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Chapter 8 Using WAN Manager

This chapter describes how to configure and monitor WAN Manager interfaces in the router. It includes the following topics:

Introducing the WAN Manager Interface

Displaying the WAN Manager Configuration Prompt

WAN Manager Configuration Commands

Displaying the WAN Manager Monitoring Prompt

WAN Manager Monitoring Commands

Introducing the WAN Manager Interface

The WAN Manager is the top layer of the three-layered Dial Circuit protocol stack. This layer of the protocol stack serves as an interface between the upper layers and the data link layer. It accepts commands to configure the properties described in Table 8-1.

Table 8-1 Properties of the ISDN Circuit

Property Description

Dial destination name This is the router that you call when you place an outbound call. The local router always accepts calls from this router, if the router passes PPP authentication and if inbound calls are enabled.

Inbound access list You can add up to eight additional routers to the access list that allows these routers to call into the local router.

Accept any inbound calls If this option is enabled, the local router accepts calls from any router that passes PPP authentication.

Enable/disable inbound calls Option to enable or disable all inbound calls.

Enable/disable outbound calls Option to enable or disable the outbound calls from the local router.

Idle timer This controls dial-on-demand. If this timer is nonzero, dial-on-demand is enabled.

Property	Description
Dial destination name	This is the router that you call when you place an outbound call. The local router always accepts calls from this router, if the router passes PPP authentication and if inbound calls are enabled.
Inbound access list	You can add up to eight additional routers to the access list that allows these routers to call into the local router.
Accept any inbound calls	If this option is enabled, the local router accepts calls from any router that passes PPP authentication.
Enable/disable inbound calls	Option to enable or disable all inbound calls.
Enable/disable outbound calls	Option to enable or disable the outbound calls from the local router.
Idle timer	This controls dial-on-demand. If this timer is nonzero, dial-on-demand is enabled.

Displaying the WAN Manager
Configuration Prompt

To display the WAN Config> prompt

1. Enter list interfaces at the Config> prompt to display a list of interfaces.

2. Enter network followed by the number of the interface you want to configure.

Config>network 1
Circuit Config>

3. Enter wan.

Circuit Config> wan
WAN Manager Configuration
WAN Config>

WAN Manager Configuration Commands

Table 8-2 summarizes and defines the WAN Manager configuration commands. Enter the commands at the WAN Config> prompt. Enter ? after you type a command to display the available options for each command for your router.

Table 8-2 WAN Manager Configuration Commands
Command	Function
? (Help)	Displays available commands or lists the options for specific commands.
Disable	Disables the dial circuit from accepting inbound calls or making outbound calls.
Enable	Enables the dial circuit to accept inbound calls and make outbound calls.
List	Lists the dial circuit configuration parameters.
Set	Sets the access list, the name of the destination router, and the idle timeout.
Exit	Returns to the Circuit `Config>` prompt.

Help (?)

Lists available commands. You can also enter ? after a command to list its options.

Syntax: ?

Example: enable ?

ANY-INBOUND
INBOUND
OUTBOUND

Disable

Disables calls to and/or from the local router. Use the command options provided by this command to configure some routers to place calls and other routers to accept calls.

Syntax: disable

any-inbound
call-back
inbound
outbound

Enable

Enables calls to and/or from the local router. Use the command options provided by this command to configure some routers to place calls and other routers to accept calls.

Syntax: enable

any-inbound
inbound
outbound

any-inbound

Configures the dial circuit to accept calls from any remote destination.

Example: enable any-inbound

Note: Inbound calls do not reach the WAN Manager unless they pass caller ID or PPP authentication (if any). Therefore, if PPP authentication is enabled, this option directs the WAN Manager to accept calls only from all authenticated callers. (See Chapter 9 for information on PPP authentication.)

inbound

Configures the dial circuit to accept inbound calls. This is the default behavior.

Example: enable inbound

outbound

Configures the dial circuit to make outbound calls. Outbound calls must be enabled when dial-on-demand is enabled.

This is the default behavior of the GlobeTrotter 70 and 72. By default, the router places an outbound call via its ISDN interface either immediately upon restarting (if dial-on-demand is off) or when packet data is transmitted to the ISDN device.

Example: enable outbound

List

Lists the parameters of the dial circuit.

Syntax: list

Example: list

Destination name: boise
Outbound calls allowed
Inbound calls allowed
Idle timer 60 sec
Access List: boise (destination), helena, duluth

Set

Sets the access list, the name of the destination router, and the idle timeout.

Syntax: set

access-list
destination
idle

access-list

Sets the name or names of the originating routers from which calls are accepted. This list of names is in addition to the router named in the outbound call destination.

Accepts from zero to eight names of remote routers. To change this list, you must re-enter the entire list.

Note: A PAP password, CHAP secret, or ISDN number must be provided for the name before using the interface. If none of these properties is defined for the name, then the GlobeTrotter 70 or 72 cannot recognize the identity of the calling router. (See Chapter 9 for PAP and CHAP and Chapter 12 for ISDN.) You can configure an access list by following the syntax in either of the following examples.

Example 1: set access-list

Enter 1st name: []? boston
Enter 2nd name: []? new york
Enter 3rd name: []? philadelphia

Example 2:	 set access-list boise helena 

Enter 3rd name: []?

destination

Sets the name of the destination router to call when an outbound call is placed. Inbound calls from this remote router are also accepted.

The ISDN telephone number dialed is defined within the ISDN module.

Note: More generally, the MAC layer provides a phone book that maps names to addresses that are appropriate for the specific MAC media. In the case of the GlobeTrotter 70 and 72, this is an ISDN number. The MAC layer maps the name to the appropriate number. Example: set destination

Assign destination address name [boise]?

idle

Configures the dial circuit to automatically disconnect after the specified time (in seconds) has elapsed with no data traffic passing over the dial circuit. If the value is set to 0, the circuit is not automatically disconnected and remains connected regardless of the amount of data traffic over the dial circuit. It is configured as a dial-on-demand or dedicated circuit.

Note: If the idle timer is nonzero, then the dial circuit is not brought up when the router restarts. It remains disconnected until a protocol forwarder (such as IP) sends a packet. This prevents gratuitous calls upon router restart. Example: set idle

Idle timer (seconds, 0 means always active) [30]? 60

By default, the idle time is set to 120 seconds.

Exit

Returns to the Circuit Config> prompt.

Syntax: exit

Example: exit

Displaying the WAN Manager
Monitoring Prompt

Monitoring the dial circuits is executed via the network command entered at the talk 5 monitoring prompt (+). The topmost menu under the network command lists those modules that comprise the Dial Circuit protocol stack. These modules are the WAN Manager, PPP, and ISDN.

To display the Circuit> prompt, enter network followed by the number of the interface you want to configure.

+network 1
Circuit>

WAN Manager Monitoring Commands

Table 8-1 defines the WAN Manager monitoring commands. Enter the commands at the Circuit> prompt. Enter ? after you type a command to display the available options for each command.