OSPFv3 oddities

[bellocarico]

Hi, I'm playing with OSPFv3.

In few of my routers it seems to be supported, as I can run the process:

Router(config)#ipv6 unicast-routing

Router(config)#ipv6 router ospf 1

Router(config-rtr)#

Plus I can enable it on the interface

Router(config-if)#ipv6 address 2001::1/64

Router(config-if)#ipv6 ospf 1 area 0

Fair enough.

In some other router it is not supported. Fair enough again.

Where in a couple of routers I've found an odd behaviour:

Router(config)#ipv6 unicast-routing

Router(config)#ipv6 router ?

ospf Open Shortest Path First (OSPF)

rip IPv6 Routing Information Protocol (RIPv6)

Router(config)#ipv6 router ospf 1

Router(config)#

As you can see, the option it is there, but it doesn't enter in router config mode, and doesn't give any error either.

I'm confused on this. It seems like it is supported, but it is not!

RIP instead works fine.

Any idea?

Thanks to read!

[pkhatri]

Hi,

This is probably an artifact of OSPFv3's relatively late introduction into IOS. I suspect that the IOS cut on that second router does not support OSPFv3. You will find similar behaviour when running IOSes that don't support things such as ISIS - the parser will allow you to enter 'router isis' but then will immediately drop you back into global config mode...

Paresh