Peter Kranz wrote:
Setup is as follows; 2 edge routers, each with a BGP session receiving full routes to the same provider router. The provider is load balancing inbound traffic to our AS nicely, 50/50 between the edge routers.. I would also like to load balance the outbound traffic.. I've considered adding 'maximum-paths 2' to install the two equal paths, but an concerned about FIB TCAM impacts. Will adding this command cause each equal cost route to take one additional TCAM entry, i.e. full routing table x 2 > 524k TCAM limit = EPIC meltdown?
I'm not 100% certain about this, but my understanding is that there is still only 1 FIB entry for the route; it just has >1 next hop.
However - will this work? For eBGP-multipath, the paths have to be basically identical except next-hop. This won't be the case, since each router will prefer its direct link (lower IGP cost).
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