Technical data

6-8 Dial Solutions Quick Configuration Guide
Configuring the Dialing Access Server
Step 5 Configure the asynchronous interface as dedicated to PPP mode, which means that the
access server automatically uses a PPP session for this interface. The async mode
dedicated command enables the configured session type to start automatically when the
DDR link comes up.
Woodstock(config-if)# async mode dedicated
Step 6 Configure DDR support on the asynchronous interface using the dialer in-band
command.
Woodstock(config-if)# dialer in-band
Step 7 Set the number of seconds the connection remains open if no interesting traffic is being
routed across this link. The timer is reset each time an interesting packet is forwarded
across the DDR connection. You need to set the idle-timeout to the same value on both
access servers. In this example, the line is closed after 5 consecutive minutes without
interesting traffic.
Woodstock(config-if)# dialer idle-timeout 300
Step 8 Issue the dialer map command. In addition to authentication on the dialing access server,
this command also provides the dial string and the modem script that are used to dial the
number. The command essentially maps a name, modem script, and phone number to a
destination IP address.
Woodstock(config-if)# dialer map ip 172.16.10.1 name Snoopy modem-script dialnum
broadcast 14085554321
The address 172.16.10.1 is the IP address of the answering access server’s asynchronous
interface. Because IP unnumbered interfaces are being used, this address is the same as
the central IP address assigned to the Ethernet interface 0.
The name Snoopy is the host name of the remote access server. The name is case sensitive
and must be defined as a username.
The modem-script dialnum specifies that this chat-script (dialnum) be sent when the
access server initiates a call.
The keyword broadcast enables broadcast packets to be forwarded to this address (such
as RIP or IGRP updates for IP and RIP and SAP updates for IPX).
The number 14085554321 is the answering access server’s telephone number. This is the
number to dial to reach the remote access server.
Step 9 Associate this asynchronous interface with the dialer list 1 definition by using the
dialer-group 1 command. The interface now considers anything defined in dialer list 1
as interesting traffic.
Woodstock(config-if)# dialer-group 1