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Friday, August 10, 2012

BGP Route selection

Here is quick reminder for BGP route selection:

Next Hop is reachable? (NLRI)

Weight (higher is better)

Local Preference (higher is better)

Local injected networks (Prefer the path that was locally originated via a network or aggregate BGP subcommand or through redistribution from an IGP)

AS-Path (shortest)

Origin (IGP,EGP, ? incomplete - lower is better were IGP is lowest)

MED (Lower is better)

Network type (prefer eBGP over iBGP)

IGP route selection (Lowest IGP metric)

Mnemonic: NWLLA OMNI 

at last if none of these could be a tie breaker use lowest BGP router-ID as prefered.

1 comment:

  1. מאמר מצויין אם אתם לקראת בניית בית אני ממליץ על קבלן גמר לוילה שיתן לכם את כל הפתרונות לבניית שלד ובכלל לבניית הבית שלכם מומלץ מאוד