Router C1101 Cellular interface down

[KarolineSoares76078]

Hello,

I'm working with a C1101-4PLTEP router and trying to bring the Cellular interface UP, but there are some issues.

The SIM cards are working on a mobile phone. On the router, they were removed and inserted again.

Some logs I've been running into

*Dec 22 11:32:47.101 GMT-2: Cellular0/2/0 Modem Attached First Time: 0, Tech Mode: 0, Modem Mode: 0, curr_dl_bytes : 0
*Dec 22 11:32:47.101 GMT-2: Cellular0/2/0 RSSI : 128, PS State: 0, EMM REG State: 0, is_downlink_rx: 0
*Dec 22 11:32:47.101 GMT-2: MSD: Modem is NOT yet attached in LTE mode

Dec 22 15:33:34.928 GMT-2: DDR: Dialer Watch: Dial Reason: Secondary of group 1 AVAILABLE
*Dec 22 15:33:34.928 GMT-2: DDR: Dialer Watch: watch-group = 1,
*Dec 22 15:33:34.928 GMT-2: DDR: dialing secondary by dialer string lte on Ce0/2/0
*Dec 22 15:33:34.928 GMT-2: DDR: Dialer Watch: Stale dialer watch group 1 found on Ce0/2/0
*Dec 22 15:33:34.928 GMT-2: Ce0/2/0 DDR: Attempting to dial lteCellular0/2/0: Data connection setup failed sincemodem (PS=2,EMM=0) unattached
*Dec 22 15:33:34.928 GMT-2: Ce0/2/0 DDR: Unable to dial lte.
*Dec 22 15:33:34.928 GMT-2: Ce0/2/0 DDR: Dialer Watch: resetting call in progress

Has anyone run into a similar issue?

[MHM Cisco World]

share the config if you can 
MHM

[KarolineSoares76078]

Hello, I attached the router config.

[balaji.bandi]

Where did you get this configure from ?

Are you looking your cellular to in VRF  and you want to VPN ?

First i would suggest make sure your cellular working before you do any further configuration.

#cellular 0/2/0 lte profile create 1 provider.com

interface Cellular0/2/0
description CONEXAO 3G/4G VIVO
bandwidth 512
ip nat outside
!
ip address negotiated
no ip unreachables
dialer in-band
dialer idle-timeout 300
dialer watch-group 1
dialer-group 1
pulse-time 1
ip virtual-reassembly
!
interface GigabitEthernet0/0/0 ip address 192.168.1.1 255.255.255.0 ip nat inside
!
ip nat inside source list 1 interface Cellular0/2/0 overload 
ip route 0.0.0.0 0.0.0.0 Cellular0/2/0 
!
access-list 1 permit any 
dialer-list 1 protocol ip permit

checks 
==========
#show cellular 0/2/0 radio
#show cellular 0/2/0 connection
#show interfaces cellular 0/2/0
#show ip interface brief

 For reference some document :

https://www.cisco.com/c/en/us/td/docs/routers/access/1100/software/configuration/xe-16-7/cisco_1100_series_swcfg_xe_16_7_x/cisco_1100_series_swcfg_chapter_01011.html

[liviu.gheorghe]

Hello @KarolineSoares76078 ,

I believe you are missing some commands from your config:

1. Can you change the modem chat script to allow a greater timeout: 

chat-script lte "" "AT!CALL" TIMEOUT 60 "OK"

2. Add the following to your cellular interface:

interface Cellular0/2/0
encapsulation slip
dialer string lte
async mode interactive

3. On the line associated with the cellular modem - I assume it's line 0/2/0 but you should check - you should have the following:

line 0/2/0
script dialer lte
modem InOut
no exec

[KarolineSoares76078]

Thank you for the response.
I changed timeout to 60, but the commands under interface Cellular0/2/0 are not accepted.

[Georg Pauwen]

Hello,

can you show the output of:

show cellular 0/2/0 profile

show cellular 0/2/0 radio

--> The SIM cards are working on a mobile phone. On the router, they were removed and inserted again.

Does that mean your SIM card worked before in a router ? Who is your provider ?

[KarolineSoares76078]

Attached is the output for the show cellular commands.

[balaji.bandi]

*Feb 2 11:26:38.047 GMT-2: %CELLWAN-2-SIM_NOT_PRESENT: [Cellular0/2/0]: SIM is not present in Slot 1

Do you have SIM installed ?

who is the provider ?

Modem Security Information
==========================
Active SIM = 1
SIM switchover attempts = 1
Card Holder Verification (CHV1) = Disabled
SIM Status = Not inserted
SIM User Operation Required = None
Number of CHV1 Retries remaining = 0

check some example working one in this BLOG :

https://wannabelab.blogspot.com/2020/01/configuring-cisco-1100-lte-advanced.html

[KarolineSoares76078]

Yes, the SIM cards are installed. 
We're in Brazil, so first one provider is Vivo, and second one is TIM.

The router doesn't accept this commands under interface Cellular:

lte modem link-recovery rssi onset-threshold -110
 lte modem link-recovery monitor-timer 20
 lte modem link-recovery wait-timer 10