Specifications

5-2

Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR

OL-26895-01

Chapter 5 Configuring Layer 2 Interfaces

Defining a Range Macro

A range macro allows you to create a name that defines a range of interfaces on the Cisco MWR 2941.

Follow these steps to configure an interface range macro.

Configuring Layer 2 Optional Interface Features

• Interface Speed and Duplex Configuration Guidelines, page 5-2

• Configuring the Interface Speed, page 5-3

• Configuring the Interface Duplex Mode, page 5-3

• Configuring a Description for an Interface, page 5-4

• Configuring a Layer 2 Interface as a Layer 2 Trunk, page 5-5

• Configuring a Layer 2 Interface as Layer 2 Access, page 5-6

Interface Speed and Duplex Configuration Guidelines

Use the following guidelines when you configure an interface speed and duplex mode:

• Speed and duplex commands apply only to FastEthernet interfaces. They do not apply to the onboard

Gigabit Ethernet ports.

• If both ends of the line support autonegotiation, use the default autonegotiation settings.

• If one interface supports auto negotiation and the other end does not, configure duplex and speed on

both interfaces; do not use the auto setting on the supported side.

• Both ends of the line need to be configured to the same setting; for example, both hard-set or both

auto-negotiate. Mismatched settings are not supported.

Command Purpose

Step 1

enable

Example:

Router> enable

Router#

Enter enable mode.

Step 2

configure terminal

Example:

Router# configure terminal

Router(config)#

Enter configuration mode.

Step 3

define interface-range macro

interface slot/port - port

Example:

Router(config)# define

interface-range first_three

GigabitEthernet0/1 - 2

Use the define interface range command to create the macro.