From: Stefan Grey (examplebrain@hotmail.com)
Date: Thu Jan 25 2007 - 18:54:17 ART
Hello guys,
R2 R3
| |
|--R1---|
/ \
.188 .189.
Question is following, hope will be interesting:
Between R1 and R2 is EBGP, between R1 and R3 is also EBGP. R1 is the router
in the company and is in the global AS asigned to the company. R2 belongs to
first provider, R3 belongs to the second provider. Networks .188 and .189
are directly connected to the R1 router. Network 144.3.3.0 is advertised to
R1 from routers R2 and R3. The expectations are following: when the hosts
from .188 network want reach 144.3.3.0 network the packets should go to R2
router, when the hosts from .188 want communicate with 144.3.3.0 the packets
should go through R3 router. When the logical connection between R1 and R2
fails, say there is no neighborship... all traffic from all neighbors should
go to R3. And vice versa when connection to R3 fails all traffic should go
through R2 router. We can change config on any of the routers and solution
could be any.... Do you have any ideas how is it possible to acheeve it???
How to acheeve it with only R1 as is??? Is it possible at all??
Please help. Your ideas are highly appreciated. This is the question which
arised in one of the big banks which is actually my key account.
P.S The only idea I had was add another router R4 on the companies edge so
that each of two routers would be connected to one provider and than using
weight attribute achieve the needed functionality. Do you have any other
ideas. Is it somehow possible to achieve this not changing current
topology??
Thank you very much!!!
This archive was generated by hypermail 2.1.4 : Thu Feb 08 2007 - 23:46:57 ART