Cisco ASR 9000 Series Aggregation Services Router MPLS Configuration Guide, Release 5.1.x
New and Changed Feature Information in Cisco IOS XR Release 5.1.x
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New and Changed Feature Information in Cisco IOS XR Release 5.1.x

New and Changed Feature Information in Cisco IOS XR Release 5.1.x

This table summarizes the new and changed feature information for the Cisco ASR 9000 Series Aggregation Services Router MPLS Configuration Guide, and tells you where they are documented.

For a complete list of new and changed features in Cisco IOS XR Software, Release 5.1.x, see the New and Changed Features in Cisco IOS XR Software, Release 5.1.x for Cisco ASR 9000 Series Aggregation Services Router document.

New and Changed Feature Information in Cisco IOS XR Release 5.1.x

Table 1 New and Changed Features in Cisco IOS XR Software
Feature Description Introduced/Changed in Release Where Documented

P2MP-TE Auto-tunnels

This feature was introduced.

Release 5.1

Implementing MPLS Traffic Engineering chapter:

P2MP-TE Auto-tunnels

Refer MPLS Traffic Engineering Commands chapter in Cisco ASR 9000 Series Aggregation Services Router MPLS Command Reference for information on the commands used for configuring P2MP-TE Auto-tunnels.

MPLS over IRB

This feature was introduced.

Release 5.1

Implementing MPLS Label Distribution Protocol chapter:

MPLS over IRB

Refer MPLS Label Distribution Protocol Commands chapter in Cisco ASR 9000 Series Aggregation Services Router MPLS Command Reference for information on the commands used for configuring MPLS over IRB

Set DF Bit

This feature was introduced.

Release 5.1

Implementing MPLS Traffic Engineering chapter:

Set DF Bit

Refer MPLS Traffic Engineering Commands chapter in Cisco ASR 9000 Series Aggregation Services Router MPLS Command Reference for information on the commands used for configuring Set DF Bit.

Stateful Path Computation Element

This feature was introduced.

Release 5.1.1

Implementing MPLS Traffic Engineering chapter:

Stateful Path Computation Element

MPLS TE Extended Admin Groups

This feature was introduced.

Release 5.1.1

Implementing MPLS Traffic Engineering chapter:

MPLS TE Extended Admin Groups

VRF Redirection to MPLS TE Tunnels

This feature was introduced.

Release 5.1.1

Implementing MPLS Traffic Engineering chapter:

VRF Redirection to MPLS TE Tunnels

MPLS TE IPv6 Autoroute

This feature was introduced.

Release 5.1.1

Implementing MPLS Traffic Engineering chapter:

MPLS TE IPv6 Autoroute

PWHE over MPLS TE Tunnels

This feature was introduced.

Release 5.1.1

Implementing MPLS Traffic Engineering chapter:

PWHE over MPLS TE Tunnels

MPLS TE SRLG Scale Enhancements

This feature was introduced.

Release 5.1.1

Implementing MPLS Traffic Engineering chapter:

MPLS TE SRLG Scale Enhancements

MPLS TE Usability Enhancements

This feature was introduced.

Release 5.1.1

Implementing MPLS Traffic Engineering chapter:

MPLS TE Usability Enhancements

MPLS TE Path Cost Limit

This feature was introduced.

Release 5.1.2

Implementing MPLS Traffic Engineering chapter:

MPLS TE Path Cost Limit

Configuring Path-selection Cost Limit

Configure MPLS TE Path-selection Cost Limit: Example

Soft-preemption over FRR Backup Tunnels

This feature was introduced.

Release 5.1.2

Implementing MPLS Traffic Engineering chapter:

Soft-preemption over FRR Backup Tunnels

Enabling Soft-preemption over FRR Backup Tunnels

MPLS TE Auto-tunnel Primary One-hop

This feature was introduced.

Release 5.1.2

Implementing MPLS Traffic Engineering chapter:

MPLS TE Auto-tunnel Mesh One-hop

Enabling Auto-onehop Tunnels to Next-hop Neighbors

Inter-area Traffic Engineering with Dynamic ABR Discovery

This feature was introduced.

Release 5.1.2

Implementing MPLS Traffic Engineering chapter:

Inter-area Traffic Engineering with Dynamic ABR Discovery

GMPLS RSVP VRF Signaling

This feature was introduced.

Release 5.1.3

Implementing GMPLS UNI chapter:

GMPLS RSVP VRF Signaling