MPLS Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 25.1.x, 25.2.x, 25.3.x

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Updated:: September 16, 2025

New and Changed MPLS Features

This table summarizes the new and changed feature information for the MPLS Configuration Guide for Cisco NCS 5500 Series Routers, and tells you where they are documented.

New and Changed MPLS Feature Information

Table 1. New and Changed Features
Feature	Description	Changed in Release	Where Documented
Granular TTL propagation and DSCP preservation controls on MPLS PHP nodes	This feature was introduced.	Release 25.3.1	Granular TTL propagation and DSCP preservation controls on MPLS PHP nodes
Autoroute announce with IPv6 destination address for ISIS	This feature was introduced.	Release 25.2.1	Autoroute Announce with ISIS

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