Multi-Protocol BGP

[ixholla69]

With IPv6 Coming i've been tasked with implimenting M-BGP on our 7200VXR running 12.4 and was wondering if someone could point me to either a good reference to configuring this or possibly shooting me an example config.

Little to nothing is my expertise in this area of the BGP protocol so don't be shy.

Thank you!

[Roman Rodichev]

This should help

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-multicast.html#wp1059064

[ixholla69]

Just one thing that bothers me.......

"no bgp default ipv4-unicast"

Is there no way to run IPv4 and IPv6 together/parralel/simultaneously??

I have a very large IPv4 BGP network.

[Roman Rodichev · Accepted solution]

Great question! That command does NOT have any effect on BGP operation, it simply changes IPv4 global configuration style to address-family ipv4 configuration style. I highly recommend configuring that command. It will make configs cleaner.

Message was edited by: Roman Rodichev Added "NOT"

[abrissonnet · Accepted solution]

Hi,

You can run IPv4 and IPv6 bgp routing in the same time, but for only one AS. You can bypass this limit by using vrf and local-as feature. Here is an exemple :

router bgp

no bgp default ipv4-unicast

neighbor remote-as

neighbor remote-as

address-family ipv4

     neighboor activate

     ....

!

address-family ipv6

     neighboor activate

     .....

!

The statement "no bgp default ipv4-unicast" is generally use to disable automatic peering with IPv4 neighboor (use in MPLS network with vpnv4 family section). But if you use this command, you have to activate all your neighboor before prefix exchange.

Like the precedent post, I recommend to use it.

I hope I can help you.

[ixholla69]

Awesome, thanks guys.... that puts me more at ease lol.