Finding the Ethernet speed of the device

[TCC_2]

• Introduction
• Core Issue
• Resolution
• Problem Type
• Products
• Addtional Information
• Reference

Introduction

Finding the Ethernet speed of the device

Core Issue

Locating a device's Ethernet speed.

Resolution

• Access Point: The Access Point's Ethernet port will support either 10 Mbps or 100 Mbps over an RJ-45 connector, in either half- or full-duplex. We advise that you hard set the speed and duplex to the same settings as your switch or hub.

• Workgroup Bridge: The bridge's Ethernet port supports 10 mbps over a 10baseT RJ-45 connector, and only half-duplex is supported.

• Base Station: The base station's Ethernet port supports 10 Mbps over a 10base T RJ-45 connector, and only half-duplex is supported.

Problem Type

Technical product specification / features

Products

Access point

Base Station

Workgroup bridges

Addtional Information

Configuring Ethernet Speed and Duplex Settings

The Cisco 1941-W ISR interface supports only 1000 Mbps speed and duplex settings by default, and the interface is always up. When the wireless device receives inline power from a switch, any change in the speed or duplex settings that resets the Ethernet link reboots the wireless device.

Note The speed and duplex settings on the wireless device Ethernet port must match the Ethernet settings on the port to which the wireless device is connected. If you change the settings on the port to which the wireless device is connected, change the settings on the wireless device Ethernet port to match.

The Ethernet speed and duplex are set to auto by default. To configure Ethernet speed and duplex, follow these steps, beginning in privileged EXEC mode:

Summary STEPS

1. configure terminal

2. interface fastethernet0

3. speed {10 | 100 | auto}

4. duplex {auto | full | half}

5. end

6. show running-config

7. copy running-config startup-config

Detailed STEPS

Command or Action

Purpose

Step 1	configure terminal	Enters global configuration mode.
Step 2	interface fastethernet0	Enters configuration interface mode.
Step 3	speed {10 | 100 | auto}	Configures the Ethernet speed.Note We recommend that you use auto, the default setting.
Step 4	duplex {auto | full | half}	Configures the duplex setting. Note We recommend that you use auto, the default setting.
Step 5	end	Returns to privileged EXEC mode.
Step 6	show running-config	Verifies your entries.
Step 7	copy running-config startup-config	(Optional) Saves your entries in the configuration file.

Reference

Administering Wireless Device Communication - Configuring Ethernet Speed and Duplex Settings