9-26
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter9 Configuring Resource Management
Configuring Physical and Logical Interface Parameters
Configuring Physical and Logical Interface Parameters
The following sections describe interface configuration resource management tasks for both physical
and logical interface types:
Configuring the Interface Link Distance, page 9-26
Configuring the Limits of Best-Effort Connections, page 9-27
Configuring the Interface Maximum of Individual Traffic Parameters, page 9-29
Configuring the ATM Default CDVT and MBS, page 9-31
Configuring Interface Service Category Support, page 9-33
Configuring SVC Policing by Service Category, page 9-35

Configuring the Interface Link Distance

Specifying the physical link distance for the next ATM hop in the outbound direction allows you t o
increase the propagation delay. Propagation delay is used in determining the connection admission
control (CAC) maximum cell transfer delay (CTD) provided on the output by a switch interface, which
can affect the switched virtual channel (SVC) connection requests accepted.
Note For a detailed description of the CAC algorithm pseudo-code on the ATM switch router, refer to the
Guide to ATM Technology.
To configure the interface link distance, perform the following tasks, beginning in global configuration
mode:
Note The atm link-distance command affects subsequent connections but not connections that are already
established.
Example
The following example shows how to configure the outbound link distance to 150 kilometers:
Switch(config-if)# atm link-distance 150

Displaying the Interface Link Distance Configuration

To display the interface link distance configuration, use the following EXEC command:
Command Purpose
Step1 Switch(config)# interface atm
card/subcard/port[.vpt#]
Switch(config-if)#
Selects the interface to be configured.
Step2 Switch(config-if)# atm link-distance kilometers Configures the interface link distance for the
interface.