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Cisco 1841 with 3G HWIC and 3G ISP

Ditter
Level 4
Level 4

Hi to all ,

i am trying to figure out why i can't have a cellular connection to my ISP , although having already read and tried various commands from different threads and sites.

My config is pretty simple :

interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!

interface Cellular0/0/0
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer in-band
dialer idle-timeout 0
dialer string gsm
dialer-group 1
ppp authentication chap pap
ppp chap hostname <--omitted-->
ppp chap password 0 <---omitted-->
ppp pap sent-username interface Cellular0/0/0

ppp ipcp dns request

i

dialer-list 1 protocol ip permit
ip route 0.0.0.0 0.0.0.0 Cellular0/0/0
ip nat inside source list NAT interface Cellular0/0/0 overload

The problem is that the cellular interface does not come up.

I have finally configured in the GSM modem the following two commands:

cellular 0/0/0 gsm profile create 1 internet.static <--- This is given by my provider

and finally unlocked my SIM card:

cellular 0/0/0 gsm sim unlock 7892

The show command on cellular 0/0/0 profile shows :

Router#show cellular 0/0/0 profile 1
Profile 1 = INACTIVE*
--------
PDP Type = IPv4
Access Point Name (APN) = internet.static
Authentication = None
Username: , Password:

* - Default profile

and:

Router#sh int cellular 0/0/0
Cellular0/0/0 is up (spoofing), line protocol is up (spoofing)
Hardware is HSDPA/UMTS/EDGE/GPRS-850/900/1800/1900/2100MHz
Internet address will be negotiated using IPCP
MTU 1500 bytes, BW 9 Kbit/sec, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Closed, loopback not set
Keepalive not supported
Last input never, output never, output hang never
Last clearing of "show interface" counters 00:28:31
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/0/16 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 6 kilobits/sec
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 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 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

 

Any ideas why it does not connect to the ISP?

Thanks,

Ditter.

 

3 Replies 3

Enes Simnica
Level 1
Level 1

hey there. from show cell 0/0/0 profile, I can see that the profile is marked Inactive. This could indicate an issue with the profile activation.

So try this: cellular 0/0/0 gsm activate profile 1 and then check again with show cell 0/0/0 profi 1.

Other stuff that you can check are: APN, Diales and ppp negotiation, Sim card and network issues, also signal strength/. But while u there, check nat config also.

hope this will help!

-Enes

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Ditter
Level 4
Level 4

Hi Enes

thanks for the reply

 

but there is no command to activate a profile on a cisco 1841 ((C1841-IPBASEK9-M), Version 12.4(24)T)

What   i mean:

Router#cellular 0/0/0 gsm ?
band GSM Bands
plmn PLMN Commands
profile Profile management commands
sim SIM card lock/unlock commands

Router#cellular 0/0/0 gsm profile ?
create Create/Edit a Profile
delete Delete a profile

Thanks.

 

d*mn I forgot how old this device is, my bad. I'll check some documentation and also try to get this router image so I can lab some scenarios...

-Enes

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