The Dual SIMs feature provides the following:

• A fail over mechanism in the event the primary SIM loses connectivity to one of the Mobile Service Provider networks. There is no automatic fall-back to the primary SIM, since a change only occurs when there is no signal from the carrier in use. A script is needed to reverse back to the primary. Both mobile provider networks must be supported by the given IR807 SKU, and it must be in an applicable region.
  • By default, SIM slot 0 is the primary, and SIM slot1 is the backup. Behavior may be changed using the lte sim primary command.
  • Profiles for each SIM are assigned by using the lte sim profile command. Each SIM has an associated Internet profile and an IMS profile in the CLI.
  • The fail-overs happen when there is no signal from the current carrier, and generally happen depending on the fail-over timer value that is set. The default value is 2 minutes. The range is from 0-7 minutes.

The following examples are of an IR807 cellular configuration:

IR807> enable
IR807# show ip int brief
Interface      IP-Address     OK?   Method   Status                  Protocol
Async0         unassigned     YES   unset    up                      down
Async1         unassigned     YES   unset    up                      down
Cellular0      166.140.43.237 YES   IPCP     up                      up         
Single APN
Cellular1      10.61.25.231   YES   IPCP     up                      up         
Multi APN
FastEthernet0  10.65.217.109  YES   TFTP     administratively down   down
FastEthernet1  unassigned     YES   unset    administratively down   down

The output of this running configuration example has been edited for brevity:

! Last configuration change at 10:22:51 CET Thu Oct 12 2017 by admin
! NVRAM config last updated at 10:24:19 CET Thu Oct 12 2017 by admin
!
version 15.7
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone year
service password-encryption
service sequence-numbers
!
hostname ir807
!
boot-start-marker
boot system flash:ir800l-universalk9-mz.SSA
boot-end-marker
!
security authentication failure rate 10 log
security passwords min-length 6
logging buffered warnings
logging persistent size 850000000
no logging console
no logging monitor
enable secret 5 $1rAjYMlZ2e6K0lxR2bOo0
!
aaa new-model
!
aaa authentication login local_auth local
!
aaa session-id common
clock timezone CET 1 0
clock summer-time CET recurring last Sun Mar 3:00 last Sun Oct 2:00
clock calendar-valid
!
crypto pki trustpoint TP-self-signed-4288165946
 enrollment selfsigned
 subject-name cn=IOS-Self-Signed-Certificate-4288165946
 revocation-check none
 rsakeypair TP-self-signed-4288165946
!
crypto pki certificate chain TP-self-signed-4288165946
no ip source-route
no ip gratuitous-arps
!
ip dhcp excluded-address 192.168.1.1
ip dhcp excluded-address 192.168.15.5
!
ip dhcp pool Test
 network 192.168.15.4 255.255.255.252
 default-router 192.168.15.5 
!
no ip bootp server
no ip domain lookup
ip domain name local.cisco.com
ip cef
login block-for 20 attempts 3 within 15
login on-failure log
login on-success log
!
ipv6 unicast-routing
ipv6 cef
!
multilink bundle-name authenticated
!
chat-script lte "" "AT!CALL" TIMEOUT 20 "OK"
license udi pid IR807G-LTE-GA-K9 sn FCW211700GN
!
!
memory reserve console 4096 
vtp mode transparent
username admin privilege 15 secret 5 $1$e2C.$DUdXjmv0
!
!
redundancy
!
controller Cellular 0
 lte modem link-recovery disable
no cdp advertise-v2
no cdp run
!
interface Cellular0
 ip address negotiated
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip nat outside
 ip virtual-reassembly in
 encapsulation slip
 dialer in-band
 dialer idle-timeout 0
 dialer string lte
 dialer watch-group 1
 ipv6 address autoconfig
 async mode interactive
!
interface Cellular1
 no ip address
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 encapsulation slip
 shutdown
!
interface FastEthernet0
 ip address 192.168.101.1 255.255.255.0
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip nat inside
 ip virtual-reassembly in
 duplex auto
 speed auto
!
interface FastEthernet1
 no ip address
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip nat inside
 ip virtual-reassembly in
 shutdown
 duplex auto
 speed auto
!
interface Async0
 no ip address
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 encapsulation scada
 shutdown
!
interface Async1
 no ip address
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 encapsulation scada
 shutdown
!
!
no ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
ip nat inside source list 1 interface Cellular0 overload
ip nat inside source static tcp 192.168.101.10 80 interface Cellular0 80
ip ssh logging events
ip ssh version 2
ip ssh server algorithm encryption aes128-ctr aes192-ctr aes256-ctr
ip ssh client algorithm encryption aes128-ctr aes192-ctr aes256-ctr
!
!
logging history size 500
no logging trap
logging facility local2
dialer watch-list 1 ip 8.8.8.8 0.0.0.0
dialer-list 1 protocol ip permit
dialer-list 1 protocol ipv6 permit
ipv6 ioam timestamp
!
!
access-list 1 permit 0.0.0.0 252.255.255.255
!
!
!
control-plane
!
!
!
no vstack
banner login 
==============================================================================
Test
==============================================================================
!
line con 0
 exec-timeout 5 0
 logging synchronous
 login authentication local_auth
 transport output telnet
line 2
 exec-timeout 5 0
 privilege level 0
 no activation-character
 no exec
 transport preferred none
 transport input all
 transport output none
 stopbits 1
line 3
 exec-timeout 5 0
 script dialer lte
 modem InOut
 no exec
 rxspeed 100000000
 txspeed 50000000
line 4
 exec-timeout 5 0
 privilege level 0
 no exec
 transport output none
line 5
 exec-timeout 5 0
 privilege level 0
 no exec
 transport output none
 stopbits 1
line 8
 exec-timeout 5 0
 privilege level 0
 no exec
 transport output none
 rxspeed 100000000
 txspeed 50000000
line vty 0 4
 exec-timeout 15 0
 login authentication local_auth
 transport input telnet ssh
 transport output none
!
exception memory ignore overflow processor
exception memory ignore overflow io
scheduler allocate 20000 1000
!
end

Test the modem configuration with a ping command:

IR807# ping 8.8.8.8
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 30/88/292 ms
IR807#

The following examples show modem profiles.

IR807# show cell 0 hardware
 
Modem Firmware Version = SWI9X15Y_07.12.09.00 
Modem Firmware built = 2017/04/26 23:34:19 
Hardware Version = 1.0 
Device Model ID: WP7504 
Package Identifier ID: 1103235_9906722_WP7504_07.12.09.00_00_Cisco_001.001_000 
International Mobile Subscriber Identity (IMSI) = 001012345678901 
International Mobile Equipment Identity (IMEI) = 354937080100642 
Integrated Circuit Card ID (ICCID) = 89600114082100035643 
Mobile Subscriber Integrated Services 
Digital Network-Number (MSISDN) = 
Modem Status = Online 
Current Modem Temperature = 37 deg C 
PRI SKU ID = 1103235, PRI version = 001.028_000, Carrier = ATT 
OEM PRI version = 01.01 
IR807#
IR807# show cell 0 security
 
Active SIM = 1
SIM switchover attempts = 0 
Card Holder Verification (CHV1) = Disabled 
SIM Status = OK 
SIM User Operation Required = None 
Number of CHV1 Retries remaining = 3 
IR807#sh cellular 0 radio 
Radio power mode = online 
LTE Rx Channel Number = 2525 
LTE Tx Channel Number = 20525 
LTE Band = 5 
LTE Bandwidth = 10 MHz 
Current RSSI = -60 dBm 
Current RSRP = -86 dBm 
Current RSRQ = -10 dB 
Current SNR = 30.0 dB 
Physical Cell Id = 0x0 
Number of nearby cells = 1 
Idx PCI (Physical Cell Id) 
-------------------------------- 
1 0 
Radio Access Technology(RAT) Preference = LTE 
Radio Access Technology(RAT) Selected = LTE 
IR807# show cell 0 network
 
Current System Time = Sat Oct 10 9:12:59 2015 
Current Service Status = Normal 
Current Service = Packet switched 
Current Roaming Status = Home 
Network Selection Mode = Automatic 
Network = LTE 
Mobile Country Code (MCC) = 208 
Mobile Network Code (MNC) = 15 
Packet switch domain(PS) state = Attached 
Location Area Code (LAC) = 3910 
Cell ID = 222094374 
IR807#
IR807# show cell 0 radio
    
Radio power mode = ON
Channel Number = 3037
Current Band = Unknown
Current RSSI(RSCP) = -99 dBm
Current ECIO = -10 dBm
Radio Access Technology(RAT) Preference = AUTO
Radio Access Technology(RAT) Selected = UMTS ( UMTS/WCDMA )
IR807# show cell 0 network
 
Current System Time = Sat Oct 10 9:12:59 2015
Current Service Status = Normal
Current Service = Packet switched
Current Roaming Status = Home
Network Selection Mode = Automatic
Network = LTE
Mobile Country Code (MCC) = 208
Mobile Network Code (MNC) = 15
Packet switch domain(PS) state = Attached
Location Area Code (LAC) = 3910
Cell ID = 222094374

Note : A password must be added to the line configuration for security.

Get the line number associated to Cellular 0:

IR807#show line
Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
A 3 TTY - inout - - - 0 0 611/0 Ce0 – Single APN
I 8 TTY - inout - - - 0 0 0/0 Ce1 – Multi APN

Use one of the IR807 IP addresses along with 2000 + line number (2003)

IR807#telnet 1.1.1.1 2003
Trying 1.1.1.1, 2003 ... Open

Execute the 4G modem AT commands, for example AT!GSTATUS?:

at!gstatus?
Current Time: 1418Temperature: 37
Bootup Time: 5Mode: ONLINE
System mode: LTE PS state: Attached
LTE band: B5 LTE bw: 10 MHz
LTE Rx chan: 2525LTE Tx chan: 20525
EMM state: Registered Normal Service
EMM connection:RRC Connected RSSI (dBm): -60Tx Power: 1
RSRP (dBm): -86TAC: 0001 (1)
RSRQ (dB): -10Cell ID: 00000001 (1)
SINR (dB): 30.0
IMS Reg State: UNKNOWN IMS Mode: Not Support
IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP

Disconnect using “SHIFT+CONTROL+6+x”, then confirm:

IR807#disc
Closing connection to 1.1.1.1 [confirm]enter
IR807#

To check the IR807 4G modem firmware, execute the 4G modem AT commands after connecting to the modem:

IR807#telnet 1.1.1.1 2002
Trying 1.1.1.1, 2002 ... Open
Connecting to virtual console, enter Ctrl-^ followed by x,
then "disconnect" to return to router prompt
/ #
/ #
/ # echo -e 'at!gstatus?\r\n' > /dev/ttyUSB2
/ # at!gstatus?
!GSTATUS:
Current Time: 1418Temperature: 37
Bootup Time: 5Mode: ONLINE
System mode: LTE PS state: Attached
LTE band: B5 LTE bw: 10 MHz
LTE Rx chan: 2525LTE Tx chan: 20525
EMM state: Registered Normal Service
EMM connection:RRC Connected
RSSI (dBm): -60Tx Power: 1
RSRP (dBm): -86TAC: 0001 (1)
RSRQ (dB): -10Cell ID: 00000001 (1)
SINR (dB): 30.0
IMS Reg State: UNKNOWN IMS Mode: Not Support
IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP
OK
/ #
/ # echo -e 'at+cgcontrdp\r\n' > /dev/ttyUSB2
/ # at+cgcontrdp
+CGCONTRDP: 1,5,keysight,192.168.1.51,,,,
+CGCONTRDP: 2,8,keysight2,192.168.1.54,,,,
OK
/ # echo -e 'at+cgdcont?\r\n' > /dev/ttyUSB2
/ # at+cgdcont?
+CGDCONT: 1,"IP","keysight","0.0.0.0",0,0
+CGDCONT: 2,"IP","keysight2","0.0.0.0",0,0
+CGDCONT: 3,"IP","keysight","0.0.0.0",0,0
OK
/ # echo -e 'at!priid?\r\n' > /dev/ttyUSB2
/ # at!priid?
PRI Part Number: 9906722
Revision: 01.01
Carrier PRI: 9999999_9904367_SWI9X15Y_07.12.09.00_00_ATT_001.028_000OK
/ # echo -e 'at!impref?\r\n' > /dev/ttyUSB2
/ # at!impref?
!IMPREF:
preferred fw version: 07.12.09.00
preferred carrier name: ATT
preferred config name: ATT_001.028_000
current fw version: 07.12.09.00
current carrier name: ATT
current config name: ATT_001.028_000
OK
/ #
/ # echo -e 'at!gpsstatus?\r\n' > /dev/ttyUSB2
/ # at!gpsstatus?
Current time: 1980 01 06 6 00:45:40
1980 01 06 6 00:45:40 Last Fix Status = NONE
1980 01 06 6 00:45:40 Fix Session Status = NONE
No TTFF available
OK
/ # echo -e 'at!band=?\r\n' > /dev/ttyUSB2
/ # at!band=?
Index, Name
00, All Bands
02, North America 3G
07, merica
08, WCDMA ALL
09, LTE ALL
OK
/ #

Note: The following example illustrates how to perform an upgrade using only a single file. You will need to perform the same steps with each modem file (*.spk and *.nvu) to complete the firmware upgrade. For more information refer to the Cisco Firmware Upgrade Guide for Cellular Modems guide, “Upgrading the modem firmware manually”:

https://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/firmware/Firmware_Upgrade.html#pgfId-1023076

Perform the following steps to upgrade the modem firmware:

1. Go to the Cisco web page to download the latest certified firmware for your carrier by going to the following location: Products -> Cisco Interfaces and Modules -> LTE Wireless WAN Interfaces.

2. Create a directory in flash to host the firmware, which will be downloaded in step 3.

IR807# mkdir flash
Create directory filename [flash]? <enter
>
Created dir flash:/flash 

3. Download the firmware to the directory in the router flash over Ethernet/cellular /WAN interface. This can be done by hosting the firmware on an FTP or TFTP server, and connecting to that server via any WAN interface on the router. Below is a example showing the modem firmware downloaded onto the router flash over the FastEthernet interface:Note : Output edited for brevity.

IR807# copy tftp flash
Address or name of remote host []? 192.168.1.1
Source filename []? /<directory>
/WP75xx_07.12.09.00_Legato_Yacto_MCU.spk
Destination filename [WP75xx_07.12.09.00_Legato_Yacto_MCU.spk]?<enter
>
/<directory>
/ WP75xx_07.12.09.00_Legato_Yacto_MCU.spk
Accessing tftp://192.168.1.1//<directory>
/WP75xx_07.12.09.00_Legato_Yacto_MCU.spk...
Loading /<directory>
/WP75xx_07.12.09.00_Legato_Yacto_MCU.spk from 192.168.1.1 (via FastEthernet0): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 24444106 bytes]
24444106 bytes copied in 132.368 secs

4. Verify that the firmware is available on the newly created directory inside router flash by using the following command:

IR807# dir flash:WP75xx_07.12.09.00_Legato_Yacto_MCU
Directory of flash:/WP75xx_07.12.09.00_Legato_Yacto_MCU/
-rw- 24444106 Sep 4 2017 09:58:34 -08:00 WP75xx_07.12.09.00_Legato_Yacto_MCU.spk

5. Initiate a modem firmware upgrade using the microcode reload command. Ex : IR807# microcode reload cellular 0 lte modem-provision flash:<directory>?

IR807#microcode reload cellular 0 0 modem-provision flash:new-modem
Reload microcode? [confirm]<enter
>
Log status of firmware download in router flash system?[confirm]<enter
>
Firmware download status will be logged in flash:/fwlogfile
Microcode Reload Process launched for Cellular 33133484; hw type = 0x6F3
IR807#
*****************************************************
 The interface will be Shut Down for Firmware Upgrade 
 This will terminate any active data connections.
*****************************************************
*Sep  4 05:55:01.570: %LINK-5-CHANGED: Interface Cellular0, changed state to reset
*Sep  4 05:55:02.570: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0, changed state to down
*Sep  4 05:55:06.570: %LINK-5-CHANGED: Interface Cellular0, changed state to administratively down
*Sep  4 05:55:11.586: %LINK-5-CHANGED: Interface Cellular1, changed state to reset
*Sep  4 05:55:12.586: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular1, changed state to down
*Sep  4 05:55:16.586: %LINK-5-CHANGED: Interface Cellular1, 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[WP75xx_07.12.09.00_Legato_Yacto_MCU.spk] to the card [24444106 bytes]: 
Firmware file: WP75xx_07.12.09.00_Legato_Yacto_MCU.spk sent to the card
Modem Device ID: WP7502	 MODEM F/W Boot Version: SWI9X15Y_07.12.09.00 r34123 CARMD-EV-FRMWR1 2017/04/26 23:34:19
Modem F/W App Version: SWI9X15Y_07.12.09.00 r34123 CARMD-EV-FRMWR1 2017/04/26 23:34:19	 Modem SKU ID: 1103234
Modem Package Identifier: 1103234_9906721_WP7502_07.11.22.00_00_Cisco_001.000_000	 Modem Carrier String: 1
Modem PRI Ver: 01.00	 Modem Carrier Name: GENERIC
Modem Carrier Revision: 001.033_000
Firmware Upgrade is in Progress...
F/W Upgrade: Firmware Upgrade has Completed Successfully
IR807#

IR807#sh cellular 0 hardware
 
Modem Firmware Version = SWI9X15Y_07.12.09.00
Modem Firmware built = 2017/04/26 23:34:19
Hardware Version = 1.0
Device Model ID: WP7502
Package Identifier ID: 1103234_9906721_WP7502_07.11.22.00_00_Cisco_001.000_000
International Mobile Subscriber Identity (IMSI) = 001012345678901
International Mobile Equipment Identity (IMEI) = 354938080100459
Integrated Circuit Card ID (ICCID) = 89600114082100035643
Mobile Subscriber Integrated Services
Digital Network-Number (MSISDN) = 
Modem Status = Online
Current Modem Temperature = 33 deg C
PRI SKU ID = 1103234, PRI version = 001.033_000, Carrier = Generic
OEM PRI version = 01.00
IR807#

The AutoSim feature will identify the SIM card of the Carrier inserted and correspondingly load the correct modem firmware. The advantages of the AutoSim feature are:

• Ease of Ordering Carrier Specific SKUs
• Quicker failover times in dual-sim deployments

Auto-SIM is supported in Sierra wireless WP7504 modem on the IR807. The WP7502 and WP7601 modems do not support this feature. A CLI is available in the cellular controller to enable/disable Auto-SIM. The modem in Auto-SIM mode selects the right carrier firmware after a SIM slot switch and an automatic modem reset. During bootup, if the Auto-SIM configuration on the modem doesn’t match to the IOS configuration, the corresponding Auto-SIM or manual mode is pushed to the modem.

After an Auto-SIM configuration change, the modem is automatically reset; the default is “auto-sim” enabled:

controller cellular 0

[no] lte firmware auto-sim

If Auto-SIM is disabled and the modem is in manual mode, select a carrier with a new exec CLI:

cellular lte firmware-activate <firmware-index>

Enable/Disable Auto-SIM:

(config)#controller cellular 0
(config)# [no] lte firmware auto-sim  
 default is auto-sim enabled

Manual mode:

controller cellular 0
no lte firmware auto-sim

The following CLI shows the firmware-index of the carrier in the modem:

show cellular 0 firmware 

For additional information, see the following guide:

Cisco 4G LTE and Cisco 4G LTE-Advanced Network Interface Module Software Configuration Guide

This new feature allows the user to configure the mtu setting under the controller, up to a value of 2000, for the WP76xx modems. This requires setting the mtu on the corresponding cellular interface to match the same value as the controller.

This feature provides the reason for the modem going into a low power mode if the situation ever occurs. It uses the device power control information provided by the modem. A new CLI has been implemented show cellular <interface> radio details .

If the modem corresponding to the cellular interface crashes, the modem will reset itself and come back up. However, in order to debug the cause of the crash, a full crash dump can be captured on the modem. The steps to capture the crashdump are outlined in:

Generate 4G Modem Crash Dump

-or

https://www.cisco.com/c/en/us/td/docs/routers/access/800/819/user/guide/3G4G-enhancements-userguide.html#pgfId-1076594

A new CLI has been added to simplify the configuration to put the modem in a diagnostic mode upon a crash. The CLI is lte modem crash-action . The device can be set to either reset, or to boot and hold.

The following examples show the new functionality of the configuration CLI:

Router(config-controller)#lte modem crash-action ?
boot-and-hold  
Remain in crash state
reset          
Reset the modem on crash

This CLI will set the flag to either 1 or 0 for reset and boot and hold respectively. This is the same as AT command at!eroption= 0 / 1

The following examples show the new functionality of the exec CLI:
Router(config-controller)#lte modem crash-action ?
boot-and-hold Remain in crash state

This CLI will set the flag on the modem, to either 1 - reset or 0 - boot and hold respectively. This is the same as AT command at!eroption=? .

The following examples show the new functionality of the exec CLI:

router#show cellular <your interface> logs modem-crash-action
Current modem crash action: Reset

Note : This feature is only used while debugging modem crash dump and should be used ONLY as advised by Cisco TAC. Please do not enable this feature before consulting with Cisco TAC .