From: CCIE6296 (ccie6296@aces-star.com)
Date: Fri May 27 2005 - 09:11:09 GMT-3
Hi Tim,
Use the backdoor command so that the AD for the route learn is same for both
iBGP and eBGP.
Cheers!
csyeo
CS Yeo
CCIE6296, CISSP, PMP, MCSE
http://www.aces-star.com
Your Asia rack rental source.
Ace the CCIE lab
-----Original Message-----
From: ccie2be [mailto:ccie2be@nyc.rr.com]
Sent: Friday, May 27, 2005 4:58 AM
To: Group Study
Subject: BGP Load-balancing betw ibgp and ebgp paths
Hi guys,
I now know how to configure BGP to load-balance between paths learned from
either multiple ebgp peers or from multiple ibgp peers.
maximum-paths # --- for ebgp peers
maximum-paths ibgp # -- for ibgp peers
But, how is load balancing configured when the same route is learned from
both an ibgp and an ebgp peer?
I looked at all the bgp commands available under the bgp process but none
appear to do the trick.
Any ideas?
TIA, Tim
R6(config-router)#bgp ?
always-compare-med Allow comparing MED from different neighbors
bestpath Change the default bestpath selection
client-to-client Configure client to client route reflection
cluster-id Configure Route-Reflector Cluster-id
confederation AS confederation parameters
dampening Enable route-flap dampening
default Configure BGP defaults
deterministic-med Pick the best-MED path among paths advertised from
the neighboring AS
dmzlink-bw Use DMZ Link Bandwidth as weight for BGP
multipaths
fast-external-fallover Immediately reset session if a link to a directly
connected external peer goes down
inject-map Routemap which specifies prefixes to inject
log-neighbor-changes Log neighbor up/down and reset reason
redistribute-internal Allow redistribution of iBGP into IGPs (dangerous)
router-id Override configured router identifier
scan-time Configure background scanner interval
R6(config-router)#bgp best ?
compare-routerid Compare router-id for identical EBGP paths
dampening Enable route-flap dampening
dmzlink-bw Use DMZ Link Bandwidth as weight for BGP multipaths
inject-map Routemap which specifies prefixes to inject
med MED attribute
scan-time Configure background scanner interval
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