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show mpls label usage label-range



There are four different label spaces currently used in MPLS—namely LSI, dynamic, block, and static. Each label space has a fixed number and cannot grow beyond the fixed value. Using show mpls label usage label-range command, the administrator can monitor the available labels in each label space and the applications that are using the labels. Based on the availability of labels, the administrator can decide to stop any service and free some labels or use other service where the labels are available.

Starting in Junos OS Release 17.2, you can configure the enhanced-ip command, which is supported on platforms using Modular Port Concentrators (MPCs) equipped with Junos Trio chipsets. You can also separate the MPLS labels used for different label spaces which provides more flexibility and scalability.

When you set each member router’s network services to enhanced-ip, only MPC or Modular Interface Cards (MICs) modules and Multiservices Dense Port Concentrator (MS-DPC) modules are powered on in the chassis. Non-service DPCs do not work with enhanced IP network services.


block-label-range range-start range-end

Display the details of block label type.

dynamic-label-range range-start range-end

Display the details of dynamic label type.

label-limit label-limit value

Limit for the number of concurrent active labels.

lsi-label-range range-start range-end

Display the details of LSI label type.

static-label-range range-start range-end

Display the details of static label type.

Required Privilege Level


Output Fields

Table 1 describes the output fields for the show mpls label usage label-range command. Output fields are listed in the order in which they appear.

Table 1: show mpls label usage label-range Fields

Field Name

Field Description

Label Space

Indicates the different types of labels currently used in MPLS.


Indicates the total label space available.


Indicates the number of freely available labels and also the percentage of the label space available.


Indicates the applications that use the MPLS label spaces.

Effective Ranges

Indicates actual ranges in use, which can be different from configured ranges, if conflicting with label already allocated.

Configured Ranges

Indicates the currently configured range assigned to different label spaces on the device.


Indicates the currently used labels with label type and application type details.

Sample Output

show mpls label usage label-range

With the enhanced-ip command enabled on the supported device, you get the following output.

Release Information

Command introduced in Junos OS Release 17.2.