User's Manual

38-40
Catalyst 3750 Switch Software Configuration Guide
OL-8550-09
Chapter 38 Configuring IP Unicast Routing
Configuring EIGRP
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:
Use the no forms of these commands to disable the feature or return the setting to the default value.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
router eigrp autonomous-system number Enable an EIGRP routing process, and enter router configuration
mode. The AS number identifies the routes to other EIGRP routers
and tags routing information.
Step 3
nsf (Optional) Enable EIGRP NSF. Enter this command on the stack
master and on all of its peers.
Step 4
network network-number Associate networks with an EIGRP routing process. EIGRP sends
updates to the interfaces in the specified networks.
Step 5
eigrp log-neighbor-changes (Optional) Enable logging of EIGRP neighbor changes to monitor
routing system stability.
Step 6
metric weights tos k1 k2 k3 k4 k5 (Optional) Adjust the EIGRP metric. Although the defaults have
been carefully set to provide excellent operation in most networks,
you can adjust them.
Caution Setting metrics is complex and is not recommended
without guidance from an experienced network
designer.
Step 7
offset list [access-list number | name] {in | out}
offset [type number]
(Optional) Apply an offset list to routing metrics to increase
incoming and outgoing metrics to routes learned through EIGRP.
You can limit the offset list with an access list or an interface.
Step 8
no auto-summary (Optional) Disable automatic summarization of subnet routes into
network-level routes.
Step 9
ip summary-address eigrp
autonomous-system-number address mask
(Optional) Configure a summary aggregate.
Step 10
end Return to privileged EXEC mode.
Step 11
show ip protocols Verify your entries.
Step 12
show ip protocols Verify your entries.
For NSF awareness, the output shows:
*** IP Routing is NSF aware ***
EIGRP NSF enabled
Step 13
copy running-config startup-config (Optional) Save your entries in the configuration file.