cellular interface not getting an ip address

[daniel f.]

hello together,

i have a router with 4g connection, but i dont get an ip address assigned to my ce0 interface.

chat script is working, ce0 interface get up/up but no address is assigned, i can even see that dns information is pushed from the provider to the profile i use. below is any configuration and show output, maybe someone has a clue on this?

chat-script lte "" "AT!SCACT=1,1" TIMEOUT 60 "OK"

interface Cellular0
ip address negotiated
ip nat outside
ip virtual-reassembly in max-reassemblies 1024
encapsulation slip
load-interval 30
dialer in-band
dialer idle-timeout 0
dialer string lte
dialer-group 1
no peer default ip address
async mode interactive

ip route 0.0.0.0 0.0.0.0 Cellular0

dialer-list 1 protocol ip permit

line 3
script dialer lte
modem InOut
no exec
transport preferred none
transport output none
speed 384000


router123#show cellular 0 al
Hardware Information
====================
Modem Firmware Version = SWI9X15C_05.05.58.00
Modem Firmware built = 2015/03/04 21:30:23
Hardware Version = 1.0
Device Model ID: MC7304
Package Identifier ID: 1102029_9903299_MC7304_05.05.58.00_00_Cisco_005.012_000
International Mobile Subscriber Identity (IMSI) = 625021012134292
International Mobile Equipment Identity (IMEI) = 352761065083041
Integrated Circuit Card ID (ICCID) = 89238020219000145468
Mobile Subscriber Integrated Services
Digital Network-Number (MSISDN) =
Modem Status = Online
Current Modem Temperature = 35 deg C
PRI SKU ID = 1102029, PRI version = 005.026_000, Carrier = Generic
OEM PRI version = 05.12

Profile Information
====================
Profile password Encryption level: 7

Profile 1 = ACTIVE* **
--------
PDP Type = IPv4
Access Point Name (APN) = tmais
Authentication = None
Primary DNS address = 8.8.8.8
Secondary DNS address = 10.50.9.6

* - Default profile
** - LTE attach profile

Configured default profile for active SIM 0 is profile 1.

Data Connection Information
===========================
Profile 1, Packet Session Status = ACTIVE
Cellular0:
Data Transmitted = 2060 bytes, Received = 260 bytes
Primary DNS address = 8.8.8.8
Secondary DNS address = 10.50.9.6
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
Profile 7, Packet Session Status = INACTIVE
Profile 8, Packet Session Status = INACTIVE
Profile 9, Packet Session Status = INACTIVE
Profile 10, Packet Session Status = INACTIVE
Profile 11, Packet Session Status = INACTIVE
Profile 12, Packet Session Status = INACTIVE
Profile 13, Packet Session Status = INACTIVE
Profile 14, Packet Session Status = INACTIVE
Profile 15, Packet Session Status = INACTIVE
Profile 16, Packet Session Status = INACTIVE

Network Information
===================
Current System Time = Thu Oct 24 11:25:48 2019
Current Service Status = Normal
Current Service = Packet switched
Current Roaming Status = Home
Network Selection Mode = Automatic
Network = UNITEL T+
Mobile Country Code (MCC) = 625
Mobile Network Code (MNC) = 2
Packet switch domain(PS) state = Attached
Location Area Code (LAC) = 311
Cell ID = 3075
Network MTU is not Available

Radio Information
=================
Radio power mode = online
Channel Number = 10662
Current Band = WCDMA 2100
Current RSSI(RSCP) = -94 dBm
Current ECIO = -5 dBm
Primary Scrambling Code = 0x95
Number of nearby cells = 2
Idx PSC (Primary Scrambling Code)
-------------------------------------
1 148
2 150
Radio Access Technology(RAT) Preference = AUTO
Radio Access Technology(RAT) Selected = UMTS

Modem Security Information
==========================
Active SIM = 0
SIM switchover attempts = 0
Card Holder Verification (CHV1) = Enabled
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 Status: GPS location cannot be acquired
GPS auto tracking status: disabled (Mode is not set)
GPS auto tracking config: disabled
GPS Mode Configured: not configured/unknown
Last Location Fix Error: Not Available [0x0]

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 this platform.

Modem Crashdump Information
===========================
Chassis Model Name is C881G-4G-GA-K9
Platform is MC73xx based
Modem crashdump logging: off

router123# sh int ce0
Cellular0 is up, line protocol is up
Hardware is 4G WWAN Modem - Global (Europe & Australia) Multimode LTE/DC-HSPA+/HSPA+/HSPA/U
Internet address will be assigned dynamically by the network
MTU 1500 bytes, BW 384 Kbit/sec, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation SLIP, loopback not set
Keepalive not supported
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/10 (size/max)
30 second input rate 0 bits/sec, 0 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
18 packets output, 1800 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=down DSR=down DTR=up RTS=up CTS=up

router123#sh ip int brie
Interface IP-Address OK? Method Status Protocol
Cellular0 unassigned YES NVRAM up up

[Georg Pauwen]

Hello,

post the full running config. Is this an IOS release prior to 15.3 ?

[daniel f.]

System image file is "flash:c800-universalk9-mz.SPA.157-3.M.bin"

Current configuration : 7775 bytes
!
! Last configuration change at 13:24:57 MEST Thu Oct 24 2019 by rob
!
version 15.7
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
service internal
!
hostname xxxxx
!
boot-start-marker
boot-end-marker
!
!
logging buffered 128000
no logging console
enable secret 5 xxxxx
!
aaa new-model
!
!
aaa authentication login default local
!
!
!
!
!
aaa session-id common
clock timezone MET 1 0
clock summer-time MEST recurring last Sun Mar 2:00 last Sun Oct 3:00
!
crypto pki trustpoint TP-self-signed-1245090963
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-1245090963
revocation-check none
rsakeypair TP-self-signed-1245090963
!
!
crypto pki certificate chain TP-self-signed-1245090963
certificate self-signed 01
xxx
quit
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!

!
!
!
!
no ip domain lookup
ip domain name xxx
ip inspect WAAS flush-timeout 10
ip cef
no ipv6 cef
!
!
!
!
!
multilink bundle-name authenticated
!
!
chat-script lte "" "AT!SCACT=1,1" TIMEOUT 60 "OK"
!
!
!
!
!
license udi pid C881G-4G-GA-K9 sn xxxx
!
!
username rob privilege 15 secret 5 $1$AOLN$2MoxPhQLThw1DrndjaOgC0
!
redundancy
notification-timer 120000
!
!
!
!
!
controller Cellular 0
lte sim authenticate 7 xxxx slot 0
lte modem link-recovery rssi onset-threshold -110
lte modem link-recovery monitor-timer 20
lte modem link-recovery wait-timer 10
lte modem link-recovery debounce-count 6
!
!
!
crypto isakmp policy 2
encr aes 256
authentication pre-share
group 14
crypto isakmp key xxxx address 0.0.0.0
crypto isakmp keepalive 10
!
!
crypto ipsec transform-set RobSet esp-aes 256 esp-sha-hmac
mode transport
!
crypto ipsec profile RobProfile
set transform-set RobSet
set pfs group5
!
!
!
!
!
!
!
!
interface Loopback0
ip address 10.230.237.4 255.255.255.0
ip ospf network point-to-point
!
interface Tunnel0
bandwidth 100000
ip address 172.16.5.50 255.255.255.0
no ip redirects
ip mtu 1400
ip nat outside
ip nhrp authentication test
ip nhrp map 172.16.5.2 xxxx
ip nhrp map multicast xxxx
ip nhrp map 172.16.5.1 xxxx
ip nhrp map multicast xxxx
ip nhrp network-id 100000
ip nhrp holdtime 300
ip nhrp nhs 172.16.5.1
ip nhrp nhs 172.16.5.2
ip virtual-reassembly in
ip ospf network point-to-multipoint
ip ospf cost 5000
delay 1000
tunnel source Cellular0
tunnel mode gre multipoint
tunnel key 100000
tunnel protection ipsec profile RobProfile
!
interface Cellular0
ip address negotiated
ip nat outside
ip virtual-reassembly in max-reassemblies 1024
encapsulation slip
load-interval 30
dialer in-band
dialer idle-timeout 0
dialer string lte
dialer-group 1
no peer default ip address
async mode interactive
!
interface Cellular1
no ip address
encapsulation slip
!
interface FastEthernet0
no ip address
!
interface FastEthernet1
no ip address
!
interface FastEthernet2
no ip address
!
interface FastEthernet3
description crosslink to xxxx
switchport access vlan 2
no ip address
!
interface FastEthernet4
no ip address
shutdown
duplex auto
speed auto
!
interface Vlan1
description Inside
ip address 192.168.36.4 255.255.255.0
no ip redirects
no ip proxy-arp
ip nat inside
ip virtual-reassembly in
standby 1 ip 192.168.36.2
standby 1 preempt
standby 1 name NAT
ip tcp adjust-mss 1360
!
interface Vlan2
ip address 172.16.0.6 255.255.255.252
ip nat inside
ip virtual-reassembly in
!
!
router eigrp 10
default-metric 10000 100 255 1 1500
network 172.16.0.4 0.0.0.3
redistribute connected route-map 2-eigrp
redistribute ospf 1 route-map routes-from-ospf
distance eigrp 80 90
passive-interface default
no passive-interface Vlan2
!
router ospf 1
router-id 172.16.5.49
redistribute connected metric 5000 subnets route-map 2ospf
network 172.16.5.0 0.0.0.255 area 1
distribute-list route-map ospf-filter in
!
ip forward-protocol nd
no ip http server
no ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
!
ip nat inside source static network 192.168.36.0 10.230.237.0 /24
ip route 0.0.0.0 0.0.0.0 Cellular0
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
!
ip access-list extended inside
permit icmp any any
permit ip xxxxx 0.0.0.255 any
permit ip host xxxxx any
!
!
ip prefix-list Connected seq 10 permit 10.230.237.0/24
!
ip prefix-list Connected2 seq 5 permit 192.168.36.0/24
!
ip prefix-list from-ospf seq 5 permit 10.0.0.0/8
logging host 10.147.8.101
logging host 10.147.10.201
logging host 10.147.10.202
dialer-list 1 protocol ip permit
ipv6 ioam timestamp
!
route-map routes-from-ospf permit 10
match ip address prefix-list from-ospf
!
route-map ospf-filter permit 10
match route-type internal
!
route-map 2ospf permit 10
match ip address prefix-list Connected
!
route-map 2-eigrp permit 10
match ip address prefix-list Connected2
!
snmp-server community xxxx RO 99
snmp-server community xxxx RO
snmp-server community xxxx RO
snmp-server location xxxx
snmp-server contact xxxx
snmp-server host 10.147.8.101 version 2c xxxx
!
!
!
control-plane
!
!
!
mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
!
mgcp profile default
!
!
!
!
!
!
vstack
!
line con 0
no modem enable
line aux 0
line 2
no activation-character
no exec
transport preferred none
stopbits 1
line 3
script dialer lte
modem InOut
no exec
transport preferred none
transport output none
speed 384000
line 8
no exec
speed 384000
line vty 0 4
privilege level 15
transport input ssh
transport output ssh
line vty 5 15
privilege level 15
transport input ssh
transport output ssh
!
scheduler allocate 20000 1000
ntp server 10.147.10.41
ntp server 10.147.10.42
!
!
!
!
!
event manager applet reset3g
event routing network 10.0.0.0/8 type add protocol EIGRP
action 1 wait 9
action 2.1 cli command "enable"
action 2.2 cli command "conf t"
action 2.3 cli command "interface cellular 0"
action 2.4 cli command "shutdown"
action 2.5 cli command "end"
action 3 wait 10
action 4.1 cli command "enable"
action 4.2 cli command "conf t"
action 4.3 cli command "interface cellular 0"
action 4.4 cli command "no shutdown"
action 4.5 cli command "end"
!

[Georg Pauwen · Accepted solution]

Hello,

change your chat script to:

chat-script lte "" "AT!CALL" TIMEOUT 20 "OK"

and line 3 to:

line 3
script dialer lte
modem InOut
no exec
transport input all
transport output all
speed 384000

[daniel f.]

hey georg, its now working,

line 3 part was by mistake but the chat script i hadnt understand what to put in there.

thank you very much