From: Matthew Poole (matthew.poole@blueyonder.co.uk)
Date: Tue Jan 07 2003 - 07:19:47 GMT-3
Hi Prio,
I'm pretty new to BGP but here goes.....
Your first two points I agree with, but remember the synchronisation rule.
This states something along the lines of an IBGP speaker can only send a
route to an EBGP peer if the route has been learnt by an IGP.
I think this is why your not getting the loopback in A's BGP table - B and C
haven't learnt the route via an IGP. It is however in D's routing table as
it is directly connected.
Because you have a full mesh in AS 1000 you could disable synchronisation
rule, using no "no sync" command in the BGP process for routers B + C. A
should then receive the route.
Sorry can't help with the confederation - give me a couple of days till I
get there ;-)
Mat.
----- Original Message -----
From: <rionaldi@cbn.net.id>
To: <ccielab@groupstudy.com>
Sent: Tuesday, January 07, 2003 9:16 AM
Subject: BGP Questions
> Dear All,
>
> Question1
> My understanding regarding BGP update:
> 1. routes receive from IBGP peer only sent ot EBGP peer
> 2. routes receive from EBGP peer sent to EBGP peer and IBGP peer.
> right ?
>
> I configure 4 routers
> A--------------B------------C--------------D
>
> B & C let say in AS 1000
> A in AS 2000
> C in as 3000
>
> Configuration:
> All router configured with synronization on.
> I set B to have neighbor <IP A> next-hop-self
> I set C to have neighbor <IP B> next-hop-self
> I inject loopback in D into BGP.
>
> with this configuration, all of the router should have D loopback in their
BGP
> table, right? But it is not...? D loopback routes only appear in router
B,C
> and D only.
>
> Question2
>
> Anyone ever see or configure in BGP confederation but one of the router is
not
> joining the confederation for example 4 router in AS 1000 with BGP
> confederation identification 50. All router is in full mesh configuration
>
> I set in all 3 router
>
> router bgp 1000
> bgp confederation identifier 50
>
> the other one router with no bgp confederation identifier 50
>
> How this effect the bgp confederation?
>
> Regards,
> Prio
> .
.
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