From: RSiddappa@xxxxxxxxxx
Date: Fri Mar 08 2002 - 19:49:59 GMT-3
What u r looking at is BGP table. It is showing here, by installing as
* >i.
This means that, this route was learnet through IGP rather than an IBGP. And
the same route is there in the routing table so that it will advertise it to
the EBGP neighbor.
For u verify which path does the packet takes is it BGP or IGp u need to
llok in to the
Routing table by doing show IP route.
R.
-----Original Message-----
From: Joe Jia [mailto:ellenjjl@rogers.com]
Sent: Friday, March 08, 2002 3:06 PM
To: ccielab@groupstudy.com
Subject: BGP best path
Hi,
Could someone please help me to explain the following, why the bgp chooses
the
iBGP as the best one?
Why doesn't it choose the external one as the best one?
P1R3>show ip bgp
Network Next Hop Metric
Local
Prof Weight Path
* >i 172.17.11.0/24 10.33.255.2 0 100
0 (65535) i
* 10.34.255.1 0
100 0 (65535) i
* 172.17.255.1 0
0 1000 i
P1R3> show ip bgp 172.17.11.0
BGP routing table entry for 172.17.11.0/24, version 29
Paths: (3 available, best#1, table Default-IP-Routing-Table)
Advertised to non peer-group peers:
10.34.255.1 172.17.255.1
(65535)
10.33.255.2 (metric 65) from 10.33.255.2 (10.33.255.2)
Origin IGP , metric 0, localpref 100, valid,
internal,
best
(65535)
10.34.255.1 (metric 65) from 10.34.255.1 (172.17.11.1)
Origin IGP , metric 0, localpref 100, valid,
confed-external
1000
172.17.255.1 (metric 65) from 172.17.255.1 (172.17.255.1)
Origin IGP , metric 0, localpref 100, valid,
external
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