对PIM模块上的蜂窝网接口执行预检查

简介

本文档介绍在部署PIM模块时如何对其进行预检查，以及确认为蜂窝接口分配了IP地址。

先决条件

要求

Cisco 建议您具有以下主题的基础知识：

• 5G蜂窝网络基础知识
• 思科P-5GS6-GL模块
• Cisco IOS® XE和Cisco IOS® CG

使用的组件

本文档中的信息基于以下软件和硬件版本：

• 插入了P-5GS6-GL模块的Cisco C8300和Cisco IOS® XE版本17.06.03a。

 这适用于在SD-WAN中以控制器模式连接到路由器的P-5GS6-GL模块。  

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。如果您的网络处于活动状态，请确保您了解所有命令的潜在影响。

故障排除 

未连接到5G频段的设备

1. 与运营商一起确保已为5G频段激活所获取的网络计划。

2. 与运营商确认有关5G设备所在区域的5G覆盖区域。

确认设备的蜂窝接口未分配IP地址

ISR#sh ip int brief 
Interface              IP-Address      OK? Method Status                Protocol
GigabitEthernet0/0/0   172.16.173.10  YES other  up                    up      
GigabitEthernet0/0/1   unassigned      YES unset  up                    up      
Gi0/0/1.2989           10.10.22.74     YES other  up                    up      
GigabitEthernet0/0/2   unassigned      YES unset  down                  down    
GigabitEthernet0/0/3   10.244.182.1    YES other  up                    up      
GigabitEthernet0/0/4   unassigned      YES unset  down                  down    
GigabitEthernet0/0/5   unassigned      YES unset  down                  down    
Cellular0/2/0 unassigned YES IPCP up up Cellular0/2/1 unassigned YES IPCP administratively down down    
Sdwan-system-intf      10.244.182.1    YES unset  up                    up      
Loopback65528          192.168.1.1     YES other  up                    up      
NVI0                   unassigned      YES unset  up                    up      
Tunnel0                172.16.173.138  YES TFTP   up                    up      
Tunnel2989001          10.10.22.74     YES TFTP   up                    up      

确认设备检测到SIM

ISR#sh controllers cellular 0/X/0 details
Cellular Dual SIM details:
---------------------------
SIM 0 is present
SIM 1 is not present
SIM 0 is active SIM

ISR#sh cellular 0/X/0 security
Active SIM = 0
SIM switchover attempts = 0
Card Holder Verification (CHV1) = Disabled
SIM Status = OK
SIM User Operation Required = None
Number of CHV1 Retries remaining = 3

确认设备主动使用所需的SIM

ISR#sh controllers cellular 0/2/0 details
Cellular Dual SIM details:
---------------------------
SIM 0 is present
SIM 1 is not present
SIM 0 is active SIM

验证调制解调器固件已更新且SIM信息已填充

如果SIM信息未填充，请确保SIM已插入且无缺陷：

isr#show cellular 0/X/0 all
Hardware Information
====================
Modem Firmware Version = M0H.020202
Host Firmware Version = A0H.000292
Device Model ID = FN980
International Mobile Subscriber Identity (IMSI) = XXXXXXXXXXXXXXX
International Mobile Equipment Identity (IMEI) = XXXXXXXXXXXXXXX
Integrated Circuit Card ID (ICCID) = XXXXXXXXXXXXXXXXXXXX
Mobile Subscriber Integrated Services
Digital Network-Number (MSISDN) = XXXXXXXXXX
              *
              *

检查Radio值

如果无线电值超出有效范围，请确保所有天线均已连接且无缺陷。

有效无线电范围

RSSI:“良好”值大于–80 dBm（例如79大于–80）

RSRP:“良好”值大于–105 dBm（例如–104大于–105）

RSRQ:“良好”值大于–12 dBm（例如11大于–12）

SNR:“良好”值大于5 dBm（6大于5）

RSSI = -128 dBm通常表示调制解调器关闭或天线未连接。完全没有无线电信号。          

Isr#sh cellular 0/2/0 radio
*
Current RSSI = -65 dBm
Current RSRP = -94 dBm
Current RSRQ = -12 dB
Current SNR = 8.4  dB
*
*

确认PS状态是否已连接

如果未连接PS状态，请确保使用正确的APN并在运营商端进行调配：

isr#sh cellular 0/2/0 network
Current System Time = Sun Jan 6 3:11:7 1980
Current Service Status = No service
Current Service = Unknown
Current Roaming Status = Home
Network Selection Mode = Automatic
Network = 420 212
Mobile Country Code (MCC) = 420
Mobile Network Code (MNC) = 4
Packet switch domain(PS) state = Not attached
Registration state(EMM) = Searching/Not Registered
EMM Sub State = No IMSI
Tracking Area Code (TAC) = 0
Cell ID = 0
Network MTU = Not Available

检查配置文件配置，确保使用的是正确的APN

isr#show cellular 0/x/0 profile
Profile password Encryption level =  7

Profile 1 = INACTIVE* **
--------
PDP Type = IPv4
Access Point Name (APN) = SAMIS.M2M
Authentication = None

Profile 2 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = ims
Authentication = None

Profile 5 = INACTIVE
--------
PDP Type = IPv4
Access Point Name (APN) = SAMIS.M2M
Authentication = None

  * - Default profile
 ** - LTE attach profile

Configured default profile for active SIM 0 is profile 1.

确认检测到的网络、MCC和MNC值正确

isr#sh cellular 0/2/0 network
Current System Time = Sun Jan 6 3:11:7 1980
Current Service Status = No service
Current Service = Unknown
Current Roaming Status = Home
Network Selection Mode = Automatic
Network = 420 212
Mobile Country Code (MCC) = 420
Mobile Network Code (MNC) = 4
Packet switch domain(PS) state = Not attached
Registration state(EMM) = Searching/Not Registered
EMM Sub State = No IMSI
Tracking Area Code (TAC) = 0
Cell ID = 0
Network MTU = Not Available

如果显示的值不正确，请使用https://www.mcc-mnc.com/确认：

强制更改以更正MCC和MNC值

1.关闭蜂窝网接口：

conf t
int cellular 0/X/0
shut

2.执行PLMN搜索，这会强制调制解调器搜索区域中的可用网络：

cellular 0/X/0 lte plmn search    //This command is entered in PRIV mode, no config mode.

3.完成PLMN搜索后，请参阅具有以下内容的可用网络：

show cellular 0/X/0 network

4.选择所需网络：

cellular 0/X/0 lte plmn select manual MCC MNC INDX RAT    //Enter the desired MCC,MNC,INDX and RAT from above output

5.要强制选择所需的网络，请执行以下操作：

 cellular 0/X/0 lte plmn select force MCC MNC INDX RAT   //Enter the desired MCC,MNC,INDX and RAT from above output

检查可用的PLMN

isr#sh cellular 0/2/0 network
Current System Time = Tue Jan 8 23:43:48 1980
Current Service Status = No service
Current Service = Unknown
Current Roaming Status = Roaming
Network Selection Mode = Automatic
Network = Zain KSA
Mobile Country Code (MCC) = 420
Mobile Network Code (MNC) = 4
Packet switch domain(PS) state = Not attached
Registration state(EMM) = Not registered
EMM Sub State = Attach needed
Tracking Area Code (TAC) = 0
Cell ID = 0
Available PLMNs at  =  11:31:30 AST Thu Nov 21 2024
Idx MCC MNC RAT     Desc
1   420 1   lte     stc
2   420 3   lte     Mobily
3   420 4   lte     Zain KSA

相关信息

• 硬件安装指南

• PIM软件配置指南

• 调制解调器固件升级指南（CG和PIM）