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Mohamed.Labib1
Beginner

881G-U-K9 Cellular interface always Inactive

hi All,

im having issue with Cisco 881G-U-K9 using Cellular interface after configuring the interface its not getting IP from the ISP and the cell profile is always INACTIVE.

appreciate your assistance.

 

interface config as follows:

interface Cellular0
 description CONNECTED TO INTERNET
 ip address negotiated
 ip nat outside
 ip virtual-reassembly in
 encapsulation ppp
 dialer in-band
 no ip proxy-arp
 dialer idle-timeout 0
 dialer string vodafone
 dialer-group 1
 async mode interactive
 ppp authentication chap pap callin
 ppp chap hostname internet
 ppp chap password 0 internet
 ppp ipcp dns request
 crypto map vpn

chat-script vodafone "" "ATDT*99*1#" TIMEOUT 30 "CONNECT"

line 3
 exec-timeout 0 0
 script dialer vodafone
 login
 modem InOut
 no exec
 rxspeed 7200000
 txspeed 5760000

 

2 REPLIES 2
Marcel van Dorp
Beginner

did you specify a dialer-list to define interesting traffic? Without that the router will not know when to bring up the interface

 

add this under global config: dialer-list 1 protocol ip permit

and a static route using the interface: ip route 0.0.0.0 0.0.0.0 Cellular0

proper nat rule

 

and, do not forget to generate interesting traffic, simple ping will do.

You can abuse "ip sla" with a low frequency to bring the connection up after a router reboot. Better source that from a loopback (include in your nat!)

 

sample:

ip sla 1
 icmp-echo 8.8.8.8 source-interface Loopback1
 frequency 10

 

followed by: ip sla schedule 1 life forever start-time now

 

This discussion has been reposted from Additional Communities to the WAN, Routing and Switching community.