Huawei Quidway NetEngine80E Configuration Manual page 941

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
# Display detailed information about the route 10.22.0.0/16 on Router A.
[RouterA] display bgp routing-table 10.22.0.0
BGP local router ID : 192.168.2.3
Local AS number : 65001
Paths:
BGP routing table entry information of 10.22.0.0/16:
From: 10.1.3.2 (192.168.2.2)
Route Duration: 00h20m12s
Relay IP Nexthop: 10.1.3.2
Relay IP Out-Interface: GigabitEthernet1/0/3
Original nexthop: 10.1.2.1
Qos information : 0x0
AS-path 200 10, origin igp, localpref 200, pref-val 0, valid, internal, best,
select, active, pre 255
Advertised to such 1 peers:
BGP routing table entry information of 10.22.0.0/16:
From: 10.1.1.1 (192.168.2.5)
Route Duration: 00h19m40s
Direct Out-interface: GigabitEthernet1/0/1
Original nexthop: 10.1.1.1
Qos information : 0x0
AS-path 100 10, origin igp, localpref 80, pref-val 0, valid, external, pre 255,
not preferred for Local_Pref
Not advertised to any peer yet
The preceding command output shows that two routes 10.22.0.0/16 are available in the BGP
routing table of Router A and that the route with next hop address 10.1.2.1 is selected because
its Local_Pref (200) is greater than the Local_Pref (80) of the route with next hop address
10.1.1.1.
Table 8-22
and Router B.
Table 8-22 Route attribute comparison of the routes 10.22.0.0/16 learned from ISP1 and
Router B.
Route Attribute
PrefVal
Local_Pref
The route with next hop address 10.1.1.1 is not optimal, and therefore, it is not advertised to
Router B and Router C. In addition, the route 10.11.0.0/16 with next hop address 10.1.2.1 is not
optimal on Router B, and therefore, Router B does not advertise this route to Router A and
Router C. As a result, only one route 10.11.0.0/16 with next hop address 10.1.1.1 is available in
the BGP routing table of Router A.
# Display the routing table of Router B.
[RouterB] display bgp routing-table
BGP Local router ID is 192.168.2.2
Issue 02 (2014-09-30)
2 available, 1 best, 1 select
10.1.1.1
shows the route attribute comparison of the routes 10.22.0.0/16 learned from ISP1
Route Learned
from ISP1
0
200
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Route Learned
from Router B
0
80
8 BGP Configuration
Comparison
The same.
Route 10.22.0.0/16
learned from ISP1 is
optimal.
916