[c-nsp] 6500 with SUP720 SPAN questions, Again...

Tim Stevenson tstevens at cisco.com
Thu Mar 17 16:29:03 EST 2005


Only two are supported today (more tx-direction only sessions are on the 
roadmap, but far out), and NAM does not buy you any additional sessions.

But, depending on the s/w ver you are running (18SXD or later), you can 
configure multiple span dest ports like this:

interface GigabitEthernet1/1
  switchport
  switchport trunk encapsulation dot1q
  switchport trunk allowed vlan 10
  switchport mode trunk
  switchport nonegotiate

interface GigabitEthernet1/2
  switchport
  switchport trunk encapsulation dot1q
  switchport trunk allowed vlan 11
  switchport mode trunk
  switchport nonegotiate

interface GigabitEthernet1/3
  switchport
  switchport trunk encapsulation dot1q
  switchport trunk allowed vlan 12
  switchport mode trunk
  switchport nonegotiate

interface GigabitEthernet1/4
  switchport
  switchport trunk encapsulation dot1q
  switchport trunk allowed vlan 13
  switchport mode trunk
  switchport nonegotiate


And then configure a single SPAN session like so:

mon ses 1 source vlan 10 - 13
mon ses 1 dest int gig 1/1 - 4

This ends up spanning just vlan 10 traffic to int gig 1/1, just vlan 11 
traffic to int gig 1/2, etc.


HTTH,
Tim



At 11:39 AM 3/17/2005, Dan Benson declared:
>Hello, and sorry for the repeat question:
>
>I have a 6500 with a sup720 running in IOS mode that I am in dire need
>to be able to have more then 2 monitoring sessions on.  From what it
>seems to me at this point, I can have up to 2 sessions, monitoring rx on
>many ports or tx/rx on one,  and send them to many monitors ports, but I
>can have only 2.  Is there any way to increase this number?  Would
>buying a NAM module allow me to increase the number of SPAN sessions and
>or increase my number of monitor TX/RX ports. I thank you all again for
>your insight.   //db
>
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Tim Stevenson, tstevens at cisco.com
Routing & Switching CCIE #5561
Technical Marketing Engineer, Catalyst 6500
Cisco Systems, http://www.cisco.com
IP Phone: 408-526-6759
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