Cisco Catalyst 4500 Series Software Configuration Guide

19-6
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 19 Configuring Layer 2 Ethernet Interfaces
Configuring Ethernet Interfaces for Layer 2 Switching
This example shows how to configure the Fast Ethernet interface 5/8 as an 802.1Q trunk. This example
assumes that the neighbor interface is configured to support 802.1Q trunking and that the native VLAN
defaults to VLAN 1:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface fastethernet 5/8
Switch(config-if)# shutdown
Switch(config-if)# switchport mode dynamic desirable
Switch(config-if)# switchport trunk encapsulation dot1q
Switch(config-if)# no shutdown
Switch(config-if)# end
Switch# exit
This example shows how to verify the running configuration:
Switch# show running-config interface fastethernet 5/8
Building configuration...
Current configuration:
!
interface FastEthernet5/8
switchport mode dynamic desirable
switchport trunk encapsulation dot1q
end
This example shows how to verify the switch port configuration:
Switch# show interfaces fastethernet 5/8 switchport
Name: Fa5/8
Switchport: Enabled
Administrative Mode: dynamic desirable
Operational Mode: trunk
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Enabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Step 8
Switch(config-if)# switchport trunk
pruning vlan {add | except | none |
remove}
vlan_num[,vlan_num[,vlan_num[,....]]
(Optional) Configures the list of VLANs allowed to be pruned
from the trunk (see the “VLAN Trunking Protocol” section on
page 17-7). The default list of VLANs allowed to be pruned
contains all VLANs, except for VLAN 1.
Step 9
Switch(config-if)# no shutdown
Activates the interface. (Required only if you shut down the
interface.)
Step 10
Switch(config-if)# end
Exits interface configuration mode.
Step 11
Switch# show running-config interface
{fastethernet | gigabitethernet |
tengigabitethernet} slot/port
Displays the running configuration of the interface.
Step 12
Switch# show interfaces [fastethernet |
gigabitethernet | tengigabitethernet]
slot/port switchport
Displays the switch port configuration of the interface.
Step 13
Switch# show interfaces [{fastethernet |
gigabitethernet | tengigabitethernet}
slot/port] trunk
Displays the trunk configuration of the interface.
Command Purpose

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