SPAN session limit - NAM

Unanswered Question
Mar 27th, 2009
User Badges:

hi,


I would like to understand the SPAN session limitation on Cat65K.


I have NAM in slot 3 of Cat65K. When I do show monitor session all, the partial return is



Session 3

---------

Type : Service Module Session

Modules allowed : 1-9

Modules active : 1,7

BPDUs allowed : Yes


Module 1 is FWSM and 7 is the IDSM. Are these sessions default. What is it used for ? Can it be deleted.


What is the SPAN session limit on Cat65K. Do I have to deleted existing SPAN session to create new one if the limit is reached. Is the session limitation per NAM data port. Can both the NAM data ports be used simultaneously. Can there be two sessions per singe NAM data port. ?

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
Joe Clarke Fri, 03/27/2009 - 13:31
User Badges:
  • Cisco Employee,
  • Hall of Fame,

    Founding Member

This explains the limits on SPAN, RSPAN, and ERSPAN:


http://www.cisco.com/en/US/docs/routers/7600/ios/12.2SXF/configuration/guide/span.html#wp1102614


Essentially, you only have two available local SPAN sessions. It doesn't look like you have either Local Session configured. But you are using the service module SPAN reflector feature. You may need to disable this if you're eating up a required SPAN session. See http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015c612.shtml#FWSM for more details. If you reach your limit of two Local Sessions, you must delete one before you can configure a new one.


Yes, both data ports on the NAM can be used simultaneously. No, you can only have one SPAN session per port.

Actions

This Discussion