Huawei Quidway NetEngine80E Configuration Manual page 936

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Original nexthop: 10.1.2.1
Qos information : 0x0
AS-path 200 10, origin igp, localpref 100, pref-val 0, valid, internal, best,
select, active, pre 255
Not advertised to any peer yet
BGP routing table entry information of 10.11.0.0/16:
From: 10.1.4.1 (192.168.2.3)
Route Duration: 00h17m30s
Relay IP Nexthop: 10.1.4.1
Relay IP Out-Interface: GigabitEthernet1/0/0
Original nexthop: 10.1.1.1
Qos information : 0x0
AS-path 100 10, origin igp, localpref 100, pref-val 0, valid, internal, pre 255,
not preferred for router ID
Not advertised to any peer yet
The preceding command output shows that Router C selects the route 10.11.0.0/16 learned from
Router B because the router ID (192.168.2.2) of Router B is smaller than that (192.168.2.3) of
Router A.
from Router A and Router B.
Table 8-20 Route attribute comparison of the routes 10.11.0.0/16 learned from Router A and
Router B
Route Attribute
PrefVal
Local_Pref
Route type
AIGP
AS_Path
Origin
MED
Peer type
IGP cost
Cluster_List
Router ID
Scenario 2: The administrator of AS 65001 requires that ISP1 be active and ISP2 be backup for
the traffic to 10.11.0.0/16 and 10.22.0.0/16.
To meet the preceding requirements, run the default local-preference command on Router A
to increase the Local_Pref values of the routes learned from Router A. This configuration ensures
Issue 02 (2014-09-30)
Table 8-20 shows the route attribute comparison of the routes 10.11.0.0/16 learned
Route Learned
from Router A
0
100
Learned from a peer
-
100 10
IGP
-
IBGP
-
-
192.168.2.3
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Route Learned
from Router B
0
100
Learned from a peer
-
200 10
IGP
-
IBGP
-
-
192.168.2.2
8 BGP Configuration
Comparison
The same.
The same.
The same.
The same.
The same length.
The same.
The same.
The same.
The same.
The same length.
Route 10.11.0.0/16
learned from Router
B is optimal.
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