IPv6 Routing Protocol Configurations

Static Routing

Command	Description
ipv6 route ipv6-prefix/prefix-length {ipv6-address | interface-type interface-number [ipv6-address]} [administrative-distance] [administrative-multicast-distance | unicast | multicast] [tag tag] Example: Router(config)# ipv6 route ::/0 serial 2/0	Configures a static IPv6 route A static default IPv6 route is being configured on a serial interface. See the syntax examples that immediately follow this table for specific uses of the ipv6 route command for configuring static routes.

Summary Steps

1. enable
2. configure terminal
3. ipv6 route ipv6-prefix/prefix-length {ipv6-address | interface-type interface-number

[ipv6-address]} [administrative-distance] [administrative-multicast-distance | unicast | multicast] [tag tag]

RIPng

Command	Description
ipv6 unicast-routing Example: Router(config)# ipv6 unicast-routing	Enables the forwarding of IPv6 unicast datagrams
ipv6 rip name enable Example: Router(config-if)# ipv6 rip process1 enable	Enables the specified IPv6 RIP routing process on an interface
maximum-paths number-paths Example: Router(config-router)# maximum-paths 1	(Optional) Defines the maximum number of equal-cost routes that IPv6 RIP can support The number-paths argument is an integer from 1 to 64. The default for RIP is four paths.
ipv6 router rip word Example: Router(config)# ipv6 router rip process1	Configures an IPv6 RIP routing process and enters router configuration mode for the IPv6 RIP routing process. Use the word argument to identify a specific IPv6 RIP routing process
ipv6 rip name default-information {only \ originate} [metric metric-value] Example: Router(config-if)# ipv6 rip process1 default-information originate	(Optional) Originates the IPv6 default route (::/0) into the specified RIP routing process updates sent out of the specified interface.

Summary Steps

1. enable
2. configure terminal
3. ipv6 router rip word
4. maximum-paths number-paths
5. exit
6. interface type number
7. ipv6 rip name default-information {only | originate} [metric metric-value]

IS-IS

Command	Description
router isis area-tag Example: Router(config)# router isis area2	Enables IS-IS for the specified IS-IS routing process, and enters router configuration mode.
net network-entity-title Example: Router(config-router)# net 49.0001.0000.0000.000c.00	Configures an IS-IS network entity title (NET) for the routing process.
ipv6 router isis area-name Example: Router(config-if)# ipv6 router isis area2	Enables the specified IPv6 IS-IS routing process on an interface. configuration mode

OSPFv3

Command	Description
router ospfv3 [process-id] Example: Router(config)# router ospfv3 1	Enables OSPFv3 router configuration mode for the IPv4 or IPv6 address family
nssa | stub] Example: Router(config-router)# area 1	Configures the OSPFv3 area
auto-cost reference-bandwidth Mbps Example: Router(config-router)# auto-cost reference-bandwidth 1000	Controls the reference value OSPFv3 uses when calculating metrics for interfaces in an IPv4 OSPFv3 process.
bfd all-interfaces Example: Router(config-router)# bfd all-interfaces	Enables BFD for an OSPFv3 routing process
virtual-link router-id]} [default-information originate [always | metric | metric-type | route-map] | distance | distribute-list prefix-list prefix-list-name {in | out} [interface] | maximum-paths paths | redistribute protocol | summary-prefix ipv6-prefix] Example: Router(config-router)# default area 1	Returns an OSPFv3 parameter to its default value
ignore lsa mospf Example: Router(config-router)# ignore lsa mospf	Suppresses the sending of syslog messages when the router receives LSA Type 6 multicast OSPFv3 packets, which are unsupported.
interface-id snmp-if-index Example: Router(config-router)# interface-id snmp-if-index	Configures OSPFv3 interfaces with Simple Network Management Protocol (SNMP) MIB-II interface Index (ifIndex) identification numbers in IPv4 and IPv6.
log-adjacency-changes [detail] Example: Router(config-router)# log-adjacency-changes	Configures the router to send a syslog message when an OSPFv3 neighbor goes up or down.
passive-interface [default \ interface-type interface-number] Example: Router(config-router)# passive-interface default	Suppresses sending routing updates on an interface when using an IPv4 OSPFv3 process.
queue-depth {hello \ update} {queue-size \ unlimited} Example: Router(config-router)# queue-depth update 1500	Configures the number of incoming packets that the IPv4 OSPFv3 process can keep in its queue.

Summary Steps:

1. enable

2. configure terminal

3. router ospfv3 [process-id]

4. area area-ID [default-cost | nssa | stub]

5. auto-cost reference-bandwidth Mbps

6. bfd all-interfaces

7. default {area area-ID [range ipv6-prefix | virtual-link router-id]} [default-information originate [always | metric | metric-type | route-map] | distance | distribute-list prefix-list prefix-list-name {in | out} [interface] | maximum-paths paths | redistribute protocol | summary-prefix ipv6-prefix]

8. ignore lsa mospf

9. interface-id snmp-if-index

10. log-adjacency-changes [detail]

11. passive-interface [default | interface-type interface-number]

12. queue-depth {hello | update} {queue-size | unlimited}

13. router-id {router-id}

EIGRP

Command	Description
ipv6 unicast-routing Example: Router(config)# ipv6 unicast-routing	Enables the forwarding of IPv6 unicast datagrams
ipv6 eigrp as-number Example: Router(config-if)# ipv6 eigrp 1	Enables EIGRP for IPv6 on a specified interface
ipv6 router eigrp as-number Example: Router(config-if)# ipv6 router eigrp 1	Enters router configuration mode and creates an EIGRP IPv6 routing process
show ipv6 eigrp [as-number] interfaces [type number] [detail] Example: Router# show ipv6 eigrp interfaces	Displays information about interfaces configured for EIGRP for IPv6.

Summary Steps

1. enable
2. configure terminal
3. ipv6 unicast-routing
4. interface type number
5. no shut
6. ipv6 enable
7. ipv6 eigrp as-number
8. ipv6 router eigrp as-number
9. eigrp router-id ip-address
10. exit
11. show ipv6 eigrp [as-number] interfaces [type number] [detail]

Troubleshooting IPv6

Command	Description
clear ipv6 rip	Deletes routes from the IPv6 RIP routing table and, if installed, routes in the IPv6 routing table
clear ipv6 route *	Deletes all routes from the IPv6 routing table
clear ipv6 route ipv6 address	Clears this specific route from the IPv6 routing table
clear ipv6 traffic	Resets IPv6 traffic counters
debug ipv6 packet	Displays debug messages for IPv6 packets
debug ipv6 rip	Displays debug messages for IPv6 RIP routing transactions
debug ipv6 routing	Displays debug messages for IPv6 routing table updates and route cache updates
show ipv6 interface	Displays the status of interfaces configured for IPv6
show ipv6 interface brief	Displays a summarized status of interfaces configured for IPv6
show ipv6 neighbors	Displays IPv6 neighbor discovery cache information
show ipv6 protocols	Displays the parameters and current state of the active IPv6 routing protocol processes
show ipv6 rip	Displays the parameters and current state of active IPv6 routing protocol processes
show ipv6 route	Displays the current IPv6 routing table
show ipv6 route summary	Displays a summarized form of the current IPv6 routing table
show ipv6 routers	Displays IPv6 router advertisement information received from other routers
show ipv6 static	Displays only static IPv6 routes installed in the routing table
show ipv6 static ipv6 address	Displays only static route information about the specific address given
show ipv6 static interface interface	Displays only static route information with the specified interface as the outgoing interface
show ipv6 static detail	Displays a more detailed entry for IPv6 static routes
show ipv6 traffic	Displays statistics about IPv6 traffic
show ipv6 tunnel	Displays IPv6 tunnel information

References

• IOS IPv6 Configuration Guide, Release 12.2SR