VLAN Mapping on 6500

Unanswered Question
Sep 9th, 2009
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Has anyone had success with configuring VLAN mapping on a Cat6500? I have tried to enable it on a single port, but when I enable it multiple ports are affected. I receive the following notice when enabling on a port:

VLAN mapping is also changed on these switch ports: 1/1,1/2,1/3,1/4,1/5,1/6,1/7,1/8,1/9,1/11,1/12.

Is there a Cat6500 IOS version that allows VLAN mapping on a per-port basis and does not affect other ports?



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jbrenesj Wed, 09/09/2009 - 09:50
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The message you are receiving is correct. When configuring vlan mapping on

an interface the configuration is applied to all ports in a port group. The

ports in a port group depend on the hardware module that you are

configuring, for example an 24 port WS-X6724-SFP module has 2 port groups

with ports 1-12 in group 1 and 13-24 in group 2. If you configure vlan

mapping for port 1 this automatically configures the mapping for all the

interfaces in that port group however it does not enable the vlan


By default vlan translation is disabled for all interfaces in a group so

only interfaces in that group that have the "switchport vlan mapping

enable" command will use the vlan mapping configuration. The other

interface you have configured, Gig 6/23 has the vlan mapping configured but

vlan mapping is not enabled under the interface using the "switchport vlan

mapping enable" command therefore it will not be affected.


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