From: Suplepo (suplepo@yahoo.com)
Date: Sun Apr 22 2007 - 13:21:09 ART
I'm working through a sample lab and have hit a snag.
R1 Is advertising networks 1.1.1.1/32 and 2.2.2.2/32
into BGP. Instructions state
1) Configure R3 so that it's the preferred path for
traffic network 1.1.1.1/32
2) Configure R2 so that it's the preferred path for
traffic to network 2.2.2.2/32
I can easily do this with AS-path prepending or MED,
but since both of these must be configured on the
non-desireable path I'm stuck. Is there anything I can
do on the desired inbound path (R3 for 1.1.1.1) to
ensure it's the best path. Since R1 is advertising the
routes to both R2 & R3 conditional advertisement from
R3 and R2 will not work.
This all has me thinking I looking at a mistake in the
question, but thought I'd bounce it off the collective
to make sure there's not another option.
Topology below,
iBGP peerings R1<->R2, R1<->R3, R3<->R2
eBGP peerings R3<->R4, R2<->R4
|
AS1 | AS2
|
R3--------eBGP-----------R4
|\ |
| \ |
| R1 |
| / |
| / |
R2---------eBGP----------|
This archive was generated by hypermail 2.1.4 : Tue May 01 2007 - 08:28:36 ART