jun 30 08:25:29.823: %OSPFv3-5-ADJCHG: Process 1, IPv6, Nbr 2.2.2.6 on Serial2/1 from LOADING to FULL, Loading Done


R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#ipv6 unicast
R2(config)#router ospfv3 1
R2(config-router)#address-family ipv4 unicast
R2(config-router-af)#router-id 2.2.2.2
R2(config-router-af)#passive-interface loop 0
R2(config-router-af)#exit
R2(config-router)#address-family ipv6 unicast
R2(config-router-af)#router-id 2.2.2.6
R2(config-router-af)#passive-interface loop 0
R2(config-router-af)#exit
R2(config-router)#exit    
R2(config)#interface loop 0
R2(config-if)#ospfv3 1 ipv4 area 0
R2(config-if)#ospfv3 1 ipv6 area 0
R2(config-if)#
R2(config-if)#interface serial 2/1
R2(config-if)#ospfv3 1 ipv4 area 0
R2(config-if)#ospfv3 1 ipv6 area 0
R2(config-if)#
*Jun 30 08:25:27.799: %OSPFv3-5-ADJCHG: Process 1, IPv4, Nbr 3.3.3.3 on Serial2/1 from LOADING to FULL, Loading Done
R2(config-if)#
*Jun 30 08:25:29.567: %OSPFv3-5-ADJCHG: Process 1, IPv6, Nbr 3.3.3.6 on Serial2/1 from LOADING to FULL, Loading Done
R2(config-if)#
R2(config-if)#interface serial 2/0
R2(config-if)#ospfv3 1 ipv4 area 51
R2(config-if)#ospfv3 1 ipv6 area 51
R2(config-if)#end
R2#
*Jun 30 08:29:20.603: %OSPFv3-5-ADJCHG: Process 1, IPv4, Nbr 1.1.1.1 on Serial2/0 from LOADING to FULL, Loading Done
R2#
*Jun 30 08:29:30.227: %OSPFv3-5-ADJCHG: Process 1, IPv6, Nbr 1.1.1.6 on Serial2/0 from LOADING to FULL, Loading Done


R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#ipv6 unicast
R1(config)#router ospfv3 11
R1(config-router)#exit
R1(config)#no router ospfv3 11
R1(config)#router ospfv3 1   
R1(config-router)#address-family ipv4 unicast
R1(config-router-af)#router-id 1.1.1.1
R1(config-router-af)#passive-interface loop 0
R1(config-router-af)#exit
R1(config-router)#address-family ipv6 unicast
R1(config-router-af)#router-id 1.1.1.6         
R1(config-router-af)#passive-interface loop 0  
R1(config-router-af)#exit
R1(config-router)#interface loop 0
R1(config-if)#ospfv3 1 ipv4 area 51
R1(config-if)#ospfv3 1 ipv6 area 51
R1(config-if)#
R1(config-if)#interface serial 2/0
R1(config-if)#ospfv3 1 ipv4 area 51
R1(config-if)#
*Jun 30 08:28:10.399: %OSPFv3-5-ADJCHG: Process 1, IPv4, Nbr 2.2.2.2 on Serial2/0 from LOADING to FULL, Loading Done
R1(config-if)#
R1(config-if)#ospfv3 1 ipv6 area 51
R1(config-if)#
*Jun 30 08:28:20.027: %OSPFv3-5-ADJCHG: Process 1, IPv6, Nbr 2.2.2.6 on Serial2/0 from LOADING to FULL, Loading Done
R1(config-if)#end
R1#


R2#show ip ospf neighbor
R2#
R2#show ipv6 ospf neighbor

            OSPFv3 Router with ID (2.2.2.6) (Process ID 1)

Neighbor ID     Pri   State           Dead Time   Interface ID    Interface
3.3.3.6           0   FULL/  -        00:00:31    7               Serial2/1
1.1.1.6           0   FULL/  -        00:00:31    6               Serial2/0


R2#show ospfv3 ? 
  <1-65535>            Process ID number
  bad-checksum         Packets received with a bad checksum
  border-routers       Border and Boundary Router Information
  database             Database summary
  events               Event log
  flood-list           Link state flood list
  graceful-restart     Graceful restart information
  interface            Interface information
  ipv4                 Address family
  ipv6                 Address family
  max-metric           Max-metric origination information
  neighbor             Neighbor list
  promiscuous          Promiscuously learned/cached information
  request-list         Link state request list
  retransmission-list  Link state retransmission list
  rib                  Routing Information Base (RIB)
  sham-links           Sham link information
  statistic            Statistics
  summary-prefix       Summary-prefix redistribution Information
  timers               Timer lists
  traffic              Traffic statistics
  virtual-links        Virtual link information
  vrf                  VPN Routing/Forwarding instance
  |                    Output modifiers
  <cr>

R2#show ospfv3 neighbor       // CORRECT COMMAND TO VERIFY OSPFv3 NEIGHBOR ADJACENCY

          OSPFv3 1 address-family ipv4 (router-id 2.2.2.2)

Neighbor ID     Pri   State           Dead Time   Interface ID    Interface
3.3.3.3           0   FULL/  -        00:00:39    7               Serial2/1
1.1.1.1           0   FULL/  -        00:00:37    6               Serial2/0

          OSPFv3 1 address-family ipv6 (router-id 2.2.2.6)

Neighbor ID     Pri   State           Dead Time   Interface ID    Interface
3.3.3.6           0   FULL/  -        00:00:36    7               Serial2/1
1.1.1.6           0   FULL/  -        00:00:36    6               Serial2/0


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

      192.168.1.0/32 is subnetted, 1 subnets
O IA     192.168.1.1 [110/128] via 192.168.4.1, 00:04:01, Serial2/1
      192.168.2.0/30 is subnetted, 1 subnets
O IA     192.168.2.0 [110/128] via 192.168.4.1, 00:07:24, Serial2/1
      192.168.3.0/32 is subnetted, 1 subnets
O        192.168.3.1 [110/64] via 192.168.4.1, 00:07:28, Serial2/1
      192.168.4.0/24 is variably subnetted, 2 subnets, 2 masks
C        192.168.4.0/30 is directly connected, Serial2/1
L        192.168.4.2/32 is directly connected, Serial2/1
      192.168.5.0/24 is variably subnetted, 2 subnets, 2 masks
C        192.168.5.0/24 is directly connected, Loopback0
L        192.168.5.1/32 is directly connected, Loopback0
      192.168.77.0/24 is variably subnetted, 2 subnets, 2 masks
C        192.168.77.0/24 is directly connected, Serial2/2
L        192.168.77.2/32 is directly connected, Serial2/2


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
OI  2001:DB8:CAFE:1::1/128 [110/128]
     via FE80::C802:16FF:FECC:0, Serial2/1
OI  2001:DB8:CAFE:2::/64 [110/128]
     via FE80::C802:16FF:FECC:0, Serial2/1
O   2001:DB8:CAFE:3::1/128 [110/64]
     via FE80::C802:16FF:FECC:0, Serial2/1
C   2001:DB8:CAFE:4::/64 [0/0]
     via Serial2/1, directly connected
L   2001:DB8:CAFE:4::2/128 [0/0]
     via Serial2/1, receive
C   2001:DB8:CAFE:5::/64 [0/0]
     via Loopback0, directly connected
L   2001:DB8:CAFE:5::1/128 [0/0]
     via Loopback0, receive
C   2001:DB8:FEED:77::/64 [0/0]
     via Serial2/2, directly connected
L   2001:DB8:FEED:77::2/128 [0/0]
     via Serial2/2, receive
L   FF00::/8 [0/0]
     via Null0, receive


R3#show ip route ospf
R3#
R3#show ip route o?
Hostname or A.B.C.D  odr  ospf  ospfv3

R3#show ip route ospfv3     // COMMAND TO VIEW IPv4 ROUTING TABLE
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

      192.168.1.0/32 is subnetted, 1 subnets
O IA     192.168.1.1 [110/128] via 192.168.4.1, 00:05:49, Serial2/1
      192.168.2.0/30 is subnetted, 1 subnets
O IA     192.168.2.0 [110/128] via 192.168.4.1, 00:09:12, Serial2/1
      192.168.3.0/32 is subnetted, 1 subnets
O        192.168.3.1 [110/64] via 192.168.4.1, 00:09:16, Serial2/1


R3#show ipv6 route ospf
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
OI  2001:DB8:CAFE:1::1/128 [110/128]
     via FE80::C802:16FF:FECC:0, Serial2/1
OI  2001:DB8:CAFE:2::/64 [110/128]
     via FE80::C802:16FF:FECC:0, Serial2/1
O   2001:DB8:CAFE:3::1/128 [110/64]
     via FE80::C802:16FF:FECC:0, Serial2/1


R3#conf t      // PROPAGATE DEFAULT ROUTE IN OSPFv3
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#ip route 0.0.0.0 0.0.0.0 192.168.77.1         
R3(config)#ipv6 route ::/0 2001:db8:feed:77::1
R3(config)#router ospfv3 1
R3(config-router)#address-family ipv4 unicast
R3(config-router-af)#default-information originate
R3(config-router-af)#exit
R3(config-router)#address-family ipv6 unicast 
R3(config-router-af)#default-information originate
R3(config-router-af)#end
R3#
*Jun 30 08:46:32.675: %SYS-5-CONFIG_I: Configured from console by console
R3#show ip route static
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 192.168.77.1 to network 0.0.0.0

S*    0.0.0.0/0 [1/0] via 192.168.77.1


R3#show ip route ospfv3
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 192.168.77.1 to network 0.0.0.0

      192.168.1.0/32 is subnetted, 1 subnets
O IA     192.168.1.1 [110/128] via 192.168.4.1, 00:01:04, Serial2/1
      192.168.2.0/30 is subnetted, 1 subnets
O IA     192.168.2.0 [110/128] via 192.168.4.1, 00:01:04, Serial2/1
      192.168.3.0/32 is subnetted, 1 subnets
O        192.168.3.1 [110/64] via 192.168.4.1, 00:01:04, Serial2/1


R3#show ipv6 route static    
IPv6 Routing Table - default - 11 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
S   ::/0 [1/0]
     via 2001:DB8:FEED:77::1


R3#conf t       // REDISTRIBUTE STATIC ROUTES IN OSPFv3
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#ip route 192.168.99.0 255.255.255.0 192.168.77.1
R3(config)#ipv6 route 2001:db8:99:1::/64 2001:db8:feed:77::1
R3(config)#router ospfv3 1
R3(config-router)#address-family ipv4 unicast
R3(config-router-af)#redistribute static
R3(config-router-af)#exit                      
R3(config-router)#address-family ipv6 unicast
R3(config-router-af)#redistribute static       
R3(config-router-af)#end
R3#


R1#show ip route ospfv3
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 192.168.2.2 to network 0.0.0.0

O*E2  0.0.0.0/0 [110/1] via 192.168.2.2, 00:05:49, Serial2/0
      192.168.3.0/32 is subnetted, 1 subnets
O IA     192.168.3.1 [110/64] via 192.168.2.2, 00:22:53, Serial2/0
      192.168.4.0/30 is subnetted, 1 subnets
O IA     192.168.4.0 [110/128] via 192.168.2.2, 00:22:53, Serial2/0
      192.168.5.0/32 is subnetted, 1 subnets
O IA     192.168.5.1 [110/128] via 192.168.2.2, 00:22:53, Serial2/0
O E2  192.168.99.0/24 [110/20] via 192.168.2.2, 00:00:49, Serial2/0


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 192.168.2.2 to network 0.0.0.0

O*E2  0.0.0.0/0 [110/1] via 192.168.2.2, 00:06:27, Serial2/0
      192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C        192.168.1.0/24 is directly connected, Loopback0
L        192.168.1.1/32 is directly connected, Loopback0
      192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks
C        192.168.2.0/30 is directly connected, Serial2/0
L        192.168.2.1/32 is directly connected, Serial2/0
      192.168.3.0/32 is subnetted, 1 subnets
O IA     192.168.3.1 [110/64] via 192.168.2.2, 00:23:31, Serial2/0
      192.168.4.0/30 is subnetted, 1 subnets
O IA     192.168.4.0 [110/128] via 192.168.2.2, 00:23:31, Serial2/0
      192.168.5.0/32 is subnetted, 1 subnets
O IA     192.168.5.1 [110/128] via 192.168.2.2, 00:23:31, Serial2/0
O E2  192.168.99.0/24 [110/20] via 192.168.2.2, 00:01:27, Serial2/0


R1#show ipv6 route ospf
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
OE2 ::/0 [110/1], tag 1
     via FE80::C802:16FF:FECC:0, Serial2/0
OE2 2001:DB8:99:1::/64 [110/20]
     via FE80::C802:16FF:FECC:0, Serial2/0
OI  2001:DB8:CAFE:3::1/128 [110/64]
     via FE80::C802:16FF:FECC:0, Serial2/0
OI  2001:DB8:CAFE:4::/64 [110/128]
     via FE80::C802:16FF:FECC:0, Serial2/0
OI  2001:DB8:CAFE:5::1/128 [110/128]
     via FE80::C802:16FF:FECC:0, Serial2/0


R1#conf t      // CONFIGURE OSPFv3 STUB AREA; WILL BOUNCE OSPF ADJACENCY
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#router ospfv3 1
R1(config-router)#address-family ipv4 unicast
R1(config-router-af)#area 51 stub
R1(config-router-af)#exit
R1(config-router)#area 51 stub
*Jun 30 09:25:13.559: %OSPFv3-5-ADJCHG: Process 1, IPv4, Nbr 2.2.2.2 on Serial2/0 from FULL to DOWN, Neighbor Down: Adjacency forced to reset
R1(config-router)#address-family ipv6 unicast
R1(config-router-af)#area 51 stub              
R1(config-router-af)#
*Jun 30 09:25:25.483: %OSPFv3-5-ADJCHG: Process 1, IPv6, Nbr 2.2.2.6 on Serial2/0 from FULL to DOWN, Neighbor Down: Adjacency forced to reset
R1(config-router-af)#
*Jun 30 09:26:07.099: %OSPFv3-5-ADJCHG: Process 1, IPv4, Nbr 2.2.2.2 on Serial2/0 from LOADING to FULL, Loading Done
R1(config-router-af)#
*Jun 30 09:26:18.535: %OSPFv3-5-ADJCHG: Process 1, IPv6, Nbr 2.2.2.6 on Serial2/0 from LOADING to FULL, Loading Done


R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#router ospfv3 1
R2(config-router)#
*Jun 30 09:26:59.955: %OSPFv3-5-ADJCHG: Process 1, IPv4, Nbr 1.1.1.1 on Serial2/0 from FULL to DOWN, Neighbor Down: Dead timer expired
R2(config-router)#address-family ipv4 unicast
R2(config-router-af)#area 51 stub              
R2(config-router-af)#
*Jun 30 09:27:15.263: %OSPFv3-5-ADJCHG: Process 1, IPv6, Nbr 1.1.1.6 on Serial2/0 from FULL to DOWN, Neighbor Down: Dead timer expired
R2(config-router-af)#
*Jun 30 09:27:17.315: %OSPFv3-5-ADJCHG: Process 1, IPv4, Nbr 1.1.1.1 on Serial2/0 from LOADING to FULL, Loading Done
R2(config-router-af)#
R2(config-router-af)#address-family ipv6 unicast
R2(config-router-af)#area 51 stub              
R2(config-router-af)#
*Jun 30 09:27:28.747: %OSPFv3-5-ADJCHG: Process 1, IPv6, Nbr 1.1.1.6 on Serial2/0 from LOADING to FULL, Loading Done



R1#show ospfv3 neighbor

          OSPFv3 1 address-family ipv4 (router-id 1.1.1.1)

Neighbor ID     Pri   State           Dead Time   Interface ID    Interface
2.2.2.2           0   FULL/  -        00:00:33    6               Serial2/0

          OSPFv3 1 address-family ipv6 (router-id 1.1.1.6)

Neighbor ID     Pri   State           Dead Time   Interface ID    Interface
2.2.2.6           0   FULL/  -        00:00:32    6               Serial2/0


R2#show ospfv3 neighbor

          OSPFv3 1 address-family ipv4 (router-id 2.2.2.2)

Neighbor ID     Pri   State           Dead Time   Interface ID    Interface
3.3.3.3           0   FULL/  -        00:00:31    7               Serial2/1
1.1.1.1           0   FULL/  -        00:00:38    6               Serial2/0

          OSPFv3 1 address-family ipv6 (router-id 2.2.2.6)

Neighbor ID     Pri   State           Dead Time   Interface ID    Interface
3.3.3.6           0   FULL/  -        00:00:30    7               Serial2/1
1.1.1.6           0   FULL/  -        00:00:34    6               Serial2/0


R1#show ip route ospfv3
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 192.168.2.2 to network 0.0.0.0

O*IA  0.0.0.0/0 [110/65] via 192.168.2.2, 00:02:56, Serial2/0
      192.168.3.0/32 is subnetted, 1 subnets
O IA     192.168.3.1 [110/64] via 192.168.2.2, 00:02:56, Serial2/0
      192.168.4.0/30 is subnetted, 1 subnets
O IA     192.168.4.0 [110/128] via 192.168.2.2, 00:02:56, Serial2/0
      192.168.5.0/32 is subnetted, 1 subnets
O IA     192.168.5.1 [110/128] via 192.168.2.2, 00:02:56, Serial2/0


R1#show ipv6 route ospf
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
OI  ::/0 [110/65]
     via FE80::C802:16FF:FECC:0, Serial2/0
OI  2001:DB8:CAFE:3::1/128 [110/64]
     via FE80::C802:16FF:FECC:0, Serial2/0
OI  2001:DB8:CAFE:4::/64 [110/128]
     via FE80::C802:16FF:FECC:0, Serial2/0
OI  2001:DB8:CAFE:5::1/128 [110/128]
     via FE80::C802:16FF:FECC:0, Serial2/0


R2#show ospfv3     // VERIFY CONFIGURED OSPF AREA TYPES AND NUMBER OF INTERFACES IN THE AREA
 OSPFv3 1 address-family ipv4
 Router ID 2.2.2.2
 Event-log enabled, Maximum number of events: 1000, Mode: cyclic
 It is an area border router
 Router is not originating router-LSAs with maximum metric
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 2. Checksum Sum 0x012CE5
 Number of areas in this router is 2. 1 normal 1 stub 0 nssa
 Graceful restart helper support enabled
 Reference bandwidth unit is 100 mbps
 RFC1583 compatibility enabled
    Area BACKBONE(0)
        Number of interfaces in this area is 2
        SPF algorithm executed 6 times
        Number of LSA 8. Checksum Sum 0x03898F
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0
    Area 51
        Number of interfaces in this area is 1
        It is a stub area
        Generates stub default route with cost 1
        SPF algorithm executed 6 times
        Number of LSA 10. Checksum Sum 0x047353
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0

 OSPFv3 1 address-family ipv6
 Router ID 2.2.2.6
 Event-log enabled, Maximum number of events: 1000, Mode: cyclic
 It is an area border router
 Router is not originating router-LSAs with maximum metric
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 2. Checksum Sum 0x00CB60
 Number of areas in this router is 2. 1 normal 1 stub 0 nssa
 Graceful restart helper support enabled
 Reference bandwidth unit is 100 mbps
 RFC1583 compatibility enabled
    Area BACKBONE(0)
        Number of interfaces in this area is 2
        SPF algorithm executed 6 times
        Number of LSA 8. Checksum Sum 0x03EEFB
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0
    Area 51
        Number of interfaces in this area is 1
        It is a stub area
        Generates stub default route with cost 1
        SPF algorithm executed 6 times
        Number of LSA 10. Checksum Sum 0x04C02A
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0


R2#show ospfv3 ?
  <1-65535>            Process ID number
  bad-checksum         Packets received with a bad checksum
  border-routers       Border and Boundary Router Information
  database             Database summary
  events               Event log
  flood-list           Link state flood list
  graceful-restart     Graceful restart information
  interface            Interface information
  ipv4                 Address family
  ipv6                 Address family
  max-metric           Max-metric origination information
  neighbor             Neighbor list
  promiscuous          Promiscuously learned/cached information
  request-list         Link state request list
  retransmission-list  Link state retransmission list
  rib                  Routing Information Base (RIB)
  sham-links           Sham link information
  statistic            Statistics
  summary-prefix       Summary-prefix redistribution Information
  timers               Timer lists
  traffic              Traffic statistics
  virtual-links        Virtual link information
  vrf                  VPN Routing/Forwarding instance
  |                    Output modifiers
  <cr>

R2#show ospfv3 database

          OSPFv3 1 address-family ipv4 (router-id 2.2.2.2)

                Router Link States (Area 0)

ADV Router       Age         Seq#        Fragment ID  Link count  Bits
 2.2.2.2         323         0x80000005  0            1           B
 3.3.3.3         1068        0x80000004  0            1           E

                Inter Area Prefix Link States (Area 0)

ADV Router       Age         Seq#        Prefix
 2.2.2.2         323         0x80000003  192.168.2.0/30
 2.2.2.2         530         0x80000001  192.168.1.1/32

                Link (Type-8) Link States (Area 0)

ADV Router       Age         Seq#        Link ID    Interface
 2.2.2.2         323         0x80000003  7          Se2/1
 3.3.3.3         806         0x80000003  7          Se2/1

                Intra Area Prefix Link States (Area 0)

ADV Router       Age         Seq#        Link ID    Ref-lstype  Ref-LSID
 2.2.2.2         323         0x80000004  0          0x2001      0
 3.3.3.3         806         0x80000004  0          0x2001      0

                Router Link States (Area 51)

ADV Router       Age         Seq#        Fragment ID  Link count  Bits
 1.1.1.1         535         0x80000005  0            1           None
 2.2.2.2         69          0x80000006  0            1           B

                Inter Area Prefix Link States (Area 51)

ADV Router       Age         Seq#        Prefix
 2.2.2.2         323         0x80000003  192.168.3.1/32
 2.2.2.2         323         0x80000003  192.168.4.0/30
 2.2.2.2         323         0x80000003  192.168.5.1/32
 2.2.2.2         540         0x80000001  0.0.0.0/0

                Link (Type-8) Link States (Area 51)

ADV Router       Age         Seq#        Link ID    Interface
 1.1.1.1         589         0x80000003  6          Se2/0
 2.2.2.2         323         0x80000004  6          Se2/0
         
                Intra Area Prefix Link States (Area 51)

ADV Router       Age         Seq#        Link ID    Ref-lstype  Ref-LSID
 1.1.1.1         51          0x80000004  0          0x2001      0
 2.2.2.2         323         0x80000003  0          0x2001      0

                Type-5 AS External Link States

ADV Router       Age         Seq#        Prefix
 3.3.3.3         1068        0x80000002  0.0.0.0/0
 3.3.3.3         806         0x80000002  192.168.99.0/24

          OSPFv3 1 address-family ipv6 (router-id 2.2.2.6)

                Router Link States (Area 0)

ADV Router       Age         Seq#        Fragment ID  Link count  Bits
 2.2.2.6         276         0x80000005  0            1           B
 3.3.3.6         270         0x80000005  0            1           E

                Inter Area Prefix Link States (Area 0)

ADV Router       Age         Seq#        Prefix
 2.2.2.6         276         0x80000003  2001:DB8:CAFE:2::/64
 2.2.2.6         515         0x80000001  2001:DB8:CAFE:1::1/128

                Link (Type-8) Link States (Area 0)

ADV Router       Age         Seq#        Link ID    Interface
 2.2.2.6         276         0x80000003  7          Se2/1
 3.3.3.6         525         0x80000003  7          Se2/1

                Intra Area Prefix Link States (Area 0)

ADV Router       Age         Seq#        Link ID    Ref-lstype  Ref-LSID
 2.2.2.6         276         0x80000004  0          0x2001      0
 3.3.3.6         525         0x80000004  0          0x2001      0

                Router Link States (Area 51)

ADV Router       Age         Seq#        Fragment ID  Link count  Bits
 1.1.1.6         524         0x80000005  0            1           None
 2.2.2.6         15          0x80000006  0            1           B

                Inter Area Prefix Link States (Area 51)
         
ADV Router       Age         Seq#        Prefix
 2.2.2.6         276         0x80000003  2001:DB8:CAFE:3::1/128
 2.2.2.6         276         0x80000003  2001:DB8:CAFE:4::/64
 2.2.2.6         276         0x80000003  2001:DB8:CAFE:5::1/128
 2.2.2.6         525         0x80000001  ::/0

                Link (Type-8) Link States (Area 51)

ADV Router       Age         Seq#        Link ID    Interface
 1.1.1.6         577         0x80000003  6          Se2/0
 2.2.2.6         276         0x80000004  6          Se2/0

                Intra Area Prefix Link States (Area 51)

ADV Router       Age         Seq#        Link ID    Ref-lstype  Ref-LSID
 1.1.1.6         52          0x80000004  0          0x2001      0
 2.2.2.6         276         0x80000003  0          0x2001      0

                Type-5 AS External Link States

ADV Router       Age         Seq#        Prefix
 3.3.3.6         1034        0x80000002  ::/0
 3.3.3.6         777         0x80000002  2001:DB8:99:1::/64


R2#conf t      // CONFIGURE OSPFv3 TOTALLY STUBBY AREA
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#router ospfv3 1
R2(config-router)#address-family ipv4 unicast
R2(config-router-af)#area 51 stub no-summary    
R2(config-router-af)#
R2(config-router-af)#address-family ipv6 unicast
R2(config-router-af)#area 51 stub no-summary   
R2(config-router-af)#end
R2#


R1#show ip route ospfv3     // ONLY ALLOWS DEFAULT ROUTE INJECTED BY ABR; NO INTER-AREA ROUTES
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 192.168.2.2 to network 0.0.0.0

O*IA  0.0.0.0/0 [110/65] via 192.168.2.2, 00:10:54, Serial2/0
R1#
R1#show ipv6 route ospf
IPv6 Routing Table - default - 6 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
OI  ::/0 [110/65]
     via FE80::C802:16FF:FECC:0, Serial2/0


R2#show ospfv3
 OSPFv3 1 address-family ipv4
 Router ID 2.2.2.2
 Event-log enabled, Maximum number of events: 1000, Mode: cyclic
 It is an area border router
 Router is not originating router-LSAs with maximum metric
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 2. Checksum Sum 0x012CE5
 Number of areas in this router is 2. 1 normal 1 stub 0 nssa
 Graceful restart helper support enabled
 Reference bandwidth unit is 100 mbps
 RFC1583 compatibility enabled
    Area BACKBONE(0)
        Number of interfaces in this area is 2
        SPF algorithm executed 7 times
        Number of LSA 8. Checksum Sum 0x03898F
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0
    Area 51
        Number of interfaces in this area is 1
        It is a stub area, no summary LSA in this area
        Generates stub default route with cost 1
        SPF algorithm executed 7 times
        Number of LSA 7. Checksum Sum 0x035C01
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0

 OSPFv3 1 address-family ipv6
 Router ID 2.2.2.6
 Event-log enabled, Maximum number of events: 1000, Mode: cyclic
 It is an area border router
 Router is not originating router-LSAs with maximum metric
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 2. Checksum Sum 0x00CB60
 Number of areas in this router is 2. 1 normal 1 stub 0 nssa
 Graceful restart helper support enabled
 Reference bandwidth unit is 100 mbps
 RFC1583 compatibility enabled
    Area BACKBONE(0)
        Number of interfaces in this area is 2
        SPF algorithm executed 7 times
        Number of LSA 8. Checksum Sum 0x03EEFB
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0
    Area 51
        Number of interfaces in this area is 1
        It is a stub area, no summary LSA in this area
        Generates stub default route with cost 1
        SPF algorithm executed 7 times
        Number of LSA 7. Checksum Sum 0x02B8AA
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0


R2#show ip protocol
*** IP Routing is NSF aware ***

Routing Protocol is "ospfv3 1"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Router ID 2.2.2.2
  Area border router
  Number of areas: 1 normal, 1 stub, 0 nssa
  Interfaces (Area 0):
    Loopback0
    Serial2/1
  Interfaces (Area 51):
    Serial2/0
  Maximum path: 4
  Routing Information Sources:
    Gateway         Distance      Last Update
    1.1.1.1              110      00:03:24
    3.3.3.3              110      00:03:24
  Distance: (default is 110)

R2#
R2#show ipv6 protocols
IPv6 Routing Protocol is "connected"
IPv6 Routing Protocol is "ND"
IPv6 Routing Protocol is "ospf 1"
  Router ID 2.2.2.6
  Area border router
  Number of areas: 1 normal, 1 stub, 0 nssa
  Interfaces (Area 0):
    Loopback0
    Serial2/1
  Interfaces (Area 51):
    Serial2/0
  Redistribution:
    None
R2#


R2#show ospfv3 interface loop 0      // VERIFY OSPF INTERFACE PARAMETERS FOR IPv4 AND IPv6
Loopback0 is up, line protocol is up
  Link Local Address FE80::C802:16FF:FECC:0, Interface ID 11
  Internet Address 192.168.3.1/24
  Area 0, Process ID 1, Instance ID 64, Router ID 2.2.2.2
  Network Type LOOPBACK, Cost: 1
  Loopback interface is treated as a stub Host
Loopback0 is up, line protocol is up
  Link Local Address FE80::C802:16FF:FECC:0, Interface ID 11
  Area 0, Process ID 1, Instance ID 0, Router ID 2.2.2.6
  Network Type LOOPBACK, Cost: 1
  Loopback interface is treated as a stub Host

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