MPLS Configuration Guide for Cisco 8000 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 8000 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
Improved scale for MPLS over UDP tunnels	This feature was modified.	Release 25.3.1	Improved scale for MPLS over UDP tunnels
Autoroute announce with IPv6 destination address for ISIS	This feature was introduced.	Release 25.2.1	Autoroute Announce with ISIS
RSVP-TE Transport Solution with Flex LSP Headend	This feature was modified	Release 25.1.1	RSVP-TE Transport Solution with Flex LSP Headend
RSVP-TE transport solution using PCE	This feature was introduced	Release 25.1.1	RSVP-TE transport solution using PCE

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