Zte ZXR10 5900E Series User Manual page 63

Chapter 5 BGP Configuration
F 19 MED ATTRIBUTE
IGURE
The following is to set the MED value with the route-map com-
mand.
R3 configuration:
ZXR10_R3(config)#router bgp 300
ZXR10_R3(config-router)#neighbor 2.2.2.2 remote-as 100
ZXR10_R3(config-router)#neighbor 2.2.2.2 send-med
ZXR10_R3(config-router)#neighbor 2.2.2.2 route-map setmetricout out
ZXR10_R3(config-router)#neighbor 1.1.1.2 remote-as 300
ZXR10_R3(config-router)#exit
ZXR10_R3(config)#route-map setmetricout permit 10
ZXR10_R3(config-route-map)#set metric 120
R4 configuration:
ZXR10_R4(config)#router bgp 300
ZXR10_R4(config-router)#neighbor 3.3.3.1 remote-as 100
ZXR10_R4(config-router)#neighbor 3.3.3.1 send-med
ZXR10_R4(config-router)#neighbor 3.3.3.1 route-map setmetricout out
ZXR10_R4(config-router)#neighbor 1.1.1.1 remote-as 300
ZXR10_R4(config-router)#exit
ZXR10_R4(config)#route-map setmetricout permit 10
ZXR10_R4(config-route-map)#set metric 200
R2 configuration:
ZXR10_R2(config)#router bgp 400
ZXR10_R2(config-router)#neighbor 4.4.4.2 remote-as 100
ZXR10_R2(config-router)#neighbor 4.4.4.2 send-med
ZXR10_R2(config-router)#neighbor 4.4.4.2 route-map setmetricout out
ZXR10_R2(config-router)#exit
ZXR10_R2(config)#route-map setmetricout permit 10
ZXR10_R2(config-route-map)#set metric 50
In the following contents, force R1 to compare the Metric val-
ues with the bgp always-compare-med command. The Metric
value of the R2 is smaller than that of the R3. Therefore, for the
180.10.0.0 update, the R1 selects the R2 rather than the R3.
R1 configuration:
ZXR10_R1(config)#router bgp 100
ZXR10_R1(config-router)#neighbor 2.2.2.1 remote-as 300
ZXR10_R1(config-router)#neighbor 3.3.3.2 remote-as 300
ZXR10_R1(config-router)#neighbor 4.4.4.1 remote-as 400
ZXR10_R1(config-router)#bgp always-compare-med
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