CGR 1000系列路由器(Cisco CG-OS)的3G模块故障排除指南

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已更新: 2017 年 11 月 17 日
文档 ID:210450

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    简介

    本文档介绍对带CG-OS的Cisco Connected Grid Router(CGR)1000系列路由器的3G模块进行故障排除的步骤。文章还就解决问题的问题、原因及解决措施进行了论述。 

    排除调制解调器故障时，第一步是确定CGR是否能识别模块。本文档说明确定此步骤所需的步骤以及如何继续此过程。

    作者：Sumedha Phatak和Abhishek Kumar，Cisco TAC工程师。

    先决条件

    要求

    Cisco 建议您了解以下主题：

    • 通过CLI访问安装有3G模块和SIM卡的CGR 1000系列路由器，并提供活动数据计划。
    • 3G无线网络覆盖在路由器的物理位置。

    使用的组件

    本文档中的信息基于以下软件和硬件版本：

    • CGR 1000系列路由器
    • Cisco CG-OS软件

    本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始（默认）配置。如果您使用的是真实网络，请确保您已经了解所有命令的潜在影响。

    故障排除

    排除调制解调器故障时，第一步是确定CGR是否能识别模块。

    验证CGR能否识别3G模块

    安装和配置3G模块后，CGR有时无法识别模块。

    1.运行show cellular 3/1 all命令以验证CGR是否能识别模块并显示所有相关信息。如果输出中的所有字段都显示“unknown”，请重新加载模块，并等待最多两分钟，然后再次验证。

    2.如果所有字段在重新加载后显示“未知”，请关闭/否关闭蜂窝网接口并等待最多两分钟，然后再次发出show cellular 3/1 all命令。

    注意：如果所有字段值继续显示“未知”，请联系思科TAC以更换模块。附加带有上述故障排除的日志，并输出“show inventory”（显示库存）以获取序列号信息。 

    重新加载3G模块

    使用此命令只重新加载3G模块。

    ast03-cgr1120-cgosB# reload module 3
reloading module 3 ...

    退回蜂窝网接口

    使用此命令关闭/不关闭蜂窝网接口。 

    ast03-cgr1120-cgosB# conf t
Enter configuration commands, one per line.  End with CNTL/Z.
ast03-cgr1120-cgosB(config)# interface cellular 3/1
ast03-cgr1120-cgosB(config-if)# shut   <<<<<<<<<<<<<<<<<   Wait for 30 sec
ast03-cgr1120-cgosB(config-if)# no shut

    3G模块启动并工作时的输出示例

    模块工作时输出“show cellular 3/1 all”。

    ast03-cgr1120-cgosB# sh cellular 3/1 all

Hardware Information
====================

Modem Firmware Version = T1_0_3_2AP R361 CNSZXD00000061 2011/04/15 17:40:48
Modem Firmware Built = 04/15/11
Modem Hardware Version = 1.0
International Mobile Subscriber Identity (IMSI) = 867941410
International Mobile Equipment Identity (IMEI) = 357115040246303
Factory Serial Number (FSN) = CC3159202581007 04/15/11
Modem status = Online
Current Modem Temperature = 35 deg C
Current Temperature State = Normal


Profile Information
===================

--- Profile 1 details ---
Status = Activated
Default: Yes
PDP Type: IPv4
Profile IP: 192.0.2.1
Profile APN: broadband
Authentication: None
Profile UserName:
Profile Password:


Data Connection Information
===========================

Data Transmitted = 460 bytes
Data Received = 420 bytes
Profile 1, Packet Session Status = ACTIVATED
IP Address = 192.0.2.1


Network Information
===================

Modem status = Online
Service status = Normal
Service type = Combined
Current Roaming Status = Home
Country Initials = USA
Network name = AT&T
Mobile Country Code (MCC) = 310
Mobile Network Code (MNC) = 410
Location Area Code (LAC) = 28986
Routing Area Code (RAC) = 1
Cell ID = 50434
Primary Scrambling Code = 2
PLMN Selection = Automatic


Radio Information
=================

Current band = WCDMA_V_850
Radio power mode = On
Channel number = 4359
Band selected = Auto
Current RSSI = -92 dBm


Band Information
================

  Number of bands:   5
  Band 1: WCDMA: NA
  Band 2: GSM PCS 850
  Band 3: GSM ALL
  Band 4: WCDMA ALL
  Band 5: AUTO BAND


Current LED values
==================
WWAN: green
RSSI: amber
SIM Slot 0: off
SIM Slot 1: green
Service: green
GPS: off

    检查3G模块是否已识别但没有连接

    检查蜂窝网接口

    发出show ip interface brief命令并验证蜂窝网接口是否收到IP且状态为UP。如果接口无法获取IP，请继续转到publishoot。

    ast03-cgr1120-cgosB# sh ip int b
IP Interface Status for VRF "default"(1)
Interface            IP Address      Interface Status
Cell3/1              192.0.2.1       protocol-up/link-up/admin-up

    检查信号强度

    接收信号强度指示(RSSI)指示3G模块接收的信号的强度。这可以使用show cellular 3/1 radio命令进行检查。

    ast03-cgr1120-cgosB# sh cellular 3/1 radio

Current band = WCDMA_V_850
Radio power mode = On
Channel number = 4359
Band selected = Auto
Current RSSI = -92 dBm

    RSSI值：

    1. RSSI至少应大于–90，以实现可靠连接。RSSI大于–60表示信号强度强。

    2.如果RSSI小于–100，则模块将无法连接到网络。这可能是由于以下原因：

    • 蜂窝网接口管理性关闭；no关闭蜂窝网接口并检查RSSI值是否更改。
    • 模块卡在低功耗模式；shut/no shut the cellular interface并检查RSSI值是否更改。请等待30秒，然后发出no shut命令。
    • 天线丢失或连接不正确。
    • 该区域没有3G服务覆盖。

    3.如果RSSI大于–60，则需要进行更多故障排除。启用调试以进一步分类问题。

    检查IP地址连接

    1.使用show ip interface brief和show cellular 3/1 all all命令验证模块是否发起出站呼叫并接收IP地址。调试输出示例，用于验证这一点：

    2009 Feb  5 22:57:51.479132 dialer: Dialer1 is in READY state

2009 Feb  5 22:57:52 ast03-cgr1120-cgosB %DIALER-5-DIALER_DIAL_OUT: Dialer1 dial out cellular3/1 successfully 

2009 Feb  5 22:57:52.572770 dialer: Dialer1 dial out cellular3/1 successfully 

2009 Feb  5 22:57:55 ast03-cgr1120-cgosB %CELLPM-5-CELLPM_CON_EST: Connection Established 

2009 Feb  5 22:57:55.317420 cellpm: Get Ip from modem 192.0.2.1 

2009 Feb  5 22:57:55.995243 cellpm: interface cellular 3/1 IP address 192.0.2.1

    2.如果发出出站呼叫但未收到IP地址，请收集日志，通过show log查看断开原因 |无命令并将其附加到TAC案例。

    3.如果没有出站呼叫请求，请执行空中初始化(IOTA)以验证是否可以建立连接（仅用于CDMA模块）。

    cellular3/1 cdma activate otasp *22899

    (i)如果IOTA连接成功，请检查硬件或配置问题。

    • show interface cellual 3/1
    • show controllers cellular 3/1
    • show tech

    (ii)如果IOTA连接不成功，请验证原因日志并发出以下命令：

    • show log |否 

    成功连接时的调试输出示例：

    2009 Feb  5 22:57:37 ast03-cgr1120-cgosB %DIALER-5-DIALER_MODEM_UP: Modem active 

2009 Feb  5 22:57:37.758585 dialer: modem changes from DISABLE to ENABLE 
2009 Feb  5 22:57:37.758652 dialer: CHAT SCRIPT CHAT profile 1 
2009 Feb  5 22:57:37.758722 dialer: Dialer1 is in READY state 
2009 Feb  5 22:57:37.758764 dialer: Dial out interface service is not ready yet 
2009 Feb  5 22:57:37.762968 cellpm: Plmn Ready: 0 
2009 Feb  5 22:57:37 ast03-cgr1120-cgosB %CELLPM-5-CELLPM_SIM_STATUS: SIM Status: SIM Okay 

2009 Feb  5 22:57:37.763128 cellpm: SIM Status: SIM Okay 
2009 Feb  5 22:57:37.763231 cellpm: Rec'd Modem Radio Power Enable 
2009 Feb  5 22:57:37.763520 cellpm: Receive modem enabled notification 
2009 Feb  5 22:57:37 ast03-cgr1120-cgosB %CELLPM-5-CELLPM_MODEM_UP: Modem enabled 

2009 Feb  5 22:57:37.766192 dialer: Modem Enable on interface 29100000 
2009 Feb  5 22:57:37.766257 dialer: Rec'd cellular3/1 modem ENABLE notification  
2009 Feb  5 22:57:37.766303 dialer: current modem state is ENABLE 
2009 Feb  5 22:57:39.485643 cellpm: Network Service Status: Emergency 
2009 Feb  5 22:57:39.485697 cellpm: Network Service Type: Invalid Service 
2009 Feb  5 22:57:39.485932 cellpm: Send MTS opcode 183321 to sap 776 if_index 29100000 
2009 Feb  5 22:57:39.488392 dialer: Modem service is out for interface 29100000 
2009 Feb  5 22:57:39.488686 cellpm: Service Type: 0 
2009 Feb  5 22:57:39.488787 cellpm: Registration Indication: 
2009 Feb  5 22:57:39 ast03-cgr1120-cgosB %CELLPM-5-CELLPM_NETWORK_NAME:   

2009 Feb  5 22:57:39.488851 cellpm:  
2009 Feb  5 22:57:41.360863 cellpm: Network Service Status: Emergency 
2009 Feb  5 22:57:41.360928 cellpm: Network Service Type: Invalid Service 
2009 Feb  5 22:57:41.361704 cellpm: Send MTS opcode 183321 to sap 776 if_index 29100000 
2009 Feb  5 22:57:41.364084 cellpm: Service Type: 0 
2009 Feb  5 22:57:41.364157 dialer: Modem service is out for interface 29100000 
2009 Feb  5 22:57:41.364938 cellpm: Registration Indication: 
2009 Feb  5 22:57:41.365040 cellpm:  
2009 Feb  5 22:57:41.466717 cellpm: Network Service Status: Emergency 
2009 Feb  5 22:57:41.466770 cellpm: Network Service Type: Invalid Service 
2009 Feb  5 22:57:41.467005 cellpm: Send MTS opcode 183321 to sap 776 if_index 29100000 
2009 Feb  5 22:57:41.469358 cellpm: Service Type: 0 
2009 Feb  5 22:57:41.469444 dialer: Modem service is out for interface 29100000 
2009 Feb  5 22:57:41.469478 cellpm: Registration Indication: 
2009 Feb  5 22:57:41.469568 cellpm:  
2009 Feb  5 22:57:41.469645 cellpm: Network Service Status: Normal 
2009 Feb  5 22:57:41.469689 cellpm: Network Service Type: Combined 
2009 Feb  5 22:57:41.469733 cellpm: Modem Status Normal notify dialer 
2009 Feb  5 22:57:41.469929 cellpm: Send MTS opcode 183299 to sap 776 if_index 29100000 
2009 Feb  5 22:57:41.472329 dialer: Modem Enable on interface 29100000 
2009 Feb  5 22:57:41.472382 dialer: Rec'd cellular3/1 modem ENABLE notification  
2009 Feb  5 22:57:41.472427 dialer: current modem state is ENABLE 
2009 Feb  5 22:57:41.477311 cellpm: MTS_OPC_CELLPM_SERVICE_READY send at port 3 
2009 Feb  5 22:57:41.477369 cellpm: Service Type: 6 
2009 Feb  5 22:57:41.477405 dialer: Modem service is ready for interface 29100000 
2009 Feb  5 22:57:41.477456 dialer: Rec'd cellular3/1 AT port 3 
2009 Feb  5 22:57:41.477466 cellpm: Registration Indication: 
2009 Feb  5 22:57:41.477504 cellpm:  Network Name: AT&T 
2009 Feb  5 22:57:41.477512 dialer: timer start #0 if_index 29100000 
2009 Feb  5 22:57:41 ast03-cgr1120-cgosB last message repeated 2 times

2009 Feb  5 22:57:41 ast03-cgr1120-cgosB %CELLPM-5-CELLPM_NETWORK_NAME:  AT&T 

2009 Feb  5 22:57:41.477560 dialer: Create time for msg 0 
2009 Feb  5 22:57:41.477589 cellpm:  
2009 Feb  5 22:57:41.477601 dialer: dialer_timer_start start timer 
2009 Feb  5 22:57:48.636548 cellpm: cellpm_timer_msg_handler 0xb610052c Message type is 0 
2009 Feb  5 22:57:48.636609 cellpm: timer expired if_index 29100000 
2009 Feb  5 22:57:48.637429 cellpm: The onboard temp is 30 
2009 Feb  5 22:57:48.639603 cellpm: temperature timer start if_index 29100000 
2009 Feb  5 22:57:48.639666 cellpm: Create time for msg 0 
2009 Feb  5 22:57:48.639711 cellpm: cellpm_timer_start start timer 
2009 Feb  5 22:57:48.655443 cellpm: Modem Status Online 
2009 Feb  5 22:57:48.655495 cellpm: temp 30 low crit -26 norm -23 admin state 1 
2009 Feb  5 22:57:51.479034 dialer: timer expired if_index 29100000 
2009 Feb  5 22:57:51.479098 dialer: CHAT SCRIPT CHAT profile 1 
2009 Feb  5 22:57:51.479132 dialer: Dialer1 is in READY state 
2009 Feb  5 22:57:52.572492 dialer: timeout_val 60 dialer_retry_num 1 
2009 Feb  5 22:57:52.572572 dialer: timer start #1 if_index 29100000 
2009 Feb  5 22:57:52.572627 dialer: Create time for msg 0 
2009 Feb  5 22:57:52.572673 dialer: dialer_timer_start start timer 
2009 Feb  5 22:57:52 ast03-cgr1120-cgosB %DIALER-5-DIALER_DIAL_OUT: Dialer1 dial out cellular3/1 successfully 

2009 Feb  5 22:57:52.572770 dialer: Dialer1 dial out cellular3/1 successfully 
2009 Feb  5 22:57:52.573620 cellpm: Plmn Ready: 0 
2009 Feb  5 22:57:54.497230 cellpm: Network Service Status: Normal 
2009 Feb  5 22:57:54.497286 cellpm: Network Service Type: Combined 
2009 Feb  5 22:57:54.497329 cellpm: Modem Status Normal notify dialer 
2009 Feb  5 22:57:54.497553 cellpm: Send MTS opcode 183299 to sap 776 if_index 29100000 
2009 Feb  5 22:57:54.497771 dialer: Modem Enable on interface 29100000 
2009 Feb  5 22:57:54.497831 dialer: Rec'd cellular3/1 modem ENABLE notification  
2009 Feb  5 22:57:54.497880 dialer: current modem state is ENABLE 
2009 Feb  5 22:57:54.508855 dialer: Modem service is ready for interface 29100000 
2009 Feb  5 22:57:54.508924 dialer: Rec'd cellular3/1 AT port 3 
2009 Feb  5 22:57:54.508972 dialer: Dial out timer started already 
2009 Feb  5 22:57:54.509194 cellpm: MTS_OPC_CELLPM_SERVICE_READY send at port 3 
2009 Feb  5 22:57:54.509259 cellpm: Service Type: 6 
2009 Feb  5 22:57:55 ast03-cgr1120-cgosB %CELLPM-5-CELLPM_GSM_SESSION_ACTIVE: GSM Profile 1 is activated 

2009 Feb  5 22:57:55.295970 cellpm: GSM profile 1 is activated 
2009 Feb  5 22:57:55.296018 cellpm: Activation Status:             1 
2009 Feb  5 22:57:55.296062 cellpm: Negotiated QoS:                1 
2009 Feb  5 22:57:55.296103 cellpm: Negotiated Precedence:         2 
2009 Feb  5 22:57:55.296334 cellpm: Send MTS - PKT SESS ACTIVATED to dialer 
2009 Feb  5 22:57:55.296695 dialer: Session activated. Dialer1 stop dialing 
2009 Feb  5 22:57:55 ast03-cgr1120-cgosB %DIALER-5-DIALER_CON_EST: Connection Established 

2009 Feb  5 22:57:55.297250 cellpm: Rec'd session active notification 
2009 Feb  5 22:57:55 ast03-cgr1120-cgosB %CELLPM-5-CELLPM_CON_EST: Connection Established 

2009 Feb  5 22:57:55.317420 cellpm: Get Ip from modem 192.0.2.1 
2009 Feb  5 22:57:55 ast03-cgr1120-cgosB %URIB-4-ZERO_NEXTHOP:  urib [3445] (default-base) Client "static" added 0.0.0.0 next hop and interface Cellular3/1 is not point-to-point

2009 Feb  5 22:57:55 ast03-cgr1120-cgosB %VSHD-5-VSHD_SYSLOG_CONFIG_I: Configured from vty by root on vsh.28455

2009 Feb  5 22:57:55.995243 cellpm: interface cellular 3/1 IP address 192.0.2.1 
2009 Feb  5 22:57:55.998937 cellpm: Send MTS opcode 229378 to sap 776 if_index 29100000 
2009 Feb  5 22:57:56.006669 cellpm: Service Type: 6 
2009 Feb  5 22:57:56 ast03-cgr1120-cgosB %CELLPM-5-CELLPM_STATE_CHANGE: Moving to State: Connected 

2009 Feb  5 22:58:03.100719 cellpm: Network Service Status: Normal 
2009 Feb  5 22:58:03.100788 cellpm: Network Service Type: Combined 
2009 Feb  5 22:58:03.100835 cellpm: Modem Status Normal notify dialer 
2009 Feb  5 22:58:03.101097 cellpm: Send MTS opcode 183299 to sap 776 if_index 29100000 
2009 Feb  5 22:58:03.103525 cellpm: Service Type: 6 
2009 Feb  5 22:58:03.103560 dialer: Modem Enable on interface 29100000 
2009 Feb  5 22:58:03.103610 dialer: Rec'd cellular3/1 modem ENABLE notification  
2009 Feb  5 22:58:03.103654 dialer: current modem state is ENABLE 
2009 Feb  5 22:58:03.732185 cellpm: Service Type: 6 
2009 Feb  5 22:58:38.918415 cellpm: Get Ip from modem 192.0.2.1 
2009 Feb  5 22:58:38.969173 cellpm: Get Ip from modem 192.0.2.1

    检验Ping

    如果蜂窝网接口收到IP，且接口状态为UP，请检验对公有IP的ping是否成功。如果ping不成功，请检查默认路由是否配置正确。 

    ast03-cgr1120-cgosB# conf t
Enter configuration commands, one per line.  End with CNTL/Z.
ast03-cgr1120-cgosB(config)#ip route 0.0.0.0 0.0.0.0 Cellular3/1

ast03-cgr1120-cgosB# show ip route
0.0.0.0/0, ubest/mbest: 1/0
    *via Cellular3/1, [1/0], 00:06:05, static


ast03-cgr1120-cgosB# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=54 time=1786.39 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=54 time=89.716 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=54 time=89.699 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=54 time=99.691 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=54 time=119.689 ms

--- 8.8.8.8 ping statistics ---
5 packets transmitted, 5 packets received, 0.00% packet loss
round-trip min/avg/max = 89.699/437.037/1786.39 ms

    打开TAC服务请求时要收集的信息

    如果您打开TAC服务请求，请将此信息附加到您的请求中，以排除3G调制解调器问题：

    • 对相关日志执行故障排除的详细信息
    • show tech
    • show log |否
    • debug chat trace
    • debug cellular trace
    • debug dialer trace

    相关信息

    TAC Authored

    由思科工程师提供

    • Sumedha Phatak
      Cisco TAC Engineer
    • Abhishek Kumar
      Cisco TAC Engineer

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