AIR-AP1832I-H-K9AP突然掉线不能上线，红绿黄灯轮流闪烁

[hjlin]

用console线进去不断的重复刷以下信息，请问大家知道是什么问题吗？

[*01/21/2021 18:53:43.6408] CAPWAP State: Discovery
[*01/21/2021 18:53:43.6408] Discovery Request sent to 192.168.20.254, discovery type STATIC_CONFIG(1)
[*01/21/2021 18:53:43.6408] Got WLC address 10.3.101.9 from DHCP.
[*01/21/2021 18:53:43.6408] IP DNS query for CISCO-CAPWAP-CONTROLLER.suntakpcb.com
[*01/21/2021 18:53:43.6408] DNS resolved CISCO-CAPWAP-CONTROLLER.suntakpcb.com
[*01/21/2021 18:53:43.6408] DNS discover IP addr: 192.168.32.1
[*01/21/2021 18:53:43.6408] Discovery Request sent to 192.168.20.254, discovery type STATIC_CONFIG(1)
[*01/21/2021 18:53:43.6408] Discovery Request sent to 10.3.101.9, discovery type DHCP(2)
[*01/21/2021 18:53:43.6408] Discovery Request sent to 192.168.32.1, discovery type DNS(3)
[*01/21/2021 18:53:43.6508] Discovery Request sent to 255.255.255.255, discovery type UNKNOWN(0)
[*01/21/2021 18:53:43.6508] Discovery Response from 192.168.20.254
[*01/21/2021 18:53:43.6508] Discovery response from MWAR ''running version 0.0.0.0 is rejected.
[*01/21/2021 18:53:43.6508] Failed to decode discovery response.
[*01/21/2021 18:53:43.6508] CAPWAP SM handler: Failed to process message type 2 state 2.
[*01/21/2021 18:53:43.6508] Failed to handle capwap control message from controller - status 4
[*01/21/2021 18:53:43.6508] Failed to process unencrypted capwap packet 0x27d4000 from 192.168.20.254
[*01/21/2021 18:53:43.6508] Failed to send message to CAPWAP state machine, msgId 0
[*01/21/2021 18:53:43.6508] Failed to send capwap message 0 to the state machine. Packet already freed.
[*01/21/2021 18:53:43.6508] IPv4 wtpProcessPacketFromSocket returned 4
[*01/21/2021 18:53:43.6508] Discovery Response from 192.168.20.254
[*01/21/2021 18:53:43.6508] Discovery response from MWAR ''running version 0.0.0.0 is rejected.
[*01/21/2021 18:53:43.6508] Failed to decode discovery response.
[*01/21/2021 18:53:43.6508] CAPWAP SM handler: Failed to process message type 2 state 2.
[*01/21/2021 18:53:43.6508] Failed to handle capwap control message from controller - status 4
[*01/21/2021 18:53:43.6508] Failed to process unencrypted capwap packet 0x27fb000 from 192.168.20.254
[*01/21/2021 18:53:43.6508] Failed to send message to CAPWAP state machine, msgId 0
[*01/21/2021 18:53:43.6508] Failed to send capwap message 0 to the state machine. Packet already freed.
[*01/21/2021 18:53:43.6508] IPv4 wtpProcessPacketFromSocket returned 4
[*01/21/2021 18:53:43.6508] Discovery Response from 10.3.101.9
[*01/21/2021 18:53:43.6508] Discovery response from MWAR ''running version 0.0.0.0 is rejected.
[*01/21/2021 18:53:43.6508] Failed to decode discovery response.
[*01/21/2021 18:53:43.6508] CAPWAP SM handler: Failed to process message type 2 state 2.
[*01/21/2021 18:53:43.6508] Failed to handle capwap control message from controller - status 4
[*01/21/2021 18:53:43.6508] Failed to process unencrypted capwap packet 0x27fd000 from 10.3.101.9
[*01/21/2021 18:53:43.6508] Failed to send message to CAPWAP state machine, msgId 0
[*01/21/2021 18:53:43.6508] Failed to send capwap message 0 to the state machine. Packet already freed.
[*01/21/2021 18:53:43.6508] IPv4 wtpProcessPacketFromSocket returned 4
[*01/21/2021 18:53:43.6508] Discovery Response from 192.168.20.254
[*01/21/2021 18:53:43.6508] Discovery response from MWAR ''running version 0.0.0.0 is rejected.
[*01/21/2021 18:53:43.6508] Failed to decode discovery response.
[*01/21/2021 18:53:43.6508] CAPWAP SM handler: Failed to process message type 2 state 2.
[*01/21/2021 18:53:43.6508] Failed to handle capwap control message from controller - status 4
[*01/21/2021 18:53:43.6508] Failed to process unencrypted capwap packet 0x27d2000 from 192.168.20.254
[*01/21/2021 18:53:43.6508] Failed to send message to CAPWAP state machine, msgId 0
[*01/21/2021 18:53:43.6508] Failed to send capwap message 0 to the state machine. Packet already freed.
[*01/21/2021 18:53:43.6508] IPv4 wtpProcessPacketFromSocket returned 4
[*01/21/2021 18:53:43.6608] Discovery Response from 192.168.32.1
[*01/21/2021 18:53:43.6608] Discovery response from MWAR ''running version 0.0.0.0 is rejected.
[*01/21/2021 18:53:43.6608] Failed to decode discovery response.
[*01/21/2021 18:53:43.6608] CAPWAP SM handler: Failed to process message type 2 state 2.
[*01/21/2021 18:53:43.6608] Failed to handle capwap control message from controller - status 4
[*01/21/2021 18:53:43.6608] Failed to process unencrypted capwap packet 0x2802000 from 192.168.32.1
[*01/21/2021 18:53:43.6608] Failed to send message to CAPWAP state machine, msgId 0
[*01/21/2021 18:53:43.6608] Failed to send capwap message 0 to the state machine. Packet already freed.
[*01/21/2021 18:53:43.6608] IPv4 wtpProcessPacketFromSocket returned 4
[*01/21/2021 18:53:49.5689]
[*01/21/2021 18:53:49.5689] !!!!! {watchdogd} Process wcpd gone for 180s
[*01/21/2021 18:53:53.1478]

[ilay]

在英文社区查到个类似的情况，有可能是bug，但是bug中的一个条件是domain是-T的，—H的AP有没有这种问题不太好说。

可以尝试手动刷一个其他版本试试能否注册。换版本不好使的话建议直接开case处理

参考：https://community.cisco.com/t5/cisco-bug-discussions/cisco-aironet-1815i-discovery-response-from-mwar-running-version/td-p/3884031

[hjlin]

请问有更换版本的操作步骤吗？

[ilay]

进到CLI里面：archive download-sw /reload tftp://x.x.x.x/ap3g3-k9w8-tar.153-3.xxxx.tar 即可，传输完成之后自动重启，重启完成后show version确认版本

[kelvinlu · Accepted solution]

您好，我有2个也是这个问题，18年买的，10个，然后2个也是反复闪烁，用console线反复出现，刷机了也没有用，说L2 错误，后来只能去北京维修，射频卡坏了，说是通病，500块修好了，2个1000

[kerinst]

您好，请问有厂商的联系方式么？我也出现了类似的问题，想要维修

[3284575748]

你好请问此类问题有所解决吗。我有个AP AIR-AP1832I-H-K9也是此类问题想请教解决办法。

[hjlin]

硬件坏了，找人维修好了

[3284575748]

您好，请问这类ap如何更新版本尝试一下。