Configuring and Monitoring WAN Interfaces

To configure and monitor WAN interfaces, use the Circuit Config <NET-#> and the Circuit <NET-#> prompts. These prompts include the number of the interface that you are currently configuring or monitoring.

The circuit prompts take you to the configuration or monitoring process for the data-link protocol or services running on the interface. For example, you can go to the PPP prompt or one of the Frame Relay prompts.

In addition, you can set certain circuit properties at the circuit configuration prompt. Table 1 shows these properties.

Table 1 Circuit Properties

To . . . Use this command . . .

Prevent this interface from accepting incoming calls.
disable inbound

Prevent this interface from placing calls.
disable outbound

Prevent the router from continuing to make calls on dial-up interfaces after a connection attempt fails.
disable redial

Let this interface accept calls from any router that passes PPP authentication. (This is disabled by default.)
enable any-inbound

Allow this interface to accept incoming calls. (This is the default behavior.)
enable inbound

Allow this interface to place calls. (This is the default.)
enable outbound

Cause the router to continue to make calls on dial-up interfaces after a connection attempt fails.
enable redial

Create a list of up to eight remote routers from which this interface accepts calls.
set access-list

Assign a chat script to use with this interface.
set chat-script

Assign the remote router to call when this interface places an outbound call. If this router passes PPP authentication and if inbound calls are enabled, the local router always accepts calls from this router.
set destination

Sets the interface to dial-on-demand or dedicated. By default, interfaces are set to dial-on-demand.
set idle

To . . .	Use this command . . .
Prevent this interface from accepting incoming calls.	disable inbound
Prevent this interface from placing calls.	disable outbound
Prevent the router from continuing to make calls on dial-up interfaces after a connection attempt fails.	disable redial
Let this interface accept calls from any router that passes PPP authentication. (This is disabled by default.)	enable any-inbound
Allow this interface to accept incoming calls. (This is the default behavior.)	enable inbound
Allow this interface to place calls. (This is the default.)	enable outbound
Cause the router to continue to make calls on dial-up interfaces after a connection attempt fails.	enable redial
Create a list of up to eight remote routers from which this interface accepts calls.	set access-list
Assign a chat script to use with this interface.	set chat-script
Assign the remote router to call when this interface places an outbound call. If this router passes PPP authentication and if inbound calls are enabled, the local router always accepts calls from this router.	set destination
Sets the interface to dial-on-demand or dedicated. By default, interfaces are set to dial-on-demand.	set idle

Displaying the Circuit Prompts

To display the Circuit Config <NET-#> 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 Configuration

Circuit Config <NET-1>

To display the Circuit <NET-#> prompt

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

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

Monitor>network 1
Circuit <NET-1>

Circuit Commands

Table 2 summarizes the Circuit commands.

Not all parameters apply to all devices or to all interfaces. Press Space twice after you type a command to display the available parameters for each command. Enter help for information about using the command line interface.

[C] means the command is available at the Circuit Config <NET-#> prompt.

[M] means the command is available at the Circuit <NET-#> prompt.

Table 2 Circuit Commands
Command	Function
BRI [C] [M]	Displays the ISDN BRI configuration or monitoring prompt.
BRS [C] [M]	Displays the Bandwidth Reservation System configuration or monitoring prompt.
DDS [C] [M]	Displays the DDS configuration or monitoring prompt.
DIAL [C] [M]	Displays the Serial Interface Dialer (DIAL) configuration or monitoring prompt.
Disable [C]	Disables the interface from accepting inbound calls and making outbound calls, and disables redialing on dial-up interfaces.
Enable [C]	Allows the interface to accept inbound calls and make outbound calls, and enables redialing on dial-up interfaces.
Exit [C] [M]	Returns to the previous prompt.
FRLANE [C] [M]	Displays the Frame Relay LAN Emulation configuration or monitoring prompt.
FRMGR [C] [M]	Displays the Frame Relay Manager configuration or monitoring prompt.
FRVC [M]	Displays the Frame Relay Virtual Circuit monitoring prompt.
List [C] [M]	Displays the circuit configuration.
PPP [C] [M]	Displays the PPP configuration or monitoring prompt.
Set [C]	Sets the access list, the name of the destination, the chat script to use, and the idle timeout.
SL [C]	Displays the Serial Line configuration prompt.

BRI [C] [M]

Displays the ISDN Basic Rate Interface (BRI) configuration or monitoring prompt. See Using the ISDN Interface for information on the commands available at this prompt.

Syntax: bri

Example: bri

Basic Rate ISDN user configuration

BRI Config <NET-1>

BRS [C] [M]

Displays the Bandwidth Reservation System (BRS) configuration or monitoring prompt. See Using Bandwidth Reservation and Priority Queuing for information on the commands available at this prompt.

Syntax: brs

Example: brs

Bandwidth Reservation User Configuration

BRS Config <NET-1>

DDS [C] [M]

Displays the DDS configuration or monitoring prompt. See Configuring Fractional T1/E1 Devices for information on the commands available at this prompt.

Syntax: dds

Example: dds

DDS user configuration

DDS Config <NET-1>

DIAL [C] [M]

Displays the Serial Interface Dialer configuration or monitoring prompt. This command is not available unless you first enter enable dial at the Config> prompt.

See Using the Serial Interface Dialer for information on the commands available at this prompt.

Syntax: dial

Example: dial

Serial Interface Dialer Configuration

DIAL Config <WAN>

Disable [C]

Disables calls to and/or from this interface. Use the options that this command provides to configure some interfaces to place calls and other interfaces to accept calls.

Syntax: disable

any-inbound
inbound
outbound
redial

Enable [C]

Enables calls to and/or from this interface. Use the options that this command provides to configure some interfaces to place calls and other interfaces to accept calls.

Syntax: enable

any-inbound
inbound
outbound
redial

any-inbound

Configures the interface to accept calls from any remote destination.

Example: enable any-inbound

Note: If you have enabled PPP authentication, this option directs the interface to accept calls only from all authenticated callers. (See Using PPP Interfaces for information on PPP authentication.)

inbound

Configures the interface to accept inbound calls. This is the default behavior.

Example: enable inbound

outbound

Configures the interface to make outbound calls. You must enable outbound calls when dial-on-demand is enabled.

This is the default behavior of the interface. By default, the interface places an outbound call either immediately upon restarting (if dial-on-demand is off) or when the interface receives data to send.

Example: enable outbound

redial

Lets you control whether or not the router continues to make calls after unsuccessful connection attempts.

Redial takes affect only on dial-up interfaces, which have the idle timer set to a non-zero value. On dial-up interfaces, the router attempts a connection only when traffic is present. If you have redial enabled and the connection attempt fails, the router marks the interface as Testing and continues to try to make the connection.

The default setting for redial is enabled.

Example: enable redial

Exit [C] [M]

Returns to the previous prompt.

Syntax: exit

Example: exit

Config>

FRLANE [C] [M]

Displays the Frame Relay LAN Emulation configuration or monitoring prompt. This command is not available unless you first enter enable lan-emulation at the Config> prompt.

See Using Frame Relay for information on the commands available at this prompt.

Syntax: frlane

Example: frlane

Frame Relay LAN Emulation User Configuration

FRLANE Config <NET-1>

FRMGR [C] [M]

Displays the Frame Relay Manager configuration or monitoring prompt.

See Using Frame Relay for information on the commands available at this prompt.

Syntax: frmgr

Example: frmgr

Frame Relay Manager Configuration

FRMGR Config <WAN>

FRVC [M]

Displays the Frame Relay Virtual Circuit (FRVC) monitoring prompt. There is no configuration prompt for FRVC.

See FRVC Commands for information on the commands available at this prompt.

Syntax: frvc

Example: frvc

Frame Relay Virtual Circuit Console

FRVC <NET-3>

List [C] [M]

Lists the configuration of the interface. The information displayed varies depending on the type of interface. For example, a DIAL interface or an IP Tunnel interface. The following example shows a DIAL interface.

Syntax: list

Example: list

Destination Name: boise
Chat Script Name: boisescript
Outbound calls:   Allowed
Inbound calls:    Allowed
Idle Time:        120 seconds
Redial:           Enabled
Access List:      boise (destination), helena, duluth

PPP [C] [M]

Displays the PPP configuration or monitoring prompt. See Using PPP Interfaces for information on the commands available at this prompt.

Syntax: ppp

Example: ppp

Point-to-Point user configuration

PPP Config <NET-1>

Set [C]

Sets the access list, the name of the destination router, the chat script to use, if applicable, and the idle timeout.

Syntax: set

access-list
chat-script
destination
idle

access-list

Sets the name or names of originating routers from which this interface accepts calls. This list of names is in addition to the router named with the set destination command.

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

For DIAL interfaces, address names must match addresses you added using the add address command at the DIAL Config <WAN> prompt.
For ISDN interfaces, address names must match addresses you added using the add address command at the BRI Config <NET-1> prompt.

If you are using PAP or CHAP, you must provide a PAP password or CHAP secret for the remote router. (See PAP and CHAP.)

Configure an access list by following the syntax in either of the following examples.

Example: set access-list

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

Example: set access-list boise helena

Enter 3rd name: []?

chat-script

Assigns a chat script to this interface. You can only use chat scripts over asynchronous lines. Enter the name of a chat script that you created using add chat-script at the DIAL Config <WAN> prompt. See Creating Chat Scripts for steps to configure a chat script.

To turn off use of a chat script that you set using this command, enter set chat-script off.

Example: set chat-script

Assign chat script name []?

destination

Sets the name of the destination to call when the interface places an outbound call. The interface also accepts inbound calls from this remote router.

For DIAL interfaces, this address name must match an address you added using add address at the DIAL Config <WAN> prompt.
For ISDN interfaces, this address name must match an address you added using add address at the BRI Config <NET-1> prompt.

Example: set destination

Assign destination address name []? boise

idle

Sets up the interface to either dial on demand or to always remain connected (leased line). By default, interfaces are dial-on-demand.

Setting the idle timer to 0 (zero) configures the interface as a dedicated circuit, and the interface remains connected regardless of the amount of traffic over the interface.

Setting the idle timer to nonzero configures the interface as a dial-on-demand circuit, and the router does not bring up the interface when the router restarts. The interface remains disconnected until it receives traffic. The interface automatically disconnects after the specified time (in seconds) has elapsed with no data traffic passing over the interface.

Example: set idle

Idle timer (seconds, 0 means always active) [120]? 60

SL [C]

Displays the Serial Line configuration prompt. The Serial Line configuration lets you set a serial device to asynchronous or synchronous if the device supports both line disciplines. It also lets you set HDLC or asynchronous parameters for serial devices.

See Configuring Serial Devices for information on the commands available at this prompt.

Syntax: sl

Example: sl

Serial Line Configuration

Serial Config <WAN>

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Configuring and Monitoring WAN Interfaces

Displaying the Circuit Prompts

Circuit Commands

Configuring and Monitoring WAN Interfaces

Displaying the Circuit Prompts

Circuit Commands

Table 2 Circuit Commands

BRS [C] [M]

DDS [C] [M]

DIAL [C] [M]

Disable [C]

any-inbound

any-inbound

inbound

FRLANE [C] [M]

FRMGR [C] [M]

FRVC [M]

List [C] [M]

PPP [C] [M]

Set [C]

access-list

chat-script

idle

SL [C]