01-07-2013 02:42 PM - edited 03-07-2019 10:57 AM
I have an 891w that started acting up recently. Radio dot11 0 is reporting its a b radio. When it is actually an n 2.4 radio. Of course that radio is not allowing any clients to connect to it at this time. I have tried updating the firmware to the latest, tried a hardware reset but still a nogo. Any other ideas out there?
sh interface output.
Dot11Radio0 is up, line protocol is down
Hardware is 802.11B Radio, address is 0000.0000.0000 (bia 0000.0000.0000)
MTU 1500 bytes, BW 11000 Kbit/sec, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/3000/0/0 (size/max/drops/flushes); Total output drops: 2
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 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
0 packets output, 0 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
Dot11Radio0.1 is up, line protocol is down
Hardware is 802.11B Radio, address is 0000.0000.0000 (bia 0000.0000.0000)
MTU 1500 bytes, BW 11000 Kbit/sec, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1.
ARP type: ARPA, ARP Timeout 04:00:00
Keepalive set (10 sec)
Last clearing of "show interface" counters never
sh ver
Cisco IOS Software, AP801 Software (AP801-K9W7-M), Version 15.2(2)JA, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Thu 23-Aug-12 06:16 by prod_rel_team
ROM: Bootstrap program is AP801 boot loader
BOOTLDR: AP801 Boot Loader (AP801-BOOT-M) Version 12.4(23c)JX, RELEASE SOFTWARE (fc1)
Crisis-Whitby-ap uptime is 1 hour, 41 minutes
System returned to ROM by power-on
System image file is "flash:/ap801-k9w7-mx.152-2.JA/ap801-k9w7-mx.152-2.JA"
Last reload reason:
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States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
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Importers, exporters, distributors and users are responsible for
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If you require further assistance please contact us by sending email to
cisco AP801AGN-A-K9 (PowerPC 8343) processor (revision B0) with 49142K/16384K bytes of memory.
Processor board ID FTX161683HL
PowerPC 8343 CPU at 400Mhz, revision number 0x0031
Last reset from power-on
1 Gigabit Ethernet interface
2 802.11 Radios
32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 64:00:F1:CF:10:CA
Part Number : 73-11027-11
PCA Assembly Number : 800-28808-11
PCA Revision Number : B0
PCB Serial Number : FOC161271MJ
Top Assembly Part Number : 800-29576-05
Top Assembly Serial Number : FTX161683HL
Top Revision Number : B0
Product/Model Number : AP801AGN-A-K9
Configuration register is 0xF
01-07-2013 03:16 PM
Radio dot11 0 is reporting its a b radio. When it is actually an n 2.4 radio.
Dot11Radio0 is 2.4 Ghz. As to the "n", it's not. You can only enable 802.11n on the 5.0 Ghz.
I have tried updating the firmware to the latest
You're not running the "latest" firmware. JA has a dot1q trunk bug and has been fixed in JB.
Post the config of your AP.
01-07-2013 03:21 PM
Here is the dot11 radio from a working 891w, must be where my confusion is coming from.
Dot11Radio0 is up, line protocol is up
Hardware is 802.11N 2.4GHz Radio
I will update to JB see if it makes a difference.
01-09-2013 06:07 AM
Firmware update did nothing to resolve the issue. Only solution so far that has worked was removing the power from the router completely and plugging it back in.
This seems to have resolved the issue for now. I will monitor the issue to see if it pops up again.
01-09-2013 02:15 PM
I've got some 890W and I've never seen something like this.
01-10-2013 05:03 AM
Me either, I have 9 others running without issue. This one just decided to start acting up.
I will just have to monitor it to see if it comes back.
I am thinking it was either a power blip (which should not happen as its on a UPS) or one of the users at the location repeatedly unplugged it to fix some issue they thought it would solve.
01-10-2013 01:59 PM
Just RMA it.
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