Course:
CCNP ENARSI Labs
OSPFv3 with the address family (AF) unifies OSPF configuration for both IPv4 and IPv6. Each OSPFv3 AF is a single process, so you may have two processes per interface, but only one process per AF. OSPFv3 messages are sent over IPv6 which requires that IPv6 routing is enabled and that the interface has a link-local IPv6 address. This is the requirement even if only the IPv4 AF is configured.
In this section you will configure OSPFv3 with AF for the IPv4 and IPv6 address families on R1, R2, R3, D1 and D2.
a. After enabling IPv6 unicast routing, configure OSPFv3 with AF on R1 using the router ospfv3 pid command. Use the ? to see the address families available.
Open configuration window
R1(config)# ipv6 unicast-routing R1(config)# router ospfv3 123 R1(config-router)# address-family ? ipv4 Address family ipv6 Address family |
b. Next, specify the AF for IPv4 and use the ? to see the available options.
R1(config-router)# address-family ipv4 ? unicast Address Family modifier vrf Specify parameters for a VPN Routing/Forwarding instance <cr> |
c. Enter the AF for IPv4 unicast using the command address-family ipv4 unicast. Use the ? to examine the options in AF configuration mode. Some of the more common configuration commands are highlighted. Use the router-id command to configure the router ID for the IPv4 AF.
R1(config-router)# address-family ipv4 unicast R1(config-router-af)# ? Router Address Family configuration commands: adjacency Control adjacency formation area OSPF area parameters authentication Authentication parameters auto-cost Calculate OSPF interface cost according to bandwidth auto-cost-determination 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 ignore Do not complain about specific event interface-id Source of the interface ID limit Limit a specific OSPF feature local-rib-criteria Enable or disable usage of local RIB as route criteria 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 mpls MPLS Traffic Engineering configs no Negate a command or set its defaults passive-interface Suppress routing updates on an interface prefix-suppression Enable prefix suppression process-min-time Percentage of quantum to be used before releasing CPU queue-depth Hello/Router process queue depth redistribute Redistribute information from another routing protocol router-id router-id for this OSPF process shutdown Shutdown the router process snmp Modify snmp parameters statistics Enable or disable OSPF statistics options summary-address Configure IP address summaries summary-prefix Configure IP address summaries timers Adjust routing timers R1(config-router-af)# R1(config-router-af)# router-id 1.1.1.1 |
d. Exit the IPv4 AF configuration mode and enter the AF IPv6 configuration mode. The exit-address-family (or a shorter version of exit) command is used exit address family configuration mode. Issue the address-family ipv6 unicast command to enter the IPv6 AF. For the IPv6 AF, use the router-id command to configure the router ID. It isn’t necessary to configure a different router ID for IPv6 AF but it is a valid option. The exit command is used to return to global configuration mode.
R1(config-router-af)# exit-address-family R1(config-router)# address-family ipv6 unicast R1(config-router-af)# router-id 1.1.1.1 R1(config-router-af)# exit-address-family R1(config-router)# exit |
e. OSPFv3 is enabled directly on the interfaces for both IPv4 and IPv6 AFs using the ospfv3 pid [ ipv4 | ipv6 ] area area-id interface command. Use this command to enable OSPFv3 on both of R1’s interfaces.
R1(config)# interface g0/0 R1(config-if)# ospfv3 123 ipv4 area 0 R1(config-if)# ospfv3 123 ipv6 area 0 R1(config-if)# exit R1(config)# interface g0/1 R1(config-if)# ospfv3 123 ipv4 area 1 R1(config-if)# ospfv3 123 ipv6 area 1 |
Close configuration window
Enable IPv6 unicast routing and configure the OSPFv3 with AF for both IPv4 and IPv6 on R2, similar to the configuration for R1.
R2(config)# ipv6 unicast-routing
R2(config)# router ospfv3 123 R2(config-router)# address-family ipv4 unicast R2(config-router-af)# router-id 2.2.2.1 R2(config-router-af)# exit-address-family R2(config-router)# address-family ipv6 unicast R2(config-router-af)# router-id 2.2.2.1 R2(config-router-af)# exit-address-family R2(config-router)# exit
R2(config)# interface g0/0 R2(config-if)# ospfv3 123 ipv4 area 0 R2(config-if)# ospfv3 123 ipv6 area 0 R2(config-if)# exit R2(config)# interface g0/1 R2(config-if)# ospfv3 123 ipv4 area 0 R2(config-if)# ospfv3 123 ipv6 area 0 |
Enable IPv6 unicast routing and configure the OSPFv3 with AF for both IPv4 and IPv6 on R3, similar to the configurations for R1 and R2. On R3, set the router ID for both IPv4 AF and IPv6 AF with a single command as shown.
R3(config)# ipv6 unicast-routing
R3(config)# router ospfv3 123 R3(config-router)# router-id 3.3.3.1 R3(config-router)# address-family ipv4 unicast R3(config-router-af)# exit-address-family R3(config-router)# address-family ipv6 unicast R3(config-router-af)# exit-address-family R3(config-router)# exit
R3(config)# interface g0/1 R3(config-if)# ospfv3 123 ipv4 area 0 R3(config-if)# ospfv3 123 ipv6 area 0 R3(config-if)# exit R3(config)# interface g0/2 R3(config-if)# ospfv3 123 ipv4 area 2 R3(config-if)# ospfv3 123 ipv6 area 2 |
a. Enter the following command to enable routing for IPv4. (This may not be required on depending on model and IOS.)
D2(config)# ip routing |
b. Enter the following command to enable routing for IPv6. (This may not be required on depending on model and IOS.)
D2(config)# ipv6 unicast-routing |
Note: By default, the 3650 supports IPv6 interface configuration.
c. Configure the OSPFv3 with AF for both IPv4 and IPv6 on D2, similar to the configurations for R1, R2 and R3.
D2(config)# router ospfv3 123 D2(config-router)# address-family ipv4 unicast D2(config-router-af)# router-id 3.3.3.2 D2(config-router-af)# exit-address-family D2(config-router)# address-family ipv6 unicast D2(config-router-af)# router-id 3.3.3.2 D2(config-router-af)# exit-address-family D2(config-router)# exit
D2(config)# interface g0/1 D2(config-if)# ospfv3 123 ipv4 area 2 D2(config-if)# ospfv3 123 ipv6 area 2 D2(config-if)# exit D2(config)# interface g 0/3 D2(config-if)# ospfv3 123 ipv4 area 2 D2(config-if)# ospfv3 123 ipv6 area 2 |
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