4000 Router Series MPLS Command Reference

Parameters

attribute-value: Specifies the link attribute value in the range of 0x00000000 to 0xFFFFFFFF. A link

attribute value is a 32-bit binary number. Each bit represents an attribute with a value of 0 or 1.

Usage guidelines

The TE information of a link advertised by the IGP includes the link attribute configured by this command.

After receiving the link TE information, the ingress node of an MPLS TE tunnel determines whether the link

can be used to establish the MPLS TE tunnel according to the configured tunnel affinity attribute, the

affinity mask, and the link attribute. A link is available for a tunnel if the following requirements are met:

• The link attribute bits corresponding to the affinity attribute's 1 bits whose mask bits are 1 must have

at least one bit set to 1.

• The link attribute bits corresponding to the affinity attribute's 0 bits whose mask bits are 1 must have

no bit set to 1.

The link attribute bits corresponding to the 0 bits in the affinity mask are not checked.

For example, if the affinity is 0xFFFFFFF0 and the mask is 0x0000FFFF, a link is available for the tunnel

when its link attribute bits meet the following requirements: the highest 16 bits each can be 0 or 1 (no

requirements), the 17

through 28

bits must have at least one bit whose value is 1, and the lowest four

bits must be 0.

Examples

# On interface Ethernet 1/1, configure the link attribute as 0x00000101.

<Sysname> system-view

[Sysname] interface ethernet 1/1

[Sysname-Ethernet1/1] mpls te link-attribute 101

Related commands

mpls te affinity-attribute

mpls te loop-detection

Use mpls te loop-detection to enable loop detection during establishment of an MPLS TE tunnel.

Use undo mpls te loop-detection to disable loop detection for the MPLS TE tunnel.

Syntax

mpls te loop-detection

undo mpls te loop-detection

Default

Loop detection is disabled for an MPLS TE tunnel.

Views

Tunnel interface view

Predefined user roles

network-admin

Usage guidelines

When loop detection is enabled on the ingress node of an MPLS TE tunnel, the route recording function

is automatically enabled for the tunnel, regardless of whether you have configured the mpls te