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RC-135
Cisco IOS XR Routing Configuration Guide
OL-14356-01
Implementing EIGRP on Cisco IOS XR Software
The Enhanced Interior Gateway Routing Protocol (EIGRP) is an enhanced version of IGRP developed
by Cisco. EIGRP uses distance vector routing technology, which specifies that a router need not know
all the router and link relationships for the entire network. Each router advertises destinations with a
corresponding distance and upon receiving routes, adjusts the distance and propagates the information
to neighboring routes.
This module describes the concepts and tasks you need to implement basic EIGRP configuration using
Cisco IOS XR software.
For EIGRP configuration information related to the following features, see the “Related Documents”
section of this module.
• Multiprotocol Label Switching (MPLS) Layer 3 Virtual Private Network (VPN)
• Site of Origin (SoO) Support
Note For more information about EIGRP on the Cisco IOS XR software and complete descriptions of the
EIGRP commands listed in this module, see the “Related Documents” section of this module. To locate
documentation for other commands that might appear while executing a configuration task, search online
in the Cisco IOS XR software master command index.
Feature History for Implementing EIGRP on Cisco IOS XR Software
Contents
• Prerequisites for Implementing EIGRP on Cisco IOS XR Software, page RC-136
• Restrictions for Implementing EIGRP on Cisco IOS XR Software, page RC-136
Release Modification
Release 3.3.0 This feature was introduced on the Cisco CRS-1 and
Cisco XR 12000 Series Router.
Release 3.4.0 Four-byte autonomous system (AS) number support was added.
Release 3.5.0 IPv6 address family and IPv6 VPN routing and forwarding (VRF) address
family support was added.
IPv6 Provider Edge and IPv6 VPN Provider Edge Transport over
Multiprotocol Label Switching Infrastructure support was added.
Release 3.6.0 No modification.