From: Thekkethala (thek@xxxxxxxxxxxx)
Date: Fri Nov 16 2001 - 03:49:17 GMT-3
Just a sudden 'shake-up' in my fundamentals all of a sudden
Here is the clarification. (EBGP links - do they need to be leaked ???)
1. You have multiple AS's and have EBGP running between them all.
as1 ------->as2----->as3------->as4 (a single router in each AS for example)
lets say yu configure a loopback address in as1 and leak it into bgp via a
network statement in as1.
Now, keeping the config (basic) as is, yu sit on the router on as4 and try a
ping back to as1 to this interface. It does no go thru. However all the BGP
tables enroute indicate this entry and since they are directly connected ebgp
setups, the next hop are there in the ip routing table as well (directly
connected).I then did a redistribute-connected under the bgp process on ALL
the routers and tried again - no luck in reaching the loopback address in as1
FROM as4 - however from as2 no problems / as3 and as4 no go at all !!
My Question>
1. The eBGP links between routers :
Do we ALWAYS need to consciously redistribute them in BGP setup
(using either the redistribute-connected or network statement along with a no
auto-summary) to enable a ping / traceroute etc .. for ip basically
...........
I am sorry if this sounds really elementary ... but am quite puzzled - what if
I have a setup involving 50/60 ebgp session (in theory I mean) ....!!!!!
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