From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Jun 03 2005 - 13:08:23 GMT-3
Last week there was some discussion about this but I don't think it was ever
resolved.  Has anyone thought of a way to load-balance between ibgp and ebgp
learned routes?
TIA, Tim
-----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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