From: Sean C (Upp_and_Upp@hotmail.com)
Date: Fri Jun 03 2005 - 13:42:48 GMT-3
I had suggested the info below but the only response was from Simon who
thought it was worth a shot:
A new feature for eBGP and iBGP load-balancing:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t4/fteibmpl.htm#wp1027129
The Doc says it's only for MPLS VPNs - but maybe it can work for the
scenario.
Sean
----- Original Message -----
From: "ccie2be" <ccie2be@nyc.rr.com>
To: "'Group Study'" <ccielab@groupstudy.com>
Sent: Friday, June 03, 2005 12:08 PM
Subject: RE: BGP Load-balancing betw ibgp and ebgp paths
> 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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