From: Andre Scalco (a_scalco@yahoo.com)
Date: Sat Feb 19 2005 - 00:59:59 GMT-3
I'm testing some features of MPLS in a LAB and I got a scenario that I would like to discuss with you.
I have two CEs configured injecting the same network (10.0.0.0/24) to their respective PEs, one PE is setting the Local Preference as 100 and the other one as 150.
On a Third PE I do see the network 10.0.0.0/24 being correctly learned from the PE that is setting the LP as 150, but I don't actually see on my bgp table for that VRF the other possible path from the PE that's setting as 100.
My assumption is that when the Third PE do the "scan" to place that 10.0.0.0/24 under the VRF it does select only one possible path regardless the network is coming from more than one place. However if I do a "Show ip bgp vpn rd all" then I should see this network from the two PEs that are advertising this network.
So in other words, in MP-BGP I should consider this rules with extended community RT before any standard best path selection algorithm "weight,lp,med,etc"
Let me know what you guys think,
Andre
Best Regards,
Andre Scalco
"Think Outside the Bun"
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