Huawei Quidway NetEngine80E Configuration Manual page 939

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Router C selects the routes advertised by ISP1 because Router B did not advertise the routes
learned from ISP2 to Router C.
Scenario 3: The requirements of the administrator of AS 65001 are as follows:
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To meet the preceding requirements, ensure that AS 65001 selects the route 10.11.0.0/16 learned
from Router A and the route 10.22.0.0/16 learned from Router B. Detailed configurations are
as follows:
Figure 8-15 Local_Pref-based BGP route selection networking (1)
Set Local_Pref:
120 for 10.11.0.0/16
80 for 10.22.0.0/16
In this situation, different Local_Pref values are required for the routes learned from the same
ISP. To configure different Local_Pref values for the routes learned from the same ISP, configure
route-policies. Detailed configurations are as follows:
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Issue 02 (2014-09-30)
ISP1 is active and ISP2 is backup for the traffic to 10.11.0.0/16.
ISP2 is active and ISP1 is backup for the traffic to 10.22.0.0/16.
ISP1
AS 100
RouterA
To: 11.0.0.0/8
Configurations on Router A
#
bgp 65001
#
ipv4-family unicast
peer 10.1.1.1 route-policy rp1 import
named rp1 to the routes learned from 10.1.1.1 and use rp1 to modify the
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Internet
10.11.0.0/16
10.22.0.0/16
EBGP EBGP
Client Network
AS 65001
To: 11.0.0.0/8
To: 22.0.0.0/8
IBGP
IBGP
RouterC
8 BGP Configuration
ISP2
AS 200
Set Local_Pref:
200 for 10.22.0.0/16
60 for 10.11.0.0/16
RouterB
To: 22.0.0.0/8
IBGP
Best route
//Apply import policy
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