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Dot11Radio interface up, Line protocol down - Cisco 2811

son000003
Level 1
Level 1

Hi, 

I have a pretty weird problem that I havent been able to figure out. After running for some time, the wifi AP would crash and no other connection can be made to it; Only after restarting the router will this problem go away. Doing a show interface Dot11Radio 0/2/1 description gave the following output.

Interface: Do0/2/1 Status: Up Protocol: Down

The follwing is from running-cfg

boot-start-marker
boot system flash:c2800nm-advsecurityk9-mz.151-4.M12a.bin
boot-end-marker

dot11 ssid Wifi-5Ghz
authentication open
authentication key-management wpa
guest-mode
wpa-psk ascii 7 15033F09173E7F707872

ip dhcp pool Wireless5Ghz
network 192.168.0.128 255.255.255.128
default-router 192.168.0.129
dns-server 192.168.20.101

interface Dot11Radio0/2/1
ip address 192.168.0.129 255.255.255.128
ip nat inside
ip virtual-reassembly in
!
encryption mode ciphers aes-ccm tkip
!
ssid Wifi-5Ghz
!
speed basic-6.0 9.0 basic-12.0 18.0 basic-24.0 36.0 48.0 54.0
station-role root
!

sh ver

Cisco IOS Software, 2800 Software (C2800NM-ADVSECURITYK9-M), Version 15.1(4)M12a

Edit: Add version info

2 Replies 2

Hi

I have had this issue before, try to upgrade the IOS. 




>> Marcar como útil o contestado, si la respuesta resolvió la duda, esto ayuda a futuras consultas de otros miembros de la comunidad. <<

Hi,

The router already have the latest version of the IOS. 

sh run

boot-start-marker
boot system flash:c2800nm-advsecurityk9-mz.151-4.M12a.bin
boot-end-marker

sh ver

Cisco IOS Software, 2800 Software (C2800NM-ADVSECURITYK9-M), Version 15.1(4)M12a

Per the Cisco download page, 15.1.4M12a is the latest IOS available.

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