EHWIC-4G-LTE-G Config, 1900 Series Router, EE Connection

[pr-graves-2011]

Thank you in advance for any support!

I'm configuring a 1900 series router with a 4g module installed and a working SIM, but I am not receiving an IP from EE. My cellular interface is up and the cellular module has an APN configured. All config seen below. Could someone please have a read through and check for what I am missing. The statuses on the cell interface are all up but still not receiving an IP...

LTE Profile....

Router#cellular 0/0/0 lte profile create 1 everywhere pap eesecure secure

Cellular Interface...

Router>sh int cel0/0/0
Cellular0/0/0 is up (spoofing), line protocol is up (spoofing)
Hardware is 4G WWAN EHWIC - Global Multimode LTE/DC-HSPA+/HSPA+/HSPA/UMTS/EDGE/GPRS
Internet address will be assigned dynamically by the network
MTU 1500 bytes, BW 50000 Kbit/sec, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation SLIP, loopback not set
Keepalive not supported
Last input 00:15:11, 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)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
4 packets input, 112 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
0 packets output, 0 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=up DSR=up DTR=up RTS=up CTS=up

FULL Config.....

Current configuration : 1933 bytes
!
version 15.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
boot-start-marker
boot-end-marker
no aaa new-model
ip cef

no ipv6 cef
multilink bundle-name authenticated

chat-script lte"" "AT!CALL" TIMEOUT 60 "OK"
license udi pid CISCO1921/K9 sn FCZ1735C3ML

controller Cellular 0/0

interface Embedded-Service-Engine0/0
no ip address
shutdown

interface GigabitEthernet0/0
no ip address
shutdown
duplex auto
speed auto

interface GigabitEthernet0/1
no ip address
shutdown
duplex auto
speed auto

interface GigabitEthernet0/1/0
switchport access vlan 20
no ip address

interface GigabitEthernet0/1/1
switchport access vlan 20
no ip address

interface GigabitEthernet0/1/2
switchport access vlan 20
no ip address

interface GigabitEthernet0/1/3
switchport access vlan 20
no ip address

interface Cellular0/0/0
ip address negotiated
ip nat outside
ip virtual-reassembly in
encapsulation slip
dialer in-band
dialer string LTE
dialer-group 1

interface Vlan1
no ip address

interface Vlan20
ip address 10.0.2.1 255.255.255.0
ip nat inside
ip virtual-reassembly in


router eigrp 1
network 0.0.0.0
network 10.0.2.0 0.0.0.255

ip forward-protocol nd

no ip http server
no ip http secure-server

ip nat inside source list NAT-VLAN20 interface Cellular0/0/0 overload
ip route 0.0.0.0 0.0.0.0 Cellular0/0/0

ip access-list standard NAT-VLAN20
permit 10.0.2.0 0.0.0.255

access-list 1 permit any
dialer-list 1 protocol ip list 1

control-plane

line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line 0/0/0
script dialer LTE
no exec
rxspeed 100000000
txspeed 50000000
line vty 0 4
login
transport input all

scheduler allocate 20000 1000

end

[Giuseppe Larosa]

Hello @pr-graves-2011 ,

your chat script is named lte and not LTE

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

in interface config you have:

>> interface Cellular0/0/0
ip address negotiated
ip nat outside
ip virtual-reassembly in
encapsulation slip
dialer in-band
>>>>>>>> dialer string LTE

change it to dialer string lte

Hope to help

Giuseppe

[pr-graves-2011]

I will give this a go..... 1st time working out configuring 4G connections. Thank you so much for replying and I'll keep you posted how it goes!

[pr-graves-2011]

I had the following line config missing....

line 0/0/0
exec-timeout 0 0
script dialer LTE
modem InOut
no exec

Currently seeing this with dialer debugging....

Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:

*Jun 28 10:22:34.799: Ce0/0/0 DDR: place call
*Jun 28 10:22:34.799: Ce0/0/0 DDR: Dialing cause ip (s=10.0.2.1, d=8.8.8.8)
*Jun 28 10:22:34.799: Ce0/0/0 DDR: Attempting to dial LTE
*Jun 28 10:22:34.799: CHAT0/0/0: Attempting async line dialer script
*Jun 28 10:22:34.799: CHAT0/0/0: Dialing using Modem script: LTE"" & System script: none
*Jun 28 10:22:34.799: CHAT0/0/0: process started
*Jun 28 10:22:34.799: CHAT0/0/0: Asserting DTR
*Jun 28 10:22:34.799: CHAT0/0/0: Chat script LTE"" started...
*Jun 28 10:22:39.799: CHAT0/0/0: Chat script LTE"" finished, status = Connection timed out; remote host not responding
*Jun 28 10:22:39.799: Ce0/0/0 DDR: disconnecting call..
Success rate is 0 percent (0/5)
Router#

Current cell interface status...

Cellular0/0/0 is up (spoofing), line protocol is up (spoofing)
Hardware is 4G WWAN EHWIC - Global Multimode LTE/DC-HSPA+/HSPA+/HSPA/UMTS/EDGE/GPRS
Internet address will be assigned dynamically by the network
MTU 1500 bytes, BW 9 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)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute 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
0 packets output, 0 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

....so my DCD and DSR are now down. Not sure what is going on here. Any other pointers please?

Many thanks!

[Giuseppe Larosa · Accepted solution]

Helllo @pr-graves-2011 ,

>> Jun 28 10:22:34.799: CHAT0/0/0: Dialing using Modem script: LTE"" & System script: none

please config under line0/0/0

line 0/0/0

no script dialer LTE

script dialer lte

LTE is a null string for the router

Hope to help

Giuseppe

[pr-graves-2011]

Thanks again Guiseppe!

The dialler just seems to be timing out now....

*Jun 28 13:32:03.171: Ce0/0/0 DDR: place call
*Jun 28 13:32:03.171: Ce0/0/0 DDR: Dialing cause ip (s=10.0.2.5, d=8.8.8.8)
*Jun 28 13:32:03.171: Ce0/0/0 DDR: Attempting to dial lte
*Jun 28 13:32:03.171: CHAT0/0/0: Attempting async line dialer script
*Jun 28 13:32:03.171: CHAT0/0/0: Dialing using Modem script: lte"" & System script: none
*Jun 28 13:32:03.171: CHAT0/0/0: process started
*Jun 28 13:32:03.171: CHAT0/0/0: Asserting DTR
*Jun 28 13:32:03.171: CHAT0/0/0: Chat script lte"" started
*Jun 28 13:32:08.171: CHAT0/0/0: Chat script lte"" finished, status = Connection timed out; remote host not responding

show cel0/0/0 ....

DCD=down DSR=up DTR=down RTS=up CTS=up

....I think this is now down to bad signalling, right? I haven't made any changes to the profile since the start of this and everything with the SIM etc seemed okay at the start.

Radio Information
=================
Radio power mode = ON
Current RSSI = -61 dBm
LTE Technology Preference = AUTO
LTE Technology Selected = LTE

Network Information
===================
Current Service Status = Normal
Current Service = Packet switched
Current Roaming Status = Home
Network Selection Mode = Automatic
Mobile Country Code (MCC) = 234
Mobile Network Code (MNC) = 30
Packet switch domain(PS) state = Attached
Registration(EMM) state = Registered

Data Connection Information
===========================
Data Transmitted = 0 bytes, Received = 0 bytes
Profile 1, Packet Session Status = INACTIVE
Inactivity Reason = Unknown

Thanks again!

[Giuseppe Larosa]

Hello @pr-graves-2011 ,

yes now you have the correct script invoked but the signal level may be too low

>> Current RSSI = -61 dBm

Hope to help

Giuseppe

[pr-graves-2011]

I moved the router and now RSSI = -84, so no better here unfortunately.

The chat-script is finishing right after starting as seen here...

*Jun 28 16:35:54.087: CHAT0/0/0: Chat script lte"" started
*Jun 28 16:35:59.087: CHAT0/0/0: Chat script lte"" finished, status = Connection timed out; remote host not responding

Many thanks for your replies!