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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 35 Configuring IP Unicast Routing
Configuring EIGRP
To create an EIGRP routing process, you must enable EIGRP and associate networks. EIGRP sends
updates to the interfaces in the specified networks. If you do not specify an interface network, it is not
advertised in any EIGRP update.
Nonstop Forwarding Awareness
The EIGRP NSF Awareness feature is supported for IPv4 in the metro IP access image, beginning with
Cisco IOS Release
12.2(25)SEG. When the neighboring router is NSF-capable, the Layer 3 switch
continues to forward packets from the neighboring router during the interval between the primary Route
Processor (RP) in a router failing and the backup RP taking over, or while the primary RP is manually
reloaded for a nondisruptive software upgrade.
This feature cannot be disabled. For more information on this feature, see the EIGRP Nonstop
Forwarding (NSF) Awareness Feature Guide at this URL:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a0080160010
.html
Configuring Basic EIGRP Parameters
Beginning in privileged EXEC mode, follow these steps to configure EIGRP. Configuring the routing
process is required; other steps are optional:
Set metric No metric set in the route map.
Traffic-share Distributed proportionately to the ratios of the metrics.
Variance 1 (equal-cost load balancing).
1. NSF = Nonstop Forwarding
2. EIGRP NSF awareness is enabled for IPv4 on Cisco ME 3400 switches running the metro IP access image, Cisco IOS Release 12.2(25)SEG or later.
Table 35-7, Part 1 Default EIGRP Configuration (continued)
Feature Default Setting
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
router eigrp autonomous-system Enable an EIGRP routing process, and enter router configuration
mode. The AS number identifies the routes to other EIGRP routers
and is used to tag routing information.
Step 3
network network-number Associate networks with an EIGRP routing process. EIGRP sends
updates to the interfaces in the specified networks.
Step 4
eigrp log-neighbor-changes (Optional) Enable logging of EIGRP neighbor changes to monitor
routing system stability.