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