New and Changed Routing Features

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

New and Changed Routing Features

Table 1. Routing Features Added or Modified in IOS XR Release 6.5.x
Feature Description Changed in Release Where Documented

IPv4 Multicast Static Routes

IP multicast static routes (mroutes) allow you to have multicast paths diverge from the unicast paths. When using Protocol Independent Multicast (PIM), the router expects to receive packets on the same interface where it sends unicast packets back to the source. This expectation is beneficial if your multicast and unicast topologies are congruent. However, you might want unicast packets to take one path and multicast packets to take another.

Release 6.3.1 Implementing Static Routes

UCMP Minimum Integer Ratio

This feature was introduced.

Release 6.4.1

Implementing UCMP chapter

Minimum Remaining Lifetime for IS-IS

This feature was introduced.

Release 6.5.1

See Minimum Remaining Lifetime section in Implementing IS-ISchapter.

IS-IS Distribute List

This feature was introduced.

Release 6.5.1

Customize Routes for IS-IS in Implementing IS-IS chapter.

Purge Originator Identification TLV for IS-IS

This feature was introduced.

Release 6.5.1

Purge Originator Identification TLV for IS-IS in Implementing IS-IS chapter.

OSPF Authentication with Keychain

This feature was introduced.

Release 6.5.1

Configure Authentication Message Digest Management for OSPF

Configuring Global Weighted SRLG Protection

This feature was introduced.

Release 6.5.1

Implementing IS-IS chapter.

Bidirectional Forwarding Detection over Generic Routing Encapsulation

This feature was introduced.

Release 6.5.1

Bidirectional Forwarding Detection over Generic Routing Encapsulation chapter in the the Implementing BFD chapter.