Connect router to FEX port

[Olle Johansson]

For a couple of years ago I heard from a system engineer at Cisco that it is not recomended to connect a router to a FEX port if the router are running a routing protokoll to a upstream router. It was something about connection it to FEX could distrupt the routing protocoll.

Does anyone have any input about this?

Or is it OK to run a router with BGP and OSPF over a FEX?

Thanks

//Olle

[nazimkha]

It is just because of the queuing support for FEX host ports i.e the routing protocol packets could not be prioritized and there could be routing protocol flaps.

What is the series of the Nexus parent switch ?
I know Nexus 7000 supports, router behind FEX since release 6.2.2

Regards,
Nazim
Please do not forget to rate the post

[Olle Johansson]

Thank you!
We use Nexus 5596 in our DC.

Is there any know issues with running a VoIP/SIP/RTP via FEX?