Enterasys Networks Security Router X-PeditionTM - Manual (Page 258)

Switched PPP Multilink Configuration
10-36 Configuring Dialer Services
Node A (Calling Node) Configuration
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 23
XSR(config-if<BRI-1/0>)#no shutdown
The following commands define a dialer group, add a dialer pool, enable MLPPP, set a load
threshold of 3 links, and map BRI interface 1/0 to Dialer interface 1. The
load-threshold
command enables BoD by making the
XSR maintain three links over the switched line. The
dialer map command directs Node A to call
Node C, specifying Node C’s IP address and phone number as well as enables spoofing on the
network.
XSR(config)#interface dialer 1
XSR(config-if<D1>)#no shutdown
XSR(config-if<D1>)#dialer pool 23
XSR(config-if<D1>)#encapsulation ppp
XSR(config-if<D1>)#ip address 10.10.10.1 255.255.255.0
XSR(config-if<D1>)#dialer map ip 10.10.10.3 2500
XSR(config-if<D1>)#ppp multilink
XSR(config-if<D1>)#dialer-group 7
XSR(config-if<D1>)#multilink load-threshold 3
XSR(config-if<D1>)#dialer idle-timeout 20
The following command defines interesting packets for the dial out trigger by configuring ACL 106
to pass all Type 8 source and destination ICMP packets up to 20 idle seconds:
XSR(config)#access-list 106 permit icmp any any 8
The following command maps ACL 106 to dialer group 7:
XSR(config)#dialer-list 7 protocol ip list 106
Node C (Called Node) Configuration
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 2
XSR(config-if<BRI-1/0>)#no shutdown
The following commands add a dialer pool, enable MLPPP, and map BRI interface 1/0 to Dialer
interface 1. The
dialer called command maps incoming Node A calls to its 2500 number:
XSR(config)#interface dialer 1
XSR(config-if<D1>)#no shutdown
XSR(config-if<D1>)#dialer pool 2
XSR(config-if<D1>)#encapsulation ppp
XSR(config-if<D1>)#dialer called 2500
XSR(config-if<D1>)#ip address 10.10.10.3 255.255.255.0
XSR(config-if<D1>)#ppp multilink