C819-4G-LTE-G 4G connection don't come up

[hencar]

Hi,

Cant get 4G connection to work in a C819 router.

Get this error message in the log:

*Mar  5 07:15:54.335: %PLATFORM-4-CELLULAR_MODEM_SKU_MISMATCH: Mismatch detected between installed modem Unknown modem on SKU type C819-4G-LTE-G. Expected modem for this SKU is MC7710

Anyone know how to fix it?

//HC

[ewald.jeitler]

hi, 

try the IOS 15.5(3)M2

this version fixed the problem on my cisco 891

br 

ewald 

RT-LTE#show version
Cisco IOS Software, C800 Software (C800-UNIVERSALK9-M), Version 15.5(3)M2, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Sun 07-Feb-16 03:15 by prod_rel_team

ROM: System Bootstrap, Version 15.2(2r)T, RELEASE SOFTWARE (fc1)

EJ-UMTS uptime is 3 hours, 54 minutes
System returned to ROM by reload at 11:37:02 CEDT Sun Apr 24 2016
System restarted at 11:56:41 CEDT Sun Apr 24 2016
System image file is "flash:/c800-universalk9-mz.SPA.155-3.M2.bin"
Last reload type: Normal Reload
Last reload reason: Reload Command

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco C819HG-4G-G-K9 (revision 6.0) with 883788K/33715K bytes of memory.
Processor board ID FCZXXXXXXXX
4 FastEthernet interfaces
1 Gigabit Ethernet interface
1 Serial(sync/async) interface
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)

[tolegato]

Hello,

Not sure if other personnel have found the resolution, but here is what I am seeing, and the resolution.

We have multiple - 819 routers, model C819HG-4G-V-K9.

INDICATIONS from the log:

*Mar 3 14:37:26.623: %PLATFORM-4-CELLULAR_MODEM_SKU_MISMATCH: Cellular0: Mismatch detected between installed modem MC7750[SKU ID 1584083] on SKU type C819-4G-LTE-V. Expected modem for this SKU is MC7750[SKU ID 9902144]

When I issue the command show cell 0 all, I am not seeing anything abnormal.

When I look for IP info - show ip int br, IP is not up on the cellular circuit.

RESOLUTION:  Initiate a firmware upgrade on your modem in the 819. Below is an instructional link which can help with this.

https://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/software/feature/guide/ehwic-4g-ltesw-book.html

I used the firmware downloaded from the next link below, upgraded the firmware, and now I can get an IP address.  I am not sure if there is a newer firmware download available, but this one worked for me.

https://software.cisco.com/download/home/284772061/type/284285628/release/3.5.10.6

As the instructions from the link above tell you to do so, I created a directory (name it what ever you wish) called flash7750 and moved the firmware upgrade file to the new directory.  After TFTPing the file to the new directory, I issued the following command, as per the information in the link above.  We use the command on the directory, not the filename.

microcode reload cellular 0 0 modem-provision flash:/flash7750

1) I am no longer seeing the disparity in the log showing a SKU_MISMATCH.

2) IP is up.

Here is what I see in the firmware upgrade. This takes 5-10 minutes max. 

rtr-1001#microcode reload cellular 0 0 modem-provision flash:/flash7750
Reload microcode? [confirm]
Log status of firmware download in router flash system?[confirm]
Firmware download status will be logged in flash:/fwlogfile
Microcode Reload Process launched for Cellular 568533812; hw type = 0x6F3
rtr-1001#
*****************************************************
The interface will be Shut Down for Firmware Upgrade
This will terminate any active data connections.
*****************************************************
*Mar 4 08:44:17.127: %LINK-5-CHANGED: Interface Cellular0, changed state to reset
*Mar 4 08:44:18.127: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0, changed state to down
*Mar 4 08:44:22.127: %LINK-5-CHANGED: Interface Cellular0, changed state to administratively down
*****************************************************
Modem will be upgraded!
Upgrade process will take up to 15 minutes. During
this time the modem will be unusable.
Please do not remove power or reload the router during
the upgrade process.
*****************************************************
Sending F/W[MC7750_VZW_03.05.10.06_00.cwe] to the card [41569157 bytes]:
Firmware file: MC7750_VZW_03.05.10.06_00.cwe sent to the card

The current modem F/W App Version: SWI9600M_03.05.10.06ap r5595 carmd-en-10527 2012/11/12 15:07:45
The current modem F/W Boot Version: SWI9600M_03.05.10.06bt r5595 carmd-en-10527 2012/11/12 15:05:38
The current modem Carrier String: 5
The current modem Device ID: MC7750
The current modem Package Identifier: MC7750_03.05.10.06_00_vzw_033.011_000
The current modem SKU ID: 1584083
Firmware Upgrade is in Progress...
*Mar 4 08:45:18.799: %CISCO800-2-MODEM_DOWN: Cellular0 modem is now DOWN.
*Mar 4 08:47:11.783: %PLATFORM-4-CELLULAR_MODEM_SKU_MISMATCH: Cellular0: Mismatch detected between installed modem MC7750[SKU ID 1584083] on SKU type C819-4G-LTE-V. Expected modem for this SKU is MC7750[SKU ID 9902144]
F/W Upgrade: Firmware Upgrade has Completed Successfully

This issue is resolved for me.  No additional log entries showing an SKU mismatch.

Thanks,

TL

[Chosebin]

My reply is late but maybe it will be helpful to somebody. I never succeeded to make a 819g or hg working correctly on cell with an IOS over c800-universalk9-mz.SPA.155-3.M10.bin, regardless if the modem's firmware is 3.5.10.2 from 2012, or 3.5.29.3 from 2014 (the latest one).

If you wanna make that 819 working stable, reload with c800-universalk9-mz.SPA.154-3.M10.bin, re-upgrade (or downgrade) cell with MC7700_ATT_03.05.10.02_00.cwe from Cisco. Than upgrade with 9999999_9999999_9200_03.05.29.03_00_generic_000.000_001_SPKG_MC.cwe obtain from Sierra (package's name is SWI9200M_3.5-Release13-SWI9200X_03.05.29.03.exe), than, upgrade to IOS c800-universalk9-mz.SPA.155-3.M10.bin, and don't expect to upgrade over that.

I can't figure out how IOS until 15.9 was published and no solution to SKU mismatch (models and parts changing depending of IOS version, totally incoherent...) was found unless being stucked to an old IOS, but that the way it is in this universe, maybe different if you go looking somewhere in the multiverse.