BGP solution ?

Gleb Smirnoff glebius at cell.sick.ru
Wed Jan 21 03:52:54 PST 2004


On Wed, Jan 21, 2004 at 01:45:09PM +0200, Georgi Moskov wrote:
G> I have tha following setup:
G> 
G>                        --- B ---
G>                       /         \
G>                      /           \     6802:100
G>  194.141.24.0/24 -- A             C ----------- F
G>                      \           /    6802:200
G>                       \         /
G>                        --- D ---
G> 
G> Router F advertises to router C prefixes marked widh community 6802:100
G> and prefixes marked with 6802:200. Is it possible to configure the routers
G> in such a way, that traffic to/from 194.141.24.0/24 and prefixes marked
G> widh 6802:100 to pass through router B and traffic to/from 6802:200 to
G> pass through router D ? (the ruters use zebra)

  To configure incoming traffic to 194.141.24.0/24, you should create
route maps on C, like this:

match community 6802:(1,2)00
set as path prepend XXXX XXXX

 and attach this route maps to corresponding neighbor (don't forget "out"
keyword).

  To deal with outgoing traffic, you should create route maps on A, like
this:

match commnity 6802:(1,2)00
set localpref 110

  and attach them to corresponding neighbors, with "in" keyword.

-- 
Totus tuus, Glebius.
GLEBIUS-RIPN GLEB-RIPE


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