Huawei Quidway NetEngine80E Configuration Manual page 976

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Original nexthop: 10.1.5.2
Qos information : 0x0
AS-path 100, origin igp, MED 0, localpref 100, pref-val 0, valid, internal, best,
select, active, pre 255
Not advertised to any peer yet
BGP routing table entry information of 1.1.1.9/32:
From: 10.1.2.2 (10.1.2.2)
Route Duration: 00h00m39s
Relay IP Nexthop: 10.1.1.2
Relay IP Out-Interface: GigabitEthernet0/0/1
Original nexthop: 10.1.6.2
Qos information : 0x0
AS-path 100, origin igp, MED 0, localpref 100, pref-val 0, valid, internal, pre
255, IGP cost 2, not preferred for IGP cost
Not advertised to any peer yet
The preceding command output shows that the route with next hop address 10.1.6.2 is ignored
because its IGP cost is larger than that of the other route.
comparison of the routes learned from Router A and Router B.
Table 8-31 Attribute comparison of the routes learned from Router A and Router B.
Route Attribute
PrefVal
Local_Pref
Route type
AIGP
AS_Path
Origin
MED
Peer type
IGP cost
Issue 02 (2014-09-30)
Route Learned
from Router A
0
100
Learned from a peer
-
100
IGP
0
IBGP
-
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Table 8-31 describes the attribute
Route Learned
from Router B
0
100
Learned from a peer
-
100
IGP
0
IBGP
2
8 BGP Configuration
Comparison
The same.
The same.
The same.
The same.
The same length.
The same.
The same.
The same.
The route learned
from Router A is
optimal.
NOTE
If a BGP route carries
no IGP cost value,
BGP considers its IGP
cost to be 0. If no IGP
routes are used during
BGP peer relationship
establishment or the
costs of used IGP
routes are 0, the IGP
cost is not displayed in
the display bgp
routing-table ip-
address command
output.
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