Enabling Ip Routing - Cisco WS-C3550-12G Software Configuration Manual

Enabling IP Routing

GigabitEthernet0/1 is up, line protocol is up
Internet protocol processing disabled
GigabitEthernet0/2 is up, line protocol is down
Internet protocol processing disabled
Enabling IP Routing
By default, the switch is in Layer 2 switching mode and IP routing is disabled. To use the Layer 3
capabilities of the switch, you must enable IP routing.
Beginning in privileged EXEC mode, follow these steps to enable IP routing:
Command
Step 1 configure terminal
Step 2
ip routing
Step 3
router ip_routing_protocol
Step 4
end
Step 5
show running-config
Step 6 copy running-config startup-config
Use the no ip routing global configuration command to disable routing.
This example shows how to enable IP routing using RIP as the routing protocol:
Switch# configure terminal
Enter configuration commands, one per line.
Switch(config)# ip routing
Switch(config)# router rip
Switch(config-router)# network 10.0.0.0
Switch(config-router)# end
You can now set up parameters for the selected routing protocols as described in these sections:
•
•
•
•
You can also configure nonprotocol-specific features:
•
Catalyst 3550 Multilayer Switch Software Configuration Guide
22-24
Configuring RIP, page 22-25
Configuring IGRP, page 22-30
Configuring OSPF, page 22-35
Configuring EIGRP, page 22-46
Configuring Protocol-Independent Features, page 22-53
Purpose
Enter global configuration mode.
Enable IP routing.
Specify an IP routing protocol. This step might include other
commands, such as specifying the networks to route with the
network (RIP) router configuration command. For information on
specific protocols, refer to sections later in this chapter and to the
Cisco IOS IP and IP Routing Configuration Guide for Release 12.1.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
End with CNTL/Z.
Chapter 22 Configuring IP Unicast Routing
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