Huawei Quidway NetEngine80E Configuration Manual page 929

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
BGP local router ID : 10.1.2.1
Local AS number : 65001
Paths:
BGP routing table entry information of 10.11.0.0/16:
From: 10.1.3.2 (10.1.3.2)
Route Duration: 00h08m35s
Direct Out-interface: GigabitEthernet0/0/1
Original nexthop: 10.1.3.2
Qos information : 0x0
AS-path 200, origin incomplete, pref-val 0, valid, external, best, select, active,
pre 255
Advertised to such 2 peers:
BGP routing table entry information of 10.11.0.0/16:
From: 10.1.2.2 (10.1.2.2)
Route Duration: 00h04m38s
Direct Out-interface: GigabitEthernet0/0/0
Original nexthop: 10.1.2.2
Qos information : 0x0
AS-path 300 100, origin incomplete, pref-val 0, valid, external, pre 255, not
preferred for AS-Path
Not advertised to any peer yet
The preceding command output shows that the AS_Path of the route learned from ISP2 is shorter
than that of the route learned from ISP1. Therefore, the route learned from ISP2 is selected as
the optimal route.
learned from ISP1 and ISP2.
Table 8-17 Route attribute comparison of the route learned from ISP1 and that learned from
ISP2
Route Attribute
PrefVal
Local_Pref
Route type
AIGP
AS_Path
Issue 02 (2014-09-30)
2 available, 1 best, 1 select
10.1.3.2
10.1.2.2
Table 8-17
Route Learned
from ISP1
0
-
Learned from a peer
-
300 100
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shows the route attribute comparison of the routes 10.11.0.0/16
Route Learned
from ISP2
0
-
Learned from a peer
-
200
8 BGP Configuration
Comparison
The same.
The same.
NOTE
If a route does not
carry Local_Pref, the
default value 100
takes effect.
The same.
The same.
The route learned
from ISP2 is selected
as the optimal route
because its AS_Path
is shorter than that of
the route learned
from ISP1.
904