We are using Cisco EHWIC-4G-LTE-VZ= cellular cards in our Cisco 1941 routers. We have built IPsec tunnels through the cellular connection with Verizon Wireless which will provide our sites a backup connection if the main circuit were to fail.
Periodically, the Tunnel0 interface will go into a up/down status for no apparent reason. When this occurs I have verified that the cellular connection is ok by checking the cellular RSSI level which is always -70 dBm or better. I also contact Verizon Wireless who has confirmed that the cellular card is checking in with their network on a daily basis. They have mentioned that they see the device is checking in but it's not displaying the correct APN name which should be mw01.VZWSTATIC. When I check the configuration on each router I have confirmed that mw01.VZWSTATIC is statically set in Profile3 but it is INACTIVE. At times, I am able to bring the tunnel back up by rebooting the router but this isn't a good solution.
Has anyone else run into a similar issue? Below is snapshot of one of the routers that is experiencing this issue.
MMR253.CHIL>show ip int brief
Interface IP-Address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/0 unassigned YES NVRAM up up
GigabitEthernet0/0.96 10.60.16.253 YES NVRAM up up
GigabitEthernet0/0.200 10.253.3.194 YES NVRAM up up
GigabitEthernet0/1 10.30.16.254 YES NVRAM up up
FastEthernet0/0/0 unassigned YES NVRAM administratively down down
FastEthernet0/0/1 unassigned YES NVRAM administratively down down
Cellular0/1/0 unassigned YES IPCP up up
Cellular0/1/1 unassigned YES unset down down
Cellular0/1/2 unassigned YES unset down down
Cellular0/1/3 unassigned YES unset down down
Loopback1 10.65.0.49 YES NVRAM up up
Tunnel0 10.254.3.194 YES NVRAM up down
MMR253.CHIL>show cell
MMR253.CHIL>show cellular 0/1/0 all
Hardware Information
====================
Modem Firmware Version = SWI9X15C_05.05.58.01
Modem Firmware built = 2015/03/05 00:02:40
Hardware Version = 1.0
Device Model ID: MC7350
Package Identifier ID: 1102036_9903208_MC7350_05.05.58.01_00_Cisco_005.005_000
International Mobile Subscriber Identity (IMSI) = 311480235430048
International Mobile Equipment Identity (IMEI) = 356732060310412
Integrated Circuit Card ID (ICCID) = 89148000002338030619
Mobile Subscriber Integrated Services
Digital Network-Number (MSISDN) = 2244435108
Current Modem Temperature = 30 deg C
PRI SKU ID = 9903208, PRI version = 05.05
Profile Information
====================
Profile password Encryption level: 7
Profile 1 = INACTIVE **
--------
PDP Type = IPv4v6
Access Point Name (APN) = vzwims
Authentication = None
Profile 2 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = vzwadmin
Authentication = None
Profile 3 = INACTIVE*
--------
PDP Type = IPv4
Access Point Name (APN) = mw01.VZWSTATIC
Authentication = None
Profile 4 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = vzwapp
Authentication = None
Profile 5 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = vzw800
Authentication = None
* - Default profile
** - LTE attach profile
Data Connection Information
===========================
Data Transmitted = 0 bytes, Received = 0 bytes
Profile 1, Packet Session Status = INACTIVE
Profile 2, Packet Session Status = INACTIVE
Profile 3, Packet Session Status = INACTIVE
Profile 4, Packet Session Status = INACTIVE
Profile 5, Packet Session Status = INACTIVE
Profile 6, Packet Session Status = INACTIVE
Network Information
===================
Current System Time = Mon Oct 17 15:44:20 2016
Current Service Status = Normal
Current Service = Packet switched
Current Roaming Status = Home
Network Selection Mode = Automatic
Network = VZW
Mobile Country Code (MCC) = 311
Mobile Network Code (MNC) = 480
Packet switch domain(PS) state = Attached
Registration state(EMM) = Registered
EMM Sub State = Normal Service
Tracking Area Code (TAC) = 51777
Cell ID = 51776524
Primary Scrambling Code = 65535
Radio Information
=================
Radio power mode = ON
LTE Rx Channel Number = 2050
LTE Tx Channel Number = 20050
LTE Band = 4
LTE Bandwidth = 20 MHz
Current RSSI = -57 dBm
Current RSRP = -89 dBm
Current RSRQ = -11 dB
Current SNR = 23.0 dB
Radio Access Technology(RAT) Preference = AUTO
Radio Access Technology(RAT) Selected = LTE
Modem Security Information
==========================
Card Holder Verification (CHV1) = Disabled
SIM Status = OK
SIM User Operation Required = None
Number of CHV1 Retries remaining = 3
GPS Information
==========================
GPS Info
-------------
GPS Feature: enabled
GPS Port Selected: Dedicated GPS port
GPS State: GPS disabled
SMS Information
===============
Incoming Message Information
----------------------------
SMS stored in modem = 0
SMS archived since booting up = 0
Total SMS deleted since booting up = 0
Storage records allocated = 25
Storage records used = 0
Number of callbacks triggered by SMS = 0
Number of successful archive since booting up = 0
Number of failed archive since booting up = 0
Outgoing Message Information
----------------------------
Total SMS sent successfully = 0
Total SMS send failure = 0
Number of outgoing SMS pending = 0
Number of successful archive since booting up = 0
Number of failed archive since booting up = 0
Last Outgoing SMS Status = SUCCESS
Copy-to-SIM Status = 0x0
Send-to-Network Status = 0x0
Report-Outgoing-Message-Number:
Reference Number = 0
Result Code = 0x0
Diag Code = 0x0 0x0 0x0 0x0 0x0
SMS Archive URL =
Error Information
=================
This command is not supported on 4G modems.
Modem Crashdump Information
===========================
Modem crashdump logging: off
