Specifications

tunnel mpls traffic-eng path-option
MP-876
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
tunnel mpls traffic-eng path-option
To configure a path option for a Multiprotocol Label Switching (MPLS) traffic engineering (TE) tunnel,
use the tunnel mpls traffic-eng path-option command in interface configuration mode. To disable this
function, use the no form of this command.
tunnel mpls traffic-eng path-option nu
mber { dynamic | explicit {{name path-name | identifier
path-number} [verbatim]}} [attributes name] [bandwidth {bandwidth | sub-pool } ]
[lockdown]
no tunnel mpls traffic-eng path-option { nu
mber | protect number }
Syntax Description
Command Default No default behavior or values.
Command Modes Interface configuration
Command History
Usage Guidelines You can configure multiple path options for a single tunnel. For example, there can be several explicit
pa
th options and a dynamic option for one tunnel. Path setup preference is for lower (not higher)
numbers, so option 1 is preferred.
If you specify the dy
namic keyword, the software checks both the physical bandwidth of the interface
and the available TE bandwidth to be sure that the requested amount of bandwidth does not exceed the
physical bandwidth of any link. To oversubscribe links, you must specify the explicit keyword. If you
use the explicit keyword, the software only checks how much bandwidth is available on the link for TE;
the amount of bandwidth you configure is not limited to how much physical bandwidth is available on
the link.
Examples The following example shows how to configure the tunnel to use a named IP explicit path:
Router(config-if)# tunnel mpls traffic-eng path-option 1 explicit name test
number Preference for this path option. When you configure multiple path options,
lower numbered options are preferred. Valid values are from 1 to 1000.
dynamic Path of the label switched path (LSP) is dynamically calculated.
explicit Path of the LSP is an IP explicit path.
name pa
th-name Path name of the IP explicit path that the tunnel uses with this option.
identifier pa
th-number Path number of the IP explicit path that the tunnel uses with this option. The
range is from 1 to 65535.
lockdown (Optional) The LSP cannot be reoptimized.
Release Modification
12.2(4)T This command was introduced.
12.4(20)T This command was integrated into Cisco IOS Release 12.4(20)T.