topic Line protocol on Interface Virtual-Dot11Radio1, changed to down in Wireless

Line protocol on Interface Virtual-Dot11Radio1, changed to down

mheidemann — Sun, 04 Jul 2021 17:06:29 GMT

Can someone tell me what this entry in the log indicates? Is there documentation that explains these and similar log entries?

Re: Line protocol on Interface Virtual-Dot11Radio1, changed to d

dixho — Tue, 26 Oct 2004 20:56:17 GMT

Virtual dot11radio interface is a virtual interface created by IOS for bridge and repeater communication. When a repeater or bridge tries to associate, the AP/bridge brings up the virtual dot11radio interface. When all repeaters or bridges disassociate from the AP/bridge, the AP/bridge brings down the virtual dot11radio interface. At the same time, the AP/bridge logs the message.

There is a common problem on Aironet Extension. If you enable Aironet Extension, Cisco AP/bridge may misidentify other vendor equipment as a repeater. If you do not have repeater or bridge and you do not use Cisco propietary feature, like CMIC, CMKIP, CCKM, or etc, you should disable Aironet Extension.

Re: Line protocol on Interface Virtual-Dot11Radio1, changed to d

mheidemann — Wed, 27 Oct 2004 18:28:12 GMT

Thank you for your help. This is interesting and it leads to more questions. The majority of of my wireless clients in this area are 350 series work group bridges. We use these for printers and attach a single HP jet direct box behind each WGB. The Jet Direct boxes do appear as repeaters on the association page and disappear when I disable Aironet extensions. I do notice that after I disable extensions and do a show interface, I still see several sub interfaces. See below. Is it normal to still see a sub interface for every WGB? My other question would be why do I still see them going up/down on intermittent basis?

sh int summary

*: interface is up

IHQ: pkts in input hold queue IQD: pkts dropped from input queue

OHQ: pkts in output hold queue OQD: pkts dropped from output queue

RXBS: rx rate (bits/sec) RXPS: rx rate (pkts/sec)

TXBS: tx rate (bits/sec) TXPS: tx rate (pkts/sec)

TRTL: throttle count

Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL

---------------------------------------------------------------------

* BVI1 0 0 0 0 0 0 0 0 0

* Dot11Radio0 0 0 0 16348 17000 36 185000 199 0

* FastEthernet0 0 0 0 0 50000 66 10000 18 10

* Virtual-Dot11Radio0 0 0 0 0 0 0 0 0 0

* Virtual-Dot11Radio1 0 0 0 0 0 0 0 0 0

* Virtual-Dot11Radio2 0 0 0 0 0 0 0 0 0

* Virtual-Dot11Radio3 0 0 0 0 0 0 0 0 0

* Virtual-Dot11Radio4 0 0 0 0 0 0 0 0 0

* Virtual-Dot11Radio5 0 0 0 0 0 0 0 0 0

* Virtual-Dot11Radio6 0 0 0 0 0 0 0 0 0

* Virtual-Dot11Radio7 0 0 0 0 0 0 0 0 0

NOTE:No separate counters are maintained for subinterfaces

Hence Details of subinterface are not shown