Cisco IOS XR Interface and Hardware Component Configuration Guide for the Cisco XR 12000 Series Router
Preface
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Preface

Table Of Contents

Preface

Changes to This Document

Obtaining Documentation and Submitting a Service Request


Preface


The Cisco IOS XR Interface and Hardware Component Configuration Guide for the Cisco XR 12000 Series Router provides information and procedures related to router interface and hardware configuration.

The preface contains the following sections:

Changes to This Document

Obtaining Documentation and Submitting a Service Request

Changes to This Document

Table 1 lists the technical changes made to this document since it was first printed.

Table 1 Changes to This Document 

Revision
Date
Change Summary

OL-23257-02

March 2011

Added information about the maximum supported BFD rates per linecard.

OL-23257-02

December 2010

Includes the following updates for Cisco IOS XR Release 4.0.1:

Support for the following features for Circuit Emulation over Packet (CEoP) Shared Port Adapters (SPAs) was added:

ATM Layer 2 QoS

Inverse Multiplexing (IMA)

Support for the following BFD features was added:

The echo latency detect command was added to enable latency detection for BFD echo packets on non-bundle interfaces.

The echo startup validate command was added to verify the echo path before starting a BFD session on non-bundle interfaces.

Note Documentation was added for the following BFD features introduced in earlier Cisco IOS XR releases:

Support for the following applications with BFD was added:

Hot Standby Router Protocol (HSRP)

Virtual Router Redundancy Protocol (VRRP)

The dampening command was added to minimize BFD session flapping and delay session startup.

The echo ipv4 source command was added to specify a source IP address and override the default.

OL-23257-01

September 2010

Initial release of this document.


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