[c-nsp] SPAN on Nexus 5k

Виктор Моисеев vim at psu.ru
Fri Apr 5 03:57:30 EDT 2013

We are using something like this on 5K.
We have some VPC to monitor on pair of 5Ks.

monitor session 1 
  source interface port-channel1012 rx
  destination interface Ethernet1/40
  no shut

interface Ethernet1/40
  switchport monitor

Are you sure that vlan9 traffic actually flows through 5k(B)?
>From your picture I see 4506 single-homed to 5k(A) only.
If so, you might want to use RemoteSPAN.
If 4506 dual-homed to both NXs via VPC
you can monitor port-channels on both of N5K.

Best regards,
Victor Moiseev

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Scott Voll
> Sent: Friday, April 05, 2013 2:31 AM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] SPAN on Nexus 5k
> I'm trying to setup a SPAN on a 5k and it's not working as I would have
> thought.
> Topology:
> Servers on vlan 9 connected to 4506E <-10g-> 5k(A) <-Peer Link-> 5k(B).
> I'm trying to setup a monitor session on 5k(B) that monitors vlan 9 but
> I'm
> not getting any traffic.
> Vlan 9 is allowed on all the trunks.
> Am I missing something here?
> Thanks
> Scott
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