BGP Address Family

Hello Team,

I was working on BGP lab and came across multiple address family command.
Can anyone please explain one of the below command and correct other two if
it is incorrect.

1. address-family ipv4 unicast - I have disabled this command instead of
disabling no bgp default ipv4-unicast. I didn't see any difference, may be I
don't know why we need this command.

2. no bgp default ipv4-unicast - This command is required to disable normal
IPv4 adjacency.

3. address-family vpnv4 unicast - This command will provide mechanism to
carry additional attributes across BGP updates such as RT,SoO, Domain-ID,
metric propagation and make true MP-BGP.

I have seen some past post, but still little bit confused.

Can anyone please shed some light on above points.

Thanks,

Bilal Hansrod

Blogs and organic groups at http://www.ccie.net
Received on Fri Jun 03 2011 - 23:45:16 ART