From: Chuck Larrieu (chuck@xxxxxxxxxxxxx)
Date: Mon Feb 19 2001 - 11:03:56 GMT-3
Well that was fun. In addition to the usual things, several of us picked up
some of the bizarre things that appear to happen on the internet.
For example, with one person, the only way we could peer was through a GRE
tunnel. Although on my side I had no problem peering with two other persons,
one of them, I believe, had to put in static routes to me and to the other
person with whom he was peering. Finally, for the last person who joined
the party, I too had to pt in a static route to his side in order to peer,
even though I had two other "across the net" peers established without
statics.
Then there was the issue of summarization. Problem - how to summarize to
eBGP neighbors while sending full routes to iBGP neighbors.
Aggregate-address summary-only summarizes to everyone. My experiments with
prefix-list did not yield the results I wanted.
MED - high value wins. In cases where two routers peer with one router in
another AS, only one of the two need send a MED.
Never did have time to get local preference to work throughout an AS.
Lorda mercy you have to be well organized to be an ISP!! :->
Well, only 47 days to go. I don't think I'm going to have time for another
one of these. But I do want to thank everyone who participated.
Chuck
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Chuck Larrieu
Sent: Saturday, February 17, 2001 10:19 AM
To: CCIE_Lab Groupstudy List
Subject: Open BGP Experiments - connect via the internet
OK, you bad boys and girls, I will be making my pod available across the
internet for those of you who want to try some further exercises with
multiple BGP AS's
I will have two routers on the public IP side, in the same AS, so you can
work with things like MED and weight.
My AS numbers on my side are 51000 ( connected to the public side ), 51001,
51002, and 51003 on my inside.
I am also using subnets in the 172.29.0.0 range on my inside.
Send me an e-mail privately, with your IP address, the AS number you are
using ( for eBGP - don't forget the ebgp-multihop command!!! IBGP should
work with no issues, so long as your ISP is not NAT'g through or doing any
packet filtering of TCP port 179 ) In turn, I will set you up on my routers
and send you my outside IP addresses.
As I am still in the process of setting things up, my internal routes and
structures may change over the course of the weekend ( and yes I am planning
to leave the connections up all weekend )
Sorry, but I have turned off telnet access to all my routers, so you will
not be able to poke around inside. But you should be able to practice
filtering and metric manipulation of various sorts. It oughta be fun,
particularly if I get several of you hooked up.
I have some other things I am working on, so I am not going to the chat
room. But for those of you who may want to connect to other people who are
joining in, may I suggest using the chat room at
http://www.allnetllc.net/chat/ciscochat.htm
as a means of communicating.
I will be checking e-mail frequently as I work today and tomorrow. So I
should be able to respond quickly and have you set up in short order. I will
be out for a few hours later today - got to do some exercise to keep from
becoming too well rounded, you know. :->
Let's have some fun!
Chuck
A long shot at passing is better than no shot.
Right now that's all I got to get me through,
So I gotta believe!
( paraphrased from Kathy Baille / Baille and the Boys
a song from several years ago )
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:28:52 GMT-3