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Implementing EIGRP on Cisco IOS XR Software
How to Implement EIGRP on Cisco IOS XR Software
RC-148
Cisco IOS XR Routing Configuration Guide
OL-14356-01
When BGP and EIGRP peers that support the SoO extended community receive these routes, they also
receive the associated SoO values and pass them to other BGP and EIGRP peers that support the SoO
extended community. This filtering is designed to prevent transient routes from being relearned from the
originating site, which prevents transient routing loops from occurring.
In conjunction with BGP cost community, EIGRP, BGP, and the RIB ensure that paths over the MPLS
VPN core are preferred over backdoor links.
For MPLS and IP VPN and SoO configuration information, see Implementing MPLS Layer 3 VPNs in
Cisco IOS XR Multiprotocol Label Switching Configuration Guide.
IPv6 and IPv6 VPN Provider Edge Support over MPLS and IP
IPv6 Provider Edge (6PE) and IPv6 VPN Provider Edge (6VPE) uses the existing IP and Multiprotocol
Label Switching (MPLS) IPv4 core infrastructure for IPv6 transport. 6PE and 6VPE enable IPv6 sites
to communicate with each other over an IP and MPLS IPv4 core network using MPLS label switched
paths (LSPs).
Note This feature is supported on Cisco XR 12000 Series Routers.
EIGRP is an Interior Gateway Protocol (IGP) that supports the 6PE or 6VPE provider edge-to-customer
edge protocol by supporting the configuration of IPv6 address families in EIGRP VRF and exchanging
IPv6 routing updates in the L3VPN environment
For detailed information on configuring 6PE and 6VPE over MPLS and IP, see Cisco IOS XR
Multiprotocol Label Switching Configuration Guide.
How to Implement EIGRP on Cisco IOS XR Software
This section contains instructions for the following tasks:
• Enabling EIGRP Routing, page RC-149 (required)
• Configuring Route Summarization for an EIGRP Process, page RC-151 (optional)
• Redistributing Routes for EIGRP, page RC-153 (optional)
• Creating a Route Policy and Attaching It to an EIGRP Process, page RC-155 (optional)
• Configuring Stub Routing for an EIGRP Process, page RC-158 (optional)
• Configuring EIGRP as a PE-CE Protocol, page RC-159 (optional)
• Redistributing BGP Routes into EIGRP, page RC-161 (optional)
• Monitoring EIGRP Routing, page RC-163 (optional)
• Monitoring EIGRP Routing, page RC-163 (optional)
Note To save configuration changes, you must commit changes when the system prompts you.