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Cisco 880G+7 3G connection issue

startx001
Level 1
Level 1

Hi all  ,

 

There is a problem with 3G all time on 880G router . It seem that i doing someting wrong or cisco modem is not working well 

On few modems i cant get 3g data connection , and when that same SIM card i put in phone internet works , but on 880G router dont want.

 

How to get this to work stable ?

boot system flash flash:c880data-universalk9-mz.154-2.T1.bin

chat-script hspa-R7 "" "AT!SCACT=1,1" TIMEOUT 60 "OK"

!

interface Cellular0
 description WAN towards MTS
 ip address negotiated
 ip mtu 1452
 ip virtual-reassembly in
 encapsulation slip
 load-interval 60
 dialer in-band
 dialer idle-timeout 2147483
 dialer string hspa-R7
 dialer-group 1
 async mode interactive

!

dialer-list 1 protocol ip permit

!

line 3
 exec-timeout 0 0
 script dialer hspa-R7
 login
 modem InOut
 no exec
 transport input all
 transport output all

!

cellular 0 gsm band wcdma-all-bands

cellular 0 gsm profile create 1 gprswap chap mts 064

cellular 0 gsm plmn select auto

!

 

#sh cellular 0 network 
Current Service Status = Normal, Service Error = None
Current Service = Combined
Packet Service = UMTS/WCDMA (Attached)
Packet Session Status = Inactive    <-----
Current Roaming Status = Home
Network Selection Mode = Automatic
Country = SRB, Network = MTS
Mobile Country Code (MCC) = 220
Mobile Network Code (MNC) = 3
Location Area Code (LAC) = 40203
Routing Area Code (RAC) = 1
Cell ID = 35420
Primary Scrambling Code = 236
PLMN Selection = Automatic
Registered PLMN =  , Abbreviated = 
Service Provider = mt:s

!

 

#sh cellular 0 connection 
Data Transmitted = 0 bytes, Received = 0 bytes
Profile 1, Packet Session Status = INACTIVE
        Inactivity Reason = Service option not subscribed
Profile 2, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 3, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 4, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 5, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 6, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 7, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 8, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 9, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 10, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 11, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 12, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 13, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 14, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 15, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state
Profile 16, Packet Session Status = INACTIVE
        Inactivity Reason = Normal inactivate state

 

!

#sh cellular 0 profile 

Profile 1 = INACTIVE* **
--------
PDP Type = IPv4
Access Point Name (APN) = gprswap
Authentication = CHAP
Username: mts
Password: 064

!

 

#sh cellular 0 hardware 

Modem Firmware Version = T1_0_3_2AP R361 CNSZ
Modem Firmware built = 04/15/11
Hardware Version = 1.0
International Mobile Subscriber Identity (IMSI) = 
International Mobile Equipment Identity (IMEI) = 357115041460655
Integrated Circuit Card ID (ICCID) = 89381030000075802506
Mobile Subscriber International Subscriber
IDentity Number (MSISDN) = 
Factory Serial Number (FSN) = CC3022411121011
Modem Status = Online
Current Modem Temperature = 28 deg C, State = Normal
PRI SKU ID = 9900198, SKU Rev. = 1.2

 

!

 

#sh cellular 0 radio 
Radio power mode = ON
Current Band = WCDMA 2100, Channel Number = 10663
Current RSSI(RSCP) = -91 dBm
Band Selected = WCDMA All(800/850/900/1900/IMT 2000)
Number of nearby cells = 1
Cell 1
        Primary Scrambling Code = 0xEC
        RSCP = -90 dBm, ECIO = -11 dBm

 

!

Other issue that i want ot check , after reload of router it seems like ip sla dont want to start 

config is :

 

ip sla 1
 icmp-echo 8.8.8.8
 frequency 20
ip sla schedule 1 life forever start-time now


track 1 ip route 8.8.8.8 255.255.255.255 reachability

ip route 8.8.8.8 255.255.255.255 Cellular0

 

I need this because after router reload , i need some packets to get cellular int up and so on ...

 

Any idea?

Please i need urent help 

 

KR

VZ

 

 

 

 

 

4 Replies 4

Hello.

For 3G you need "ppp" encapsulation; "slip" is for GSM and 4G.

You would better make your connection persistent, so won't have to wait for interesting traffic (and face an issue with SLA).

Also I think it's better to configure Dialer interface instead of physical one.

PS: take a look at VPN Remote Site over 3G/4G guide.

Hi ,

I understand , but when i issue command i get 

ustanicka(config)#int cellular 0
ustanicka(config-if)#encapsulation ?
  ppp   Point-to-Point protocol
  slip  Serial Line IP

ustanicka(config-if)#encapsulation ppp 
Cellular0: Only SLIP encapsulation supported

 

Any idea?

 

 

Thx for document , i solved this .

Still i have another issue with dmvpm because nat over 3g .

 

     9 212.200.65.244       172.29.3.1    UP 00:20:37    DN
     0 UNKNOWN              172.29.3.5  NHRP    never    IX
     0 UNKNOWN              172.29.3.8  NHRP    never    IX
     0 UNKNOWN              172.29.3.9  NHRP    never    IX
     0 212.200.65.244      172.29.3.13    UP 00:01:10    DN
                           172.29.3.21    UP 00:27:48    DN
     0 UNKNOWN             172.29.3.25  NHRP    never    IX
     0 UNKNOWN             172.29.3.30  NHRP    never    IX
     0 212.200.65.244      172.29.3.34    UP 00:15:10    DN
     1 212.200.65.243      172.29.3.26    UP 00:07:28    DN

 

As you can see few sites use same (nated ) public ip , so some dmvpn tunnels dont works.

 

Any solution for this ?

Hello.

Yes, buy public IP from your 3G provider.

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