MPLS Label Range Configuration

You use the MPLS label manager to manage different label types, such as LSI, dynamic, block, and static.

Historically, Juniper devices supported the label-space CLI statement to allocate different label spaces to different label types. To provide additional options, such as multiple ranges for each type of label, this feature enhances the MPLS label manager functionality by introducing the label-range CLI statement, which is independent of the label-space configuration. For compatibility with older software releases, label-space is retained, but its usage is not recommended.

The label-range configuration, in conjunction with enhanced-ip mode, introduces the following enhancements:

• Enables you to define the system-wide global label pool to be used by segment routing global block (SRGB) through the IS-IS routing protocol.
• Increases the vrf-table-label space to at least 16,000, if the platform can support the scale.
• Enables you to specify the label value to be used by the static VRF table label.
• Enables you to specify the label value range to be used by the supported label application types.
• Enables you to change the SRGB and label type ranges dynamically.