Cisco 1811w Wifi suddenly stopped working
Posted on 2012-08-16
We have a Cisco 1811w installed in one of our branch office locations. We've had wireless setup on the dot11 0 interface working for a couple years now.
All of a sudden the SSID is no longer available. Unfortunatly we don't have the resource's to check if there's infact nothing coming out of the interface, for example beacons.
There were no router configuration change or physical changes that would have invoked this. The output of "show interface dot11radio 0" looks good except for "Last input 03:27:26, output 03:26:25, output hang never" I had issued a "clear counters" command on this interface maybe 45 minutes before grabbing the below output.
Dot11Radio0 is up, line protocol is up
Hardware is 802.11G Radio, address is 001f.6c98.7a70 (bia 001f.6c98.7a70)
Description: 2.4Ghz radio
MTU 1500 bytes, BW 54000 Kbit/sec, DLY 1000 usec,
reliability 180/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 03:27:26, output 03:26:25, output hang never
Last clearing of "show interface" counters 01:01:05
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 15
Queueing strategy: fifo
Output queue: 0/30 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 77 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
20 packets output, 3312 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
How do we test to see if this dot11radio interface is dead?