Cisco Systems virtual-dot11radio what for?

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Subject Author Date
virtual-dot11radio what for? patrick.weichmann 09-29-06
Posted by on September 29, 2006, 6:41 pm
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Hi, I would like to find out what the virtual-dot11radio is for and how
it can be used.

Also I am interested in knowing if I can change the native VLAN from 1
to 2 since we use foundry equipment and our native vlan is 2.

Regards,

pat


Posted by www.BradReese.Com on September 29, 2006, 7:13 pm
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Hi Pat,

The Virtual-Dot11Radio interface is used to indicate whether or not
there are any clients associated to a given access point or radio
within that access point.

When clients are associated, the Virtual-Dot11Radio interface is up;
when there are no clients associated, it shows down..

Use the infrastructure-client configuration interface command to
configure a virtual interface for a workgroup bridge client.

Use the no form of the command to disable the workgroup bridge client
virtual interface.

This is dynamically created when the AP is configured for
infrastructure client mode.

When debugging the virtual interface the management traffics are not
included.

http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_command_reference_chapter09186a008041757f.html#wp2455938

If the native VLAN on the switchport is configured as VLAN 12 and on
the AP, the native VLAN is configured as VLAN 1, then when the AP sends
a frame on its native VLAN to the switch, the switch considers the
frame as belonging to VLAN 12 since the frames from the native VLAN of
the AP are untagged.

This causes confusion in the network and results in connectivity
problems.

The same happens when the switchport forwards a frame from its native
VLAN to the AP.

The configuration of native VLAN becomes even more important when you
have a Repeater AP setup in your wireless network.

You cannot configure multiple VLANs on the Repeater APs. Repeater APs
support only the native VLAN.

Therefore, the native VLAN configuration on the root AP, the switch
port to which the AP is connected, and the Repeater AP, must be the
same.

Otherwise traffic through the switch does not pass to and from the
Repeater AP.

Using VLANs with Cisco Aironet Wireless Equipment:

http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_configuration_example09186a00801d0815.shtml

Hope this helps.

Brad Reese
BradReese.Com - Cisco Repair
http://www.bradreese.com/cisco-big-iron-repair.htm
1293 Hendersonville Road, Suite 17
Asheville, North Carolina USA 28803
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