某局点CPE5100每天都会出现断网问题

设备型号和版本： CPE5100 ESS1103  插入5G SIM卡附着运营商5G网络，通过运营商N6接口后与园区AC想通，并以fit模式运行

查看logfille中CPE的信息，问题发生时候为9月10日19:15左右，看的是和基站断开连接了，此时只有重启才能重新附着： 

%@2462%Sep 12 08:30:43:512 2023 H3C SYSLOG/6/SYSLOG_RESTART: System restarted --

H3C Comware Software.

%@2463%Sep 12 08:31:21:911 2023 H3C IFNET/3/PHY_UPDOWN: Physical state on the interface WLAN-Radio1/0/1 changed to up.

%@2464%Sep 12 08:31:21:912 2023 H3C IFNET/3/PHY_UPDOWN: Physical state on the interface WLAN-Radio1/0/2 changed to up.

%@2465%Sep 12 08:31:23:264 2023 H3C STAMGR/6/SERVICE_ON: BSS 54c6-ff42-f6e0 was created after service template 1 with SSID H3C was bound to radio 1 on AP fatap.

%@2466%Sep 12 08:31:23:879 2023 H3C STAMGR/6/SERVICE_ON: BSS 54c6-ff42-f6f0 was created after service template 1 with SSID H3C was bound to radio 2 on AP fatap.

%@2467%Sep 12 08:31:32:216 2023 H3C IFNET/3/PHY_UPDOWN: Physical state on the interface Vlan-interface1 changed to up.

%@2468%Sep 12 08:31:32:220 2023 H3C IFNET/5/LINK_UPDOWN: Line protocol state on the interface Vlan-interface1 changed to up.

%@2469%Sep 12 08:31:32:228 2023 H3C STAMGR/6/STAMGR_CLIENT_ONLINE: Client a41a-3ae0-302e went online from BSS 54c6-ff42-f6f0 vlan 1 with SSID H3C on AP fatap Radio ID 2. State changed to Run.

%@2470%Sep 12 08:31:32:236 2023 H3C STAMGR/6/STAMGR_CLIENT_SNOOPING: Detected client IP change: Client MAC: a41a-3ae0-302e, IP: 192.168.8.4, -NA-, -NA-, -NA-, Username: -NA-, AP name: fatap, Radio ID: 2, Channel number: 6, SSID: H3C, BSSID: 54c6-ff42-f6f0.

%@2471%Sep 12 08:31:35:304 2023 H3C NTP/5/NTP_LEAP_CHANGE: System Leap Indicator changed from 3 to 0 after clock update.

%@2472%Sep 12 08:31:35:304 2023 H3C NTP/5/NTP_STRATUM_CHANGE: System stratum changed from 16 to 8 after clock update.

%@2473%Sep 12 08:31:38:458 2023 H3C CELLULAR/4/DEV_INSERTED: Controller Cellular1/0/1: Modem device is inserted.

%@2474%Sep 12 08:31:38:459 2023 H3C IFNET/3/PHY_UPDOWN: Physical state on the interface Cellular1/0/1 changed to up.

%@2475%Sep 12 08:31:38:464 2023 H3C IFNET/3/PHY_UPDOWN: Physical state on the interface Async1/0/1 changed to up.

%@2476%Sep 12 08:31:41:475 2023 H3C IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/1 changed to up.

%@2477%Sep 12 08:31:41:475 2023 H3C IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/1 changed to up.

%@2478%Sep 12 08:32:04:461 2023 H3C CELLULAR/5/CELLULAR:

 Controller Cellular1/0/1: The network connection switched to 5G.

1、．从log中看到了大量的4G 5G切换信息，怀疑5网络波动导致CPE会切换到4G

2． 从log中看到了大量10分钟超时重启的信息，这种情况只会发生在FIT模式下连接不上AC的场景，当AP与AC断联后，间隔10min重启为正常现象

 3、问题时间点存在数据不通的情况：

%@2443%Sep 10 19:11:12:993 2023 H3C NTP/5/NTP_SOURCE_LOST: Lost synchronization with NTP server with IP address 0.0.0.0.

%@2444%Sep 10 19:11:35:993 2023 H3C NTP/5/NTP_LEAP_CHANGE: System Leap Indicator changed from 3 to 0 after clock update.

%@2445%Sep 10 19:11:35:993 2023 H3C NTP/5/NTP_STRATUM_CHANGE: System stratum changed from 16 to 3 after clock update.

%@2446%Sep 10 19:14:47:993 2023 H3C NTP/5/NTP_SOURCE_LOST: Lost synchronization with NTP server with IP address 0.0.0.0.

%@2447%Sep 10 19:15:09:993 2023 H3C NTP/5/NTP_LEAP_CHANGE: System Leap Indicator changed from 3 to 0 after clock update.

%@2448%Sep 10 19:15:09:993 2023 H3C NTP/5/NTP_STRATUM_CHANGE: System stratum changed from 16 to 8 after clock update.

这种数据面不通，且4G与5G频繁切换的现象，同时通过display cellular命令查看无相关的radio信息，确认为之前模组版本的软件已知问题，需升级模组版本解决，具体查看如下Modem Firmware Version: 500QCNAAR12A08M4G，如果不符合以下两种版本，需更新：

可以选择任一版本使用：

RG200UCNAAR03A01M2G

RG200UCNAAR03A03M2G

<H3C>display cellular

Cellular1/0/1:

  Hardware Information:

    Model: RM500Q-CN

    Manufacturer: Quectel

    Modem Firmware Version: 500QCNAAR12A08M4G

    Hardware Version:

    International Mobile Subscriber Identity (IMSI): 4600782227XXXX

    International Mobile Equipment Identity (IMEI): 865087050288423

    Modem Status: Online

  Profile Information:

    Profile index: 1

      PDP Type: IPv4v6

      Header Compression: Off

      Data Compression: Off

      Access Point Name (APN): cmnet

    Profile index: 2

      PDP Type: IPv4v6

      Header Compression: Off

      Data Compression: Off

      Access Point Name (APN): ims

    Profile index: 3

      PDP Type: IPv4v6

      Header Compression: Off

升级模组固件软件（版本向无线L3产线获取），首先将CPE中无用文件删除，保证可用空间在400M以上，然后使用tftp或者ftp工具将固件包传到flash目录，上传完毕后重启CPE，CPE会完成自动升级，升级过程中不要给CPE断电。固件写入完成后，CPE会自动重启2次，并有如下打印记录：

During modem firmware updating, powering off of device is forbidden.

%Feb 28 06:02:47:490 2024 H3C MODEM/2/MODEM_FIRMWARE_UPDATE_START: Modem firmware update is starting...

%Feb 28 06:02:47:492 2024 H3C MODEM/5/MODEM_FIRMWARE_UPDATE_PROGRESS: The modem firmware has been updated by 0%

%Feb 28 06:02:53:503 2024 H3C MODEM/5/MODEM_FIRMWARE_UPDATE_PROGRESS: The modem firmware has been updated by 20%

%Feb 28 06:03:47:358 2024 H3C MODEM/5/MODEM_FIRMWARE_UPDATE_PROGRESS: The modem firmware has been updated by 70%

%Feb 28 06:03:47:358 2024 H3C MODEM/5/MODEM_FIRMWARE_UPDATE_SUCCESS: Modem firmware update is successful.

升级后可稳定注册5G网络中并显示详细radio信息