Cisco Cisco IOS Software Release 12.0(22)S

( D R A F T L A B E L ) A L P H A D R A F T - C I S C O C O N F I D E N T I A L

MPLS Traffic Engineering and Enhancements

Configuration Tasks

Cisco IOS Release 12.0(22)S

Configuring a Device to Support Tunnels

To configure a device to support tunnels, perform the following steps in configuration mode.

Configuring an Interface to Support RSVP-Based Tunnel Signaling and IGP
Flooding

To configure an interface to support RSVP-based tunnel signaling and IGP flooding, perform these steps
in interface configuration mode:

Note

You must enable the tunnel feature on interfaces that you want to support MPLS traffic engineering.

Configuring IS-IS for MPLS Traffic Engineering

To configure IS-IS for MPLS traffic engineering, perform the steps described below. For a description
of the IS-IS commands (excluding the IS-IS traffic engineering commands), see the

Cisco IOS IP

Command Reference,

Volume 2 of 3: Routing Protocols, Release 12.2.

Command

Purpose

Step 1

Router(config)# ip cef

Enables standard CEF operation.

For information about CEF configuration and the
command syntax, see the Cisco IOS Switching
Services Configuration Guide and the Cisco IOS
Switching Services Command Reference.

Step 2

Router(config)# mpls traffic-eng tunnels

Enables the MPLS traffic engineering tunnel feature
on a device.

Command

Purpose

Step 1

Router(config-if)# mpls traffic-eng tunnels

Enables MPLS traffic engineering tunnels on an
interface.

Step 2

Router(config-if)# ip rsvp bandwidth bandwidth

Enables RSVP for IP on an interface and specifies
the amount of bandwidth that will be reserved.

For a description of the ip rsvp command syntax,
see the Quality of Service Solutions Command
Reference.

Command

Purpose

Step 1

Router(config)# router isis

Enables IS-IS routing and specifies an IS-IS process
for IP. This command places you in router
configuration mode.

Step 2

Router(config-router)# mpls traffic-eng level-1

Turns on MPLS traffic engineering for IS-IS level 1.