Monthly Archives - December 2015

Optus 3G Configuration Example for Cisco 887 Modem

Optus 3G Configuration Example for Cisco 887 Modem

If you need to configure a Cisco 887 to use a 3G sim, we have created a sample working configuration below.

Set your profile 1st

You may need to change the APN from yesbusinessip to the one Optus supplies

cellular 0 gsm profile create 1 yesbusinessip chap optus optus ipv4
cellular 0 gsm prl-region 3
cellular 0 gsm band auto-band


Router Configuration
[conf t] version 15.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname router
security authentication failure rate 3 log
security passwords min-length 6
logging buffered 51200 warnings
logging console critical
aaa new-model
aaa authorization exec local_authorisation local
aaa session-id common
clock timezone AEST 10 0
clock summer-time AEST recurring 1 Sun Oct 2:00 3 Sun Apr 3:00
ip cef
no ipv6 cef
multilink bundle-name authenticated
chat-script cellinternet “” “AT!SCACT=1,1” TIMEOUT 60 “OK”
controller Cellular 0
ip ssh time-out 60
ip ssh authentication-retries 2
ip ssh version 2
interface FastEthernet0
no ip address
interface FastEthernet1
no ip address
interface FastEthernet2
no ip address
interface FastEthernet3
no ip address
interface FastEthernet4
no ip address
duplex auto
speed auto
interface Cellular0
description 3G SIM Slot 0
ip address negotiated
ip nat outside
ip virtual-reassembly in
encapsulation slip
dialer in-band
dialer idle-timeout 300
dialer string optus
dialer string cellinternet
dialer-group 1
async mode interactive
interface Vlan1
ip address
ip nat inside
ip virtual-reassembly in
ip forward-protocol nd
ip http server
ip http access-class 23
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat inside source list 23 interface Cellular0 overload
ip route Cellular0
access-list 10 permit
access-list 23 permit
dialer-list 1 protocol ip permit
line con 0
no modem enable
line aux 0
line 3
exec-timeout 0 0
script dialer cellinternet
modem InOut
no exec
transport input all
rxspeed 21600000
txspeed 5760000
line vty 0 4
access-class 23 in
privilege level 15
transport input ssh