UniDirectional Link Failure Detection without UDLD

[komure]

Hi,

Does anyone know the network appliance could detect uni-directional link failure of SFP+ without UDLD?

I tried the test with PA-5060 and Juniper-EX,

but SFP+s kept link-up cause TX might continue to shot laser when RX came not to receive laser from peer.

I though it is general problem as SFP+ and UDLD has been defined.

But our customer said it could detect uni-directional link failure between Juniper SRX and Cisco ASA without UDLD.

I'm not sure how those FWs could detect it.

Could you please tell me if you know a helpful knowledge?

Regards,

[hyadavalli]

Hello Komure,

I'm not quite sure what's your questions is.

As of my understanding UDLD is cisco propreitary protocol.

Regards,

Hari Yadavalli