BGP: Difference between revisions
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* The dampened route will be reused when the penalty is decoyed into 750 (Reuse penalty).
* The routes experiencing route flaps should not be suppressed for more than 60 minutes (Max suppress time).
= Multipath =
* Unlike most routing protocols, BGP only selects a single best path for each prefix.
* It doesn’t do ECMP (Equal Cost Multi-Path Routing) by default but it is possible to enable this.
* In order for BGP to use the second path, the following attributes have to match:
Weight
Local Preference
AS Path (both AS number and AS path length)
Origin code
MED
IGP metric
* Next hop address for each path must be different.
* This comes into play when you are multihomed to the same router.
;Config:
R1(config)#router bgp 1
R1(config-router)#maximum-paths 2
= EBGP vs IBGP =
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