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Preserving VLAN ID in RSPAN

min.chen
Level 1
Level 1

‎11-01-2004 09:12 PM - edited ‎03-02-2019 07:40 PM

HELLO Everyone,

I am using Remote SPAN on couple of different Cisco Switches. (6509, 3550, and 4006) When I RSPAN a trunk port I noticed that all the packet's VLAN gets changed to the VLANID of the Remote VLAN. Is there any way, to preserve the original VLANID with RSPAN?

Thanks The current version of IOS I am using is the 12.1(20)EW .

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Prashanth Krishnappa
Cisco Employee
Cisco Employee

‎11-01-2004 09:33 PM

From documentation ..

"Because RSPAN traffic is carried across a network on an RSPAN VLAN, the original VLAN association of the mirrored packets is lost."

CAT3550

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12120ea2/3550scg/swspan.htm#wp1336466

CAT4K

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000/12_2_20/config/span.htm#wp1044012

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