BGP Nexthop Resolution w/ Colored Routes (Flex-Algo) in IOS-XE

[Fatih K]

Hello,
I am trying to verify in my lab that I can configure a L3VPN on my IOS-XE device (ASR1k), which can utilize a specific flex-algo topology. For this reason, VPNv4 routes are propagated via extended-community color, however BGP NH resolution is still using the Flex-Algo 0, which I can confirm by looking at the transport label value.

After digging into many documents, I couldn't find any configuration command that is missing in my lab. IOS-XR, JunOS, and SROS have those features where I can configure the desired BGP NH resolution method, but I couldn't find something similar for IOS-XE. Can you please help me if this is supported?

Regards,

Fatih

[Harold Ritter]

Hi @Fatih K ,

You are missing the following command:

router isis ipls

router-id Loopback0

This should fix the issue.

Regards,

[Fatih K]

Thanks a lot @Harold Ritter 
We overlooked on this in the configuration. It is working now.

[Harold Ritter]

You are very welcome @Fatih K and thanks for the feedback