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10-8
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 10 Configuring Interface Characteristics
Configuring Ethernet Interfaces
–
port-channel port-channel-number - port-channel-number, where port-channel-number is
from 1 to 6.
• You must add a space between the interface numbers and the hyphen when entering an
interface-range. For example, fastethernet 0/1
- 5 is a valid range; fastethernet 0/1-5 is not a valid
range.
• The VLAN interfaces must have been configured with the interface vlan command. The show
running-config privileged EXEC command output shows the configured VLAN interfaces. VLAN
interfaces that do not appear by using the show running-config command cannot be used as
interface-ranges.
• All interfaces in a range must be the same type; that is, all Fast Ethernet ports, all Gigabit Ethernet
ports, all EtherChannel ports, or all VLANs, but you can combine multiple interface types in a
macro.
This example shows how to define an interface-range macro named enet_list to select Fast Ethernet
ports
1 to 4 and to verify the macro configuration:
Switch# configure terminal
Switch(config)# define interface-range enet_list fastethernet0/1 - 4
Switch(config)# end
Switch# show running-config | include define
define interface-range enet_list FastEthernet0/1 - 4
This example shows how to create a multiple-interface macro named macro1:
Switch# configure terminal
Switch(config)# define interface-range macro1 gigabitethernet0/1 - 2, fastethernet0/5 - 7
Switch(config)# end
Switch#
This example shows how to enter interface range configuration mode for the interface-range macro
enet_list:
Switch# configure terminal
Switch(config)# interface range macro enet_list
Switch(config-if-range)#
This example shows how to delete the interface-range macro enet_list and to verify that it has been
deleted.
Switch# configure terminal
Switch(config)# no define interface-range enet_list
Switch# show run | include define
Configuring Ethernet Interfaces
The switch supports these interface types:
• Physical ports—Switch ports, including access and trunk ports
• Port channels—EtherChannel of interfaces
• VLANs
These sections describe the default interface configuration and the optional features that you can
configure on most physical interfaces:
• Default Ethernet Interface Configuration, page 10-9
• Configuring Interface Speed and Duplex Mode, page 10-10