[c-nsp] Cisco 7600 BGP route-map processing

Walter Keen walter.keen at RainierConnect.net
Fri Jan 22 12:41:06 EST 2010


I was curious if route-map processing in BGP neighbor statements is done 
in software or hardware on the 7600/rsp7203cxl and 7600/sup7203b.

Mostly looking at route-maps to define blocks to advertise, and set 
communities, as well as perform actions based on communities (control 
level of prepending to certain upstream peers(prepend 3x to provider A, 
but 1x to provider C), or the exit point to upstream peers based on the 
set communities(likely by setting next-hop ip for egress traffic)) and 
wondering if this will have a significant impact on the CPU.  Total bgp 
routes are probably <50, and bandwidth through any one link is typically 
<100mbit (each router has 3 links)

-- 


Walter Keen
Network Technician
Rainier Connect



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