RE: Basic BGP question

From: Paresh Khatri (Paresh.Khatri@aapt.com.au)
Date: Mon Jul 11 2005 - 00:23:21 GMT-3


Hi,

Question 1: Yes, it will work. When using RRs, the requirement is to have a full-mesh between all RRs and non-client IBGP peers, which you have got.

Question 2: Within confederations, session establishment works just as it does between actual EBGP peers. Therefore, if you are configuring a session between peers in two different sub-ASs, you will need to use ebgp-multihop if you are peering to non-directly-connected addresses (e.g. loopbacks).

HTH,
Paresh.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
san
Sent: Monday, 11 July 2005 01:09 PM
To: lab
Subject: Basic BGP question

Hi all,

Below basic BGP questions poped up my mind. I am sure most of you know.

Question 1:
-----------------

R6----ebgp----R1 -------R2-------R3-----ebgp---R7

R1, R2, and R3 are IBGP.
R5 & R7 are external peers

Quote:
Routes from Non-client (R3) is advertised to clients only.
Routes from Clients is advertised to non-clients + other clients.

Assuming the quote is correct, Can i define just R1 as client to R2
& leave R3 as non-client to R2. Will everything work ok ? or Is
there a problem expected ?

Question 2:
-----------------

Within Confederation, according to previous observations & notes (IE
lab 8) i have written down "ebgp-multihop is not needed within
private peers of same confederation". I recently saw a
contradicating statement in one of the tech tips... that Can you
answer which one is correct ?

Thanks in Advance
/SAN



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