bfd with Nexus 7k and ASR 1001

[juan-ruiz]

All,

I'm working with an existing Nexus 7K BGP config running BFD and an operational peer to another Nexus 7k on this network.

I'm adding a Cisco ASR 1001 into the BGP peering and all appears to be fine but I need some direction on the BFD authentication configuration to match the Nexus 7k configuration.

On the Nexus 7k interface the following line is configured

bfd authentication Keyed-SHA1 key-id 1 hex-key 12345678909876543212

On the ASR I need the equivalent line configured.

The part I'm stuck in is trying to find a match option for the hex-key during the key chain configuration part but all I get is a key-string option

I'm using this document to configure the ASR side as the Nexus is already configured.

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bfd/configuration/xe-16-6/irb-xe-16-6-book/irb-bfd-shop-auth.html

Any direction is greatly appreciated!

[Reza Sharifi]

Hi,

The config on the ASR should be something like this under the interface or sub-interface

bfd interval 300 min_rx 300 multiplier 3

HTH

[juan-ruiz]

Hi Reza,

Thanks for the response how about the authentication portion? 

[Reza Sharifi]

Hi,

Have not done authentication with BFD before but maybe something like this to match the key string with the Nexus

evice> enable
Device# configure terminal
Device(config)# key chain chain1
Device(config-keychain)# key 1
Device(config-keychain-key)# key-string 12345678909876543212
Device(config-keychain-key)# end

 HTH