Ppp Over Isdn Internet Access - Allied Telesis AR Router Configuration

2.5. PPP over ISDN Internet Access

Site A
CentreCO M AR 300
A cc e s s R o ut e r
192.168.10.0
Private
Note: Be aware that with many Internet Providers it may be more suitable to turn LQR (link quality reporting) off on PPP
links, and instead use LCP Echo Request and Echo Reply messages to determine link quality (echo=on). Simply add
'lqr=off echo=on' to the PPP creation command.
Router A
#
# System Configuration
set sys territory=<countrycode>
#
# ISDN Configuration
add isdn call=internet num=12345 prec=out
#
# PPP Configuration
nd
# Note: 2 B channel on demand
create ppp=0 over=isdn-internet idle=60 bap=off ipreq=on user=<username> pass=<password>
add ppp=0 over=isdn-internet type=demand
#
# IP Configuration
enable ip
enable ip rem
add ip int=eth0 ip=192.168.10.1
add ip int=ppp0 ip=0.0.0.0
add ip route=0.0.0.0 next=0.0.0.0 int=ppp0
enable ip nat
enable ip nat log=all
add ip nat ip=192.168.10.0 mask=255.255.255.0 gblint=ppp0
Helpful Scripts
Revision 5.8.7; 5 April 2001
Dynamic IP
LA N W AN SY S T EM
NAT Public
Router C
Same as router B with the following exceptions
1) Replace all occurances of "siteb" with
"sitec"
2) Change the ip address of ppp0 and eth0
appropriately
ISDN
Helpful Scripts
Internet
Page
11