Re: BGP community in IOS XR

In IOS ; you will see that as soon as you enable vpnv4 peering ; you get
the command automatically enabled :

 !
 address-family vpnv4
  neighbor 66.66.66.66 activate
  neighbor 66.66.66.66 send-community extended <<<<< automatic command
 exit-address-family
 !
this is needed when we encode the attributes of OSPF , EIGRP etc inside a
vpnv4 update

IN IOS-XR :
*************
the purpose of the command is same but this is not automatic command :
   neigh <a.b.c.d>
   remote-as 6666
    send-extended-community-ebgp

Hence in i-bgp this command has no relevance ( as per my understanding )

Please correct me if I am not correct here.

On 8 June 2014 11:35, Hai Trieu Tran <trantrieu.2010_at_gmail.com> wrote:

> Hi all.
>
> Have a nice day.
>
> I have a question related to MPLS and BGP. I have just read about:
>
> 1. In IOS, all communities are not sent by default to iBGP or eBGP
> sessions.
>
> 2. In IOS-XR, all communities are sent by default on iBGP sessions,
> but not on eBGP sessions.
>
> Is that right? If it is right in IOS XR, it should be that we have to use
> "send-extended-community-ebgp" when we want to neighbor with a router in
> remote AS? Right?
>
> For example: router bgp 100
> nei 10.1.2.2
> remote 200
> address-fa ipv4 mdt
> send-extended-community-ebgp
> exi
> exi
>
> And last one, if it is an iBGP, it doesn't need using any command like
> "send-community extended" in IOS XR?
>
> Thanks all.
>
>
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Received on Sun Jun 08 2014 - 12:32:40 ART