Enterasys Networks X-PeditionTM Incoming Call Mapping Example, Node a Calling Node Configuration

Answering Incoming ISDN Calls

Incoming Call Mapping Example

This example, as shown in Figure 10-10, configures a node capable of handling multiple call setup requests coming from different remote peers and maps each incoming call to the correct IP interface (Dialer interface).

Figure 10-10 Incoming Call Mapping Topology

IP address 10.10.10.1		IP address 10.10.10.2
	phone# 2300	IP address 20.20.20.2
Node A	name toronto	phone# 2400
[XSR]
	ISDN	Node B
		[XSR]
	Connection
	requests
Node D
[XSR]	IP address 20.20.20.4
	phone# 2600
	name boston

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 25

XSR(config-if<BRI-1/0>)#no shutdown

The following commands define a dialer group, add a dialer pool, set a 25-second idle timeout, and map BRI interface 1/0 to Dialer interface 1. The dialer map command directs Node A to call Node B, specifying Node B’s IP address and phone number as well as enables spoofing on the network. Optionally, you can specify a clear text password be sent to the peer for PAP authentication.

XSR(config)#interface dialer 1

XSR(config-if<D1>)#no shutdown

XSR(config-if<D1>)dialer pool 25

XSR(config-if<D1>)encapsulation ppp

!XSR(config-if<D1>)#ppp pap sent-username toronto password q XSR(config-if<D1>)dialer idle-timeout 20 XSR(config-if<D1>)dialer-group 3 XSR(config-if<D1>)dialer map ip 10.10.10.2 2400 XSR(config-if<D1>)ip address 10.10.10.1 255.255.255.0

The following command defines interesting packets for the dial out trigger by configuring ACL 101 to pass all Type 8 source and destination ICMP packets up to 20 idle seconds:

XSR(config)#access-list 101 permit icmp any any 8

The following command maps ACL 101 to dialer group 3:

XSR(config)#dialer-list 3 protocol ip list 101

XSR User’s Guide 10-21