From: james.patterson@xxxxxxxxxxxxxx
Date: Mon Apr 30 2001 - 05:27:12 GMT-3
Caolw ?
Do you have to redistribute in and out of your IGP ?
If not, what about using Sync, so that only IGP routes are advertised to
EBGP.
The other way would be to write a Route-map or prefix-list to control what
you advertise.... (not an AS-PATH filter)
HTH
James
"caolw" <caolw@fosco.com.cn>@groupstudy.com on 30/04/2001 05:25:37
Please respond to "caolw" <caolw@fosco.com.cn>
Sent by: nobody@groupstudy.com
To: "Groupstudy" <ccielab@groupstudy.com>
cc: (bcc: Mail Administrator/Newcastle/Computer Systems Australia);
(bcc: )
Subject: about transit AS
Hi,All:
I have a question about BGP.
(AS254)---r1-(AS1)-r2-(AS1)-r3--(AS254)
1. r1,r2,r3 are in AS1,
2. r1,r3 are border router.r2 is RR.
peer is AS254
3. the request is:donot let AS1 become a transit AS
4. Donot use as-path filter.
My answer is use Commumity attri.
I let r1 and r3's incoming routes set no-export.
and send-community to r2.
r2 send-community to r1 r3.
But I know my answer is wrong.
Is anyone have any other solutions?
Thanks.
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