I have got a 881 router with backup connectivity via 4G.
My 4G stopped working and now I am receiving the errors below.
*Jun 24 07:15:05.534: %CISCO800-2-MODEM_UP: Cellular0 modem is now UP
*Jun 24 07:15:25.545: %CELLWAN-4-MODEM_COMM_FAIL: Communication between Modem and IOS failed: link recovery resets modem
*Jun 24 07:15:57.145: %PLATFORM-4-CELLULAR_MODEM_SKU_MISMATCH: Mismatch detected between installed modem Unknown modem on SKU type C881G-4G-GA-K9. Expected modem for this SKU is MC7304
%Remove Dialer Profile Configuration first.
Can you provide me the software needed to upgrade the cellular modem.
Can you share show inventory and Sow version?
I was outside the office last 2 day's.
Her is the output:
NAME: "C881G-4G-GA-K9", DESCR: "C881G-4G-GA-K9 chassis, Hw Serial#: FCZ204412NK, Hw Revision: 1.0"
PID: C881G-4G-GA-K9 , VID: V01, SN: FCZ204412NK
NAME: "C881G4G Mother board on Slot 0", DESCR: "C881G4G Mother board"
PID: C881G-4G-GA-K9 , VID: V01, SN: FOC2036ALY9
NAME: "Modem 0 on Cellular0", DESCR: "Sierra Wireless MC7304 4G-GA"
PID: MC7304 , VID: , SN:
*Jun 27 08:40:18.585: %PLATFORM-4-CELLULAR_MODEM_SKU_MISMATCH: Mismatch detected between installed modem Unknown modem on SKU type C881G-4G-GA-K9. Expected modem for this SKU is MC7304
Cisco IOS Software, C800 Software (C800-UNIVERSALK9-M), Version 15.5(3)M4a, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Thu 06-Oct-16 14:23 by prod_rel_team
ROM: System Bootstrap, Version 15.4(3r)M1, RELEASE SOFTWARE (fc1)
Router uptime is 23 minutes
System returned to ROM by reload at 08:14:42 UTC Thu Jun 27 2019
System image file is "flash:c800-universalk9-mz.SPA.155-3.M4a.bin"
Last reload type: Normal Reload
Last reload reason: Reload Command
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Cisco C881G-4G-GA-K9 (revision 1.0) with 887884K/29619K bytes of memory.
Processor board ID FCZ204412NK
5 FastEthernet interfaces
3 terminal lines
1 Virtual Private Network (VPN) Module
2 Cellular interfaces
DRAM configuration is 32 bits wide
255K bytes of non-volatile configuration memory.
1000944K bytes of ATA System CompactFlash (Read/Write)
Device# PID SN
*1 C881G-4G-GA-K9 FCZ204412NK
License Information for 'c800'
License Level: advipservices Type: Permanent
Next reboot license Level: advipservices
Configuration register is 0x2102
you might be hitting the bug below. The EEM script mentioned in the workaround would look like this:
event manager applet SKU_RELOAD
event syslog pattern "Unknown modem on SKU type C881G-4G-GA-K9"
action 1.0 cli command "enable"
action 2.0 cli command "reload"
C881G-4G-GA-K9 4G connection Not getting IP address
4g connection drops randomly with error message "%PLATFORM-4-CELLULAR_MODEM_SKU_MISMATCH: Mismatch detected between installed modem Unknown modem on SKU type C881G-4G-GA-K9.
Modem Firmware = 5.5.58
Unable to capture dm logs when we loose connection.
Reboot of the route fixes the issue
Further Problem Description:
Creating an EEM script to capture the last 3 dm logs during the time of connection loss.