--- On Tue, 6/26/12, Deric Kwok <deric.kwok2000@gmail.com> wrote:
From: Deric Kwok <deric.kwok2000@gmail.com> Subject: please helpconfederation and ibgp question To: "nanog list" <nanog@nanog.org> Date: Tuesday, June 26, 2012, 12:51 PM Hi all
I would like to ask questions aboutconfederation and ibgp
We know confederation from nanog achieve 101,102 and setup lab. bgp and ibgp can work properly but not sure we are doing right.
We have quesions
1/ for the annoucing networks, do we have to announce it in border routers? eg: border routers. 66.59.128.0/22 but all ibgp routers are already announcing networks individually in ibgp Routers eg: Router A: 66.59.128.0/24, Router B: 66.59.129.0/24, Router C: 66.59.130.0/24, Router D: 66.59.131.128/25
In our labs, it can work. but we would like to know the setting is correct. or any announcing overlapping when announcing in broder Router and all individual ibgp routers
2/ But if it is not right to announce /22 in broder routers, let Router A,B,C, D announce it in 4 separate networks. ls it ok too? in the lab, the bgp can work too. but i read the bgp doc that it prefers us to announce it in /22 instead of 4 seperate one?
3/ in the border routers, we take out some ip from network 66.59.131.0/24 (eg: 66.59.131.0/28, 66.59.131.16/28) to interconnected to Router A, B, C and D We don't know which one is good for use in bgp configuration
redistributed connected or network 66.59.131.0/28 network 66.59.131.16/28
If using network command "network 66.59.131.0/28, network 66.59.131.0/28" to let communicate between ibgp, there might have overlapping too as we already announcing 66.59.128.0/22. in the border router, there might have
network 66.59.128.0/22 network 66.59.131.0/28 network 66.59.131.16/28
ls the command "redistributed connect" better? but this is border Router. We concern it will effect the upstream using redistributed connect
Please help
Thank you so much
Deric- I don't mean to sound rude but I think it is time you asked $Employer for routing/switching/best-practices training. It will help you understand what you do and why you do it. The labs, and NANOG presentations are a good start. ./Randy