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HELP CONFIGURATION LAYER 2 INTERFACE IOS XE ASR 903

Hello guys

I have a cisco ASR 903 router (IOS XE 15.4(3)S3) and i can't do something...

This's our scenary (you could see it in attached image):

The ASR sends packets by Layer3 interface Gi0/0/0, which is connected to a device that limit BW. The ousite port of this device returns to ASR's interface Gi0/0/2 (Layer 2) and then the ASR forwards the packet to ISP by interface Gi0/0/5 (Layer 2).


MY CONFIGURATION on ASR-903

interface GigabitEthernet0/0/0
 description ASR-to-BW_LIMIT_DEVICE
 ip address 10.10.10.129 255.255.255.128

interface GigabitEthernet0/0/2
 description BW_LIMIT_DEVICE-to-ASR
 service instance 2 ethernet
  encapsulation default
  bridge-domain 20

 

interface GigabitEthernet0/0/5
 description ASR-to-ISP
 service instance 2 ethernet
  encapsulation default
  bridge-domain 20

 

For outbound traffic works perfect. The problem happens when the traffic is coming back from ISP to ASR. For some reason, inbound traffic flows directly from interface Gi0/0/5 to Gi0/0/0. It means that inbound traffic doesn't flow trough Gi0/0/2 to reach Gi0/0/0. 

 

Do you know about this situation?

Do you think that i need another configuration ?

Regards

:)

Everyone's tags (1)
2 REPLIES 2
Cisco Employee

Do you have any BDI created

Do you have any BDI created in this router?. Can you share the configuration from the router?.

Yes we have one, for example.

Yes we have one, for example...

interface BDI20
 no ip address
end

 

I attached the configuration.

Regards :)

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