Re: BGP Address Family

Thanks Marc,

I believe, there are three options with this command (address-family ipv4
unicast). i.e.

*address-family ipv4* [*multicast* | *unicast* | *vrf* *vrf-name*]

If I am only using address-family ipv4 unicast that I am not referencing to
vrf and essence not using vrf. By researching more and reading this Blog (
http://blog.ioshints.info/2008/06/use-explicit-address-family-ipv4-in-bgp.html),
I understand it provides easy to read configuration feature if we are using
all three options such as MPLS VPN, IPv6 or IP Multicast over BGP.

Thanks,

Bilal Hansrod

 Sat, Jun 4, 2011 at 12:15 PM, marc edwards <renorider_at_gmail.com> wrote:

> Will add 32 bits to header to carry vrf information over MPLS backbone.
> Essentially that command enables MP BGP
> On Jun 3, 2011 6:46 AM, "Bilal Hansrod" <bilal.hansrod_at_gmail.com> wrote:
> > 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
> >
> >
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Received on Sat Jun 04 2011 - 12:35:45 ART