[c-nsp] SPAN on 6500
Tim Stevenson
tstevens at cisco.com
Thu Jan 13 12:51:15 EST 2011
Arg, I've done it again. Don't bother clicking, this link is internal
to cisco. Sorry about that.
The basic information you need though is in the user docs:
http://www.cisco.com/en/US/docs/switches/datacenter/sw/4_0/nx-os/system_management/configuration/guide/sm_span.html#wp1184503
Hope that helps, sorry for the confusion.
Tim
At 08:42 AM 1/13/2011, Tim Stevenson muttered:
>Hi Chuck,
>You're correct, if you first configure the span dest as a .1q trunk,
>the SPANned traffic will go out vlan tagged (regardless of whether
>the original traffic actually had a vlan tag or not).
>
>You might want to check this (old but still relevant) doc on cco:
>http://bock-bock.cisco.com/~tstevens/White_Papers/virtual-span/virtual-span.pdf
>
>Hope that helps,
>Tim
>
>
>
>At 08:16 AM 1/13/2011, Church, Charles muttered:
>
>>All,
>>
>>
>>
>> I'm running into some issues with SPAN session limitations
>>on 6500 (SXI on a VSS pair). After reading this doc:
>>
>><http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configu>http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configu
>>ration/guide/span.html
>>
>>
>>
>>I'm lead to believe that if I make the destination interface a trunk, a span
>>source of say VLANs 10 and 20 will leave the destination port with those
>>VLAN tags intact. This appears to match the 'encapsulation replicate' that
>>is present on the 3560s. My end goal is to use 2 3560 switches off of the
>>6500s to distribute SPAN sessions to 4 separate entities. Switch A will get
>>a SPAN session off of the 6500 consisting of VLAN groups X and Y. Switch B
>>will get a SPAN session off of the 6500 consisting of VLAN groups X and Z.
>>Switch A will span VLAN group X to a certain destination port, and group Y
>>to another. Switch B will do a similar thing with VLAN groups X and Z. I'm
>>assuming normal local SPAN. I think the relies on the SPAN off of the 6500
>>to keep the VLAN tags intact. Can anyone confirm if my assumption is
>>correct?
>>
>>
>>
>>Thanks,
>>
>>
>>
>>Chuck
>>
>>
>>
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>
>
>
>
>Tim Stevenson, tstevens at cisco.com
>Routing & Switching CCIE #5561
>Distinguished Technical Marketing Engineer, Cisco Nexus 7000
>Cisco - http://www.cisco.com
>IP Phone: 408-526-6759
>********************************************************
>The contents of this message may be *Cisco Confidential*
>and are intended for the specified recipients only.
>
Tim Stevenson, tstevens at cisco.com
Routing & Switching CCIE #5561
Distinguished Technical Marketing Engineer, Cisco Nexus 7000
Cisco - http://www.cisco.com
IP Phone: 408-526-6759
********************************************************
The contents of this message may be *Cisco Confidential*
and are intended for the specified recipients only.
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