- Enterasys Security Router User's Guide

Backup Configuration
XSR User’s Guide 10-37
Backup Configuration
Backup Using ISDN
This example configures ISDN NIM cards (either BRI or T1/E1 configured for PRI) to be used for
backing-up other interfaces, as shown in Figure 10-17.
Figure 10-17 Backup Topology Using ISDN
Node A (Backed-up Node) Configuration
The following commands set internal clocking and configure two channel groups with three total
timeslots on T1 sub-interface 1/2:0:
XSR(config)#controller t1 1/2/0
XSR(config-controller<T1-1/2:0>)#clock source internal
XSR(config-controller<T1-1/2:0>)#channel-group 1 timeslots 2
XSR(config-controller<T1-1/2:0>)#channel-group 0 timeslots 1
XSR(config-controller<T1-1/2:0>)#no shutdown
The following commands add a dialer pool member and set the Central Office switch type on BRI
port 1/0:
XSR(config)#interface bri 1/0
XSR(config-if<BRI-1/0>)#isdn switch-type basic-net3
XSR(config-if<BRI-1/0>)#dialer pool-member 22
XSR(config-if<BRI-1/0>)#no shutdown
The following commands add a dialer pool, set Node C’s dialer number to call, specify a clear text
password sent to the peer for PAP authentication, and map BRI interface 1/0 to Dialer interface 1.
XSR(config)#interface dialer 1
XSR(config-if<D1>)#no shutdown
XSR(config-if<D1>)#dialer pool 22
XSR(config-if<D1>)#dialer string 2500
XSR(config-if<D1>)#encapsulation ppp
XSR(config-if<D1>)#ip address 10.10.10.1 255.255.255.0
XSR(config-if<D1>)#ppp pap sent-username toronto password ab
The following commands add a dialer pool, set Node C’s dialer number to call, and map BRI
interface 1/0 to Dialer interface 2:
XSR(config)#interface dialer 2
XSR(config-if<D2>)#no shutdown
Node A
[XSR]
.
Node C
[XSR]
ISDN
IP address 10.10.10.1
IP address 20.20.20.1
phone# 2300
IP address 10.10.10.3
IP address 20.20.20.3
phone# [phone]
Primary leased
backup lines
IP address 30.30.30.1
IP address 40.40.40.1
IP address 30.30.30.3
IP address 40.40.40.3