для 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 Examples
16
Cisco IOS Release 12.0(22)S
Configuring an MPLS Traffic Engineering Tunnel that an IGP Can Use
To configure an MPLS traffic engineering tunnel that an IGP can use, perform these steps in interface
configuration mode. This tunnel has two path setup options: a preferred explicit path and a backup
dynamic path.
configuration mode. This tunnel has two path setup options: a preferred explicit path and a backup
dynamic path.
Configuration Examples
This section provides the following configuration examples:
•
•
•
•
illustrates a sample MPLS topology. This example specifies point-to-point outgoing interfaces.
The next sections contain sample configuration commands you enter to implement MPLS traffic
engineering and the basic tunnel configuration shown in
engineering and the basic tunnel configuration shown in
Step 5
Router(config-if)# tunnel mpls
traffic-eng bandwidth
bandwidth
Configures the bandwidth for the MPLS traffic engineering tunnel.
Step 6
Router(config-if)# tunnel mpls
traffic-eng path-option
number
{dynamic | explicit {name path-name |
path-number}} [lockdown]
Configures the tunnel to use a named IP explicit path or a path
dynamically calculated from the traffic engineering topology
database. A dynamic path is used if an explicit path is currently
unavailable.
dynamically calculated from the traffic engineering topology
database. A dynamic path is used if an explicit path is currently
unavailable.
Command
Purpose
Command
Purpose
Step 1
Router(config-if)# interface tunnel1
Configures an interface type and enters interface configuration
mode.
mode.
Step 2
Router(config-if)#
tunnel mpls
traffic-eng autoroute announce
Causes the IGP to use the tunnel in its enhanced SPF calculation.