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RSPAN through Nexus

CSCO10662744_2
Level 4
Level 4

Does anyone know if Nexus (more specifically, Nexus 9504) supports RSPAN?

 

One of our customers has Cat 3K’s as access switches, and Nexus 9504’s as core.

I have a need to build/enable RSPAN, so that I can get packet capture from any source, anywhere.

 

Problem is the NXOS doesn’t seem to support the "remote-span" command under vlan, and I can’t find any NXOS config doc that says it’s supported.

TIA

3 Replies 3

Mark Malone
VIP Alumni
VIP Alumni

From what I remember and looking at the 9k docs again they only support span and erspan, no rspan

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/6-x/system_management/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_System_Management_Configuration_Guide/sm_14span.html

Thank you Mark for confirming no RSPAN support on NXOS.

If you had a similar need, how would you solve this problem?

Is there actually a solution?

there is rspan on the 7Ks and I think 6s too but the 9ks are stripped down NX-OS there not a full feature set that's why there a lot cheaper too than 7s but missing some critical features still

could you not use a local span instead on each end rather than rspan across the network or layer 3 erspan if you have to go across the network