Huawei Quidway NetEngine80E Configuration Manual page 971

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
From: 10.1.2.2 (10.1.2.2)
Route Duration: 01h20m38s
Direct Out-interface: GigabitEthernet0/0/0
Original nexthop: 10.1.2.2
Qos information : 0x0
AS-path 65001, origin igp, pref-val 0, valid, external, best, select, active, pre
255
Advertised to such 2 peers:
BGP routing table entry information of 1.1.1.9/32:
From: 10.1.4.2 (10.1.1.2)
Route Duration: 01h16m28s
Direct Out-interface: GigabitEthernet0/0/2
Original nexthop: 10.1.4.2
Qos information : 0x0
AS-path 65001, origin igp, MED 100, pref-val 0, valid, external, pre 255, not
preferred for MED
Not advertised to any peer yet
The preceding command output shows that two routes 1.1.1.9/32 are available in the BGP routing
table of Router B and that only the route with next hop address 10.1.2.2 is selected as the optimal
route.
Table 8-30
D.
Table 8-30 Attribute comparison of the routes learned from Router C and Router D
Route Attribute
PrefVal
Local_Pref
Route type
AIGP
AS_Path
Origin
MED
Figure 8-23
route selection, BGP uses the default value (0) as the MED of the route. Therefore, this route is
Issue 02 (2014-09-30)
10.1.2.2
10.1.4.2
describes the attribute comparison of the routes learned from Router C and Router
Route Learned
from Router C
0
-
Learned from a peer
-
65001
IGP
100
shows that the route learned from Router D does not carry the MED value. During
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Route Learned
from Router D
0
-
Learned from a peer
-
65001
IGP
-
8 BGP Configuration
Comparison
The same.
The same.
The same.
The same.
The same length.
The same.
The route learned
from Router D
carries no MED
value, and therefore,
the default value (0)
is used.
The route learned
from Router D is
optimal.
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