•
Information About Implementing EIGRP, page 240
•
How to Implement EIGRP , page 253
•
Configuration Examples for Implementing EIGRP , page 269
•
Additional References, page 271
Prerequisites for Implementing EIGRP
You must be in a user group associated with a task group that includes the proper task IDs. The command
reference guides include the task IDs required for each command. If you suspect user group assignment is
preventing you from using a command, contact your AAA administrator for assistance.
Restrictions for Implementing EIGRP
The following restrictions are employed when running EIGRP on this version of Cisco IOS XR software:
•
•
The characters allowed for EIGRP process name are @ . # : - _ only.
•
Simple Network Management Protocol (SNMP) MIB is not supported.
•
Interface static routes are not automatically redistributed into EIGRP, because there are no network
commands.
•
Metric configuration (either through the default-metric command or a route policy) is required for
redistribution of connected and static routes.
•
Auto summary is disabled by default.
•
Stub leak maps are not supported.
Information About Implementing EIGRP
To implement EIGRP, you need to understand the following concepts:
EIGRP Functional Overview
Enhanced Interior Gateway Routing Protocol (EIGRP) is an interior gateway protocol suited for many different
topologies and media. EIGRP scales well and provides extremely quick convergence times with minimal
network traffic.
EIGRP has very low usage of network resources during normal operation. Only hello packets are transmitted
on a stable network. When a change in topology occurs, only the routing table changes are propagated and
not the entire routing table. Propagation reduces the amount of load the routing protocol itself places on the
network. EIGRP also provides rapid convergence times for changes in the network topology.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.1.x
240 OL-30423-03
Implementing EIGRP
Prerequisites for Implementing EIGRP
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