Cisco Catalyst 4500 Series Administration Guide

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Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
Chapter 34 Configuring Layer 3 Interfaces
Configuring Physical Layer 3 Interfaces
Configuring Physical Layer 3 Interfaces
Note Before you can configure physical Layer 3 interfaces, you must enable IP routing if IP routing is
disabled, and specify an IP routing protocol.
To configure physical Layer 3 interfaces, perform this task:
This example shows how to configure an IP address on Fast Ethernet interface 2/1:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# ip routing
Switch(config)# interface fastethernet 2/1
Switch(config-if)# no switchport
Switch(config-if)# ip address 10.1.1.1 255.255.255.248
Switch(config-if)# no shutdown
Switch(config-if)# end
Switch#
This example shows how to use the show running-config command to display the interface IP address
configuration of Fast Ethernet interface 2/1:
Switch# show running-config
Building configuration...
!
interface FastEthernet2/1
no switchport
ip address 10.1.1.1 255.255.255.248
!
…
ip classless
no ip http server
!
!
line con 0
line aux 0
Command Purpose
Step 1
Switch(config)#ip routing
Enables IP routing (required only if disabled)
Step 2
Switch(config)# interface {fastethernet |
gigabitethernet | tengigabitethernet} slot/port}
| {port-channel port_channel_number}
Selects an interface to configure.
Step 3
Switch(config-if)#no switchport
Converts this port from physical Layer 2 port to physical
Layer 3 port.
Step 4
Switch(config-if)# ip address ip_address
subnet_mask
Configures the IP address and IP subnet.
Step 5
Switch(config-if)# no shutdown
Enables the interface.
Step 6
Switch(config-if)# end
Exits configuration mode.
Step 7
Switch# copy running-config startup-config
Saves your configuration changes to NVRAM.
Step 8
Switch# show interfaces [type slot/interface]
Switch# show ip interfaces [type slot/interface]
Switch# show running-config interfaces [type
slot/interface]
Verifies the configuration.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E