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Hierarchy Level


Enable compression of SIDs for the specified locator and configure parameters for the micro SID locator. All micro-SIDs derived from this locator take the default micro-SID-length of 16. If you need to include more than six SRv6 SIDs, micro-SIDs help with compressing multiple IPv6 addresses. Compression of the SID list to a single destination address (the micro-SID) reduces the bandwidth overhead.


Currently we do not support flexible algorithm with micro SIDs extension. If you configure micro-SID, you cannot configure flexible algorithm.



Indicates that SIDs derived from this locator are anycast SIDs. SRv6 advertises the locator as anycast locator in IGP advertisements.


Specify a block name for this micro-SID locator.


Specify micro-SID locator behavior such as Penultimate Segment Pop (PSP), Ultimate Segment Pop (USP) or Ultimate Segment Decapsulation (USD). You can configure any combination of PSP, USP, USD flavors. For example, you can specify just PSP, or both (PSP and USP), or all three (PSP, USP, USD). The flavor is applicable for all SIDs derived from this locator.

  • none—Use this option if you do not want to confugure a flavor

  • psp—Penultimate segment pop of the SRH

  • usd—Ultimate segment decapsulation

  • usp—Ultimate segment pop of the SRH

  • Default: If you do not specify a flavor, IS-IS uses PSP and USD by default.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Evolved Release 23.2R1 and Junos OS 23.4R1.