Cisco Systems 8540 appendix Configuring the ATM Uplink Interface Catalyst, Configuration Overview

Chapter 4 Configuring Interfaces

Configuring the ATM Uplink Interface (Catalyst 8540)

Note The ATM uplink interface module does not work in a Catalyst 8540 MSR when the ATM router module is present.

Configuring the ATM Uplink Interface (Catalyst 8540)

This section describes the default configuration of the ATM uplink interface, initial configurations you should perform for a newly installed interface, and optional configurations you can do to customize the interfaces to the requirements of your network.

Note The ATM uplink interface module consists of one OC-12c or OC-3c port and one enhanced Gigabit Ethernet port. For instructions on configuring the enhanced Gigabit Ethernet interface, see the “About the Enhanced Gigabit Ethernet Interfaces (Catalyst 8540)” section on page 4-5.

Configuration Overview

The following steps provide on overview of configuring an ATM uplink from the switch router to the ATM network:

Step 1 Configure the ATM uplink interface:

a.Enable the ATM interface.

b.Customize the configuration by configuring PVCs and SVCs.

You must configure at least one PVC or SVC. The VC options you configure must match in three places: on the switch router, on the ATM switch, and at the remote end of the PVC or SVC connection.

Step 2 Configure the ATM switch to which the ATM uplink connects.

Default Configuration

On power up, the ATM uplink interface is shut down. When you enter the no shutdown command, the interface is enabled with the default configuration values shown in Table 4-4.

Table 4-4 ATM Uplink Interface Default Configuration Values

		Parameter	Configuration Command	Default Value
		Maximum transmission unit	[no] mtu bytes	4470 bytes
		(MTU)
		Loopback	[no] loopback	No loopback
		SONET framing	[no] atm sonet stm-1 for OC-3	no stm-1
			[no] atm sonet stm-4 for OC-12	no stm-4
	Layer 3 Switching Software Feature and Configuration Guide
4-28			78-6235-04, Cisco IOS Release 12.0(10)W5(18)