From: Guyler, Rik (rguyler@shp-dayton.org)
Date: Wed Nov 14 2007 - 13:57:01 ART
Dara, I won't disagree with you at all. I would consider using a
loopback myself as a best practice in real life but since the nature of
this list is geared towards lab study, you can throw best practice out
the window. There are obvious things you can do to make your life a
little easier, organized, etc. in the lab that mimic real-world things
but I don't know if this is one of them.
Think about how the config has to change in order to peer with
loopbacks. Are the changes going to affect the outcome of the
requirements? Are you adding complexity to your troubleshooting by
doing this? This is how you have to think in order to make unnecessary
changes to your final lab configs. The goal in the lab isn't to create
a high availability BGP connection unless the requirements say to do so.
Rik
________________________________
From: dara tomar [mailto:wish2ie@gmail.com]
Sent: Wednesday, November 14, 2007 11:28 AM
To: Guyler, Rik
Cc: Asim Zafar; Cisco certification
Subject: Re: loopback for bgp
Rik,
What you say is correct but mostly for EBGP sessions.
The same changes in IBGP and using the loopback is one amongst the best
practices.
Although things here are in accordance with the question you get in your
exam and dependent on the BGP session type, what we can do is stick to
best practices if nothing is restricting the same.Although this is what
I feel.
ideas/corrections always invited.
Regards,
Dara
On Nov 14, 2007 9:16 PM, Guyler, Rik <rguyler@shp-dayton.org> wrote:
Using a loopback for the peer address will allow the peer to
stay up in
the event of a single link failure when you have multiple links
to that
peer. The obvious caveat is that the loopback address is
reachable over
the multiple links. Do you have to do this? No, not if the
requirements don't say to do this. You can always use the
physical
interface address as the peer address, which would be typical
for a peer
with just a single path to it.
Rik
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com ] On
Behalf Of
Asim Zafar
Sent: Wednesday, November 14, 2007 8:25 AM
To: Cisco certification
Subject: loopback for bgp
Hi All,
It is necessary to configure bgp on loopback; where redundant
path exist
or we have choice if not asked in the lab.
--
Thanks & Regards,
Asim Zafar
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