BGP and Local Preference

From: GOLBERY Irčne (irene.golbery@xxxxxxxx)
Date: Wed Apr 24 2002 - 05:02:56 GMT-3


   
Hello,

I am looking for some URL or documentation "EXPLAINING IN DETAILS" how does
local preference is represented in the SHOW IP BGP command ?

       10.0.0.0/8
------------------------------
 | |
RC (AS 2) RD
 | |
 | |
 | |
RA (AS 1) RB

I mean,
- RA(lo0:3.3.3.1) iBGP peer with RB (lo0:3.3.3.2) in AS 1
- RA(lo0:3.3.3.1) eBGP peer with RC (lo0:3.3.3.3) in AS 2
- RB(lo0:3.3.3.2) eBGP peer with RD(lo0:3.3.3.4) in AS 2

RA set a Local preference of 200 for network 10. 0.0.0 announced by RC
RB doesn 't change the defaul local preference

When looking at the sh ip bgp,

RB#sh ip bgp
   Network Next Hop Metric LocPrf Weight
Path
* 10.0.0.0/8 3.3.3.4 0 2 i
*>i 3.3.3.1 200 0 2 i

RA#sh ip bgp
        Network Next Hop Metric LocPrf
Weight Path
*> 10.0.0.0/8 3.3.3.3 200 0 2 i

How does the "show ip bgp command" interpret the information of the local
preference ?

I need to find details informations.

Thanks for your help

Irene.



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