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Have a nice day to you!
This post talks about the 4G connectivity on a Huawei AR169G-L not working. Please find more details as you read further down.
Issue description
The 4G connectivity does not work on a AR169G-L router after the configuration. The SIM card was attached on a private APN for an MPLS network, but the cellular interface does not come up.
If the APN is changed on the Internet one, there is connectivity. The private APN was checked on another router with the same SIM card and is working without any problem.
Handling process
Step one in the process of troubleshooting this issue.
Log in to the AR router and check the status of the interface:
Cellular0/0/0 is physical down.
< AR169G-L> display inter brief
PHY: Physical
*down: administratively down
(l): loopback
(s): spoofing
(b): BFD down
^down: standby
(e): ETHOAM down
InUti/OutUti: input utility/output utility
Interface PHY Protocol InUti OutUti inErrors outErrors
Cellular0/0/0 down up(s) 0% 0% 0 0
Cellular0/0/1 down down 0% 0% 0 0
After checking the configuration, there was nothing abnormal found.
Checked the cellular interface configuration; it seems that the SIM card was not inserted.
< AR169G-L> display Cellular 0/0/0 all
Modem State:
Hardware Information.
=====================
Model = ME906E
Modem Firmware Version = 11.234.46.02.00
Hardware Version = MD1ME906EM
Integrate circuit card identity (ICCID) = None
International Mobile Subscriber Identity (IMSI) = None
International Mobile Equipment Identity (IMEI) = 866714010444676
Modem Status = Online
Profile Information.
..........
SIM ID = 1
PIN Verification = Unknown
PIN Status = Unknown
SIM Status = Not insert
Make sure that the SIM card is inserted properly.
The AR router might not recognize the SIM card. Apply a reboot to the cellular card.
If after reboot the SIM is recognized but is locked, you will need to verify the PIN code of the SIM card.
[AR169G-L-Cellular0/0/0]modem reboot
Nov 18 2014 23:01:32+00:00 TEST %IFPDT/4/DRVICOUTSTR(l)[9]:3G/LTE module on Cellular0/0/0 is inserted!
[AR169G-L-Cellular0/0/0]display
Nov 18 2014 23:01:32+00:00 TEST %IFNET/4/LINK_STATE(l)[10]:The line protocol IP on the interface Cellular0/0/0 has entered the UP state.
[AR169G-L-Cellular0/0/0]display
Nov 18 2014 23:01:37+00:00 TEST %IFPDT/4/DRVICOUTSTR(l)[11]:3G/LTE module on Cellular0/0/0 is initializing, waiting please...
[AR169G-L-Cellular0/0/0]display
Nov 18 2014 23:01:37+00:00 TEST %IFPDT/4/DRVICOUTSTR(l)[12]:3G/LTE module on Cellular0/0/0 has been initialized successfully.
[AR169G-L-Cellular0/0/0]display
Nov 18 2014 23:01:37+00:00 TEST %IFPDT/4/DRVICOUTSTR(l)[13]:
Error: SIM/UIM card of Cellular0/0/0 has been locked, please verify PIN first.
After verify PIn code, the SIM card status is online
[AR169G-L-Cellular0/0/0]pin verify
Enter Current Pin Code:
Verifying PIN...Please wait...
PIN has been verified successfully.
===========================
SIM ID = 1
PIN Verification = Enabled
PIN Status = Ready
Number of Retries remaining = 3
SIM Status = OK
Check the cellular interface. If you still cannot obtain an IP address from your ISP follow the steps below:
From the cellular interface status, confirm that the AR router cannot attach APN.
====================
Profile 1 = ACTIVE
--------
PDP Type = IPv4, Header Compression = OFF
Data Compression = OFF
Packet Session Status = Inactive
* - Default profile
Network Information.
====================
Double check the configuration and doubt our AR router does not send out the traffic.
interface Cellular0/0/0
dialer enable-circular
dialer-group 1
apn-profile lteprofile
dialer number *99#
nat outbound 3002
ip address negotiate
Change the command "dialer number *99#" to "dialer number *99# autodial"
After changing as per above, the cellular card will obtain an IP address successfully and the problem is solved.
Root cause
The misconfiguration of the cellular interface card.
Solution
The SIM card needed the PIN code. Without this verification, the status will be always down.
Use the below command to verify the SIM card:
[Huawei] interface cellular 0/0/0
[Huawei-Cellular0/0/0] pin verify
Enter Current Pin Code:
Verifying PIN...Please wait...
PIN has been verified successfully.
After the SIM card has successfully been registered, you need to use the following command in order to attach the APN automatically:
[Huawei] interface dialer 1
[Huawei-Dialer1] dialer number *99# autodial
Suggestions
Unfortunately, the command 'dialer number *99#' cannot be overlapped.
If you need to change it, you will need to 'undo dialer number *99#' first and then configure it again.
Thanks!
