From: mcaplan.cs@xxxxxxxxxxxxxxx
Date: Wed May 16 2001 - 10:28:38 GMT-3
Has anyone tested Halabi's scenarios, and confirm an observation of mine
I'm doing AS_Path manipulation with the same config as pg 332. The diagram
of the network is on pg326. He says that when the prepend route map is added
to RTC, that RTF should see 2 routes to network 192.68.11.0 - one via RTC,
the other via RTD.
ie
*> 192.68.11.0 192.68.5.2 0 2 1 i
* i 172.16.20.1 0 100 0 1 1 1 i
This doesn't work out in my network, and I dont think it should. This is
what I get for the BGP table on RTF
Network Next Hop Metric LocPrf Weight Path
* i172.16.1.0/24 172.16.2.254 0 100 0 i
*> 0.0.0.0 0 32768 i
* i172.16.10.0/24 172.16.2.254 11 100 0 i
*> 0.0.0.0 0 32768 i
* i172.16.65.0/26 172.16.2.254 11 100 0 i
*> 0.0.0.0 0 32768 i
*>i172.16.220.0/24 172.16.2.254 0 100 0 i
*> 192.68.10.0 192.68.5.2 0 0 2 i
*> 192.68.11.0 192.68.5.2 0 2 1 i
RTF only sees the one route via RTD. This makes sense because RTF advertises
this route to RTA, which becomes a better route for RTA. so RTA wont
advertise the route with the prepended AS.
RTA's BGP routing table shows:
*>i192.68.11.0 172.16.1.2 100 0 2 1 i
* 172.16.20.1 0 0 1 1 1 i
Can anyone confirm my logic here or have I done something different to
Halabi's config
Thanks
Mark
Visit us at http://www.clearstream.com
IMPORTANT MESSAGE
Internet communications are not secure and therefore Clearstream International
does not
accept legal responsibility for the contents of this message.
The information contained in this e-mail is confidential and may be legally pri
vileged. It is
intended solely for the addressee. If you are not the intended recipient, any d
isclosure,
copying, distribution or any action taken or omitted to be taken in reliance on
it, is
prohibited and may be unlawful. Any views expressed in this e-mail are those of
the
individual sender, except where the sender specifically states them to be the v
iews of
Clearstream International or of any of its affiliates or subsidiaries.
END OF DISCLAIMER
**Please read:http://www.groupstudy.com/list/posting.html
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:30:42 GMT-3