[c-nsp] Nexus 7k netflow on SVIs / CLI hangs

[Phil Mayers]

All,

I have a TAC case open on this, but it's been a couple of days without a 
reply so far. I'm wondering if anyone here can comment.

We've just turned up a pair of Nexus 7009 routers running 5.2(4) and 
8-port 10G M1 linecards. They're doing IPv4/IPv6 in the default VRF, as 
well as in several L3VPN.

I ran into a really weird problem trying to attach a flow monitor to an 
SVI interface (which we use for "style" parity). Basically, the command 
didn't seem to "take" properly - it was absent from the NVGEN although 
the "show flow" commands confirmed it. Worse, trying to put a 2nd flow 
monitor on (e.g. IPv6 ingress, egress) caused a CLI hang - I had to 
Ctrl+C the command. At that point, the box was really confused, and 
attempts to "no int VlanXX" cause a long pause, followed by a "Service 
not responding" error message.

Does anyone have Netflow on SVIs working on this platform/NX-OS version?