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Configuring Green Ethernet, Green Ethernet Overview

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Port Management Configuring Green Ethernet 9 Configuring Green Ethernet This section describes the Green Ethernet feature that is designed to save power on the switch. It contains the following sections: • Green Ethernet Overview • Setting Global Green Ethernet Properties • Setting Green Ethernet Properties for Ports Green Ethernet Overview Green Ethernet is a common name for a set of features that is designed to be environmentally friendly, and to reduce the power consumption of a device. Green Ethernet is different from EEE in that green ethernet energy-detect is enabled on all devices where only the Gigabyte ports are enable with EEE. The Green Ethernet feature can reduce overall power usage in the following ways: • Energy-Detect Mode-On an inactive link, the port moves into inactive mode, saving power while keeping the Administrative status of the port Up. Recovery from this mode to full operational mode is fast, transparent, and no frames are lost. This mode is supported on both GE and FE ports. • Short-Reach Mode-This feature provides for power savings on a short length of cable. After cable length is analyzed, the power usage is adjusted for various cable lengths. If the cable is shorter than 50 meters, the switch uses less power to send frames over the cable, thus saving energy. This mode is only supported on RJ45 GE ports; it does not apply to Combo ports. This mode is globally disabled by default. It cannot be enabled if EEE mode is enabled (see below). In addition to the above Green Ethernet features, the 802.3az Energy Efficient Ethernet (EEE) is found on devices supporting GE ports. EEE reduces power consumption when there is no traffic on the port. See 802.3az Energy Efficient Ethernet Feature for more information (available on GE models only). EEE is enabled globally by default. On a given port, if EEE is enabled, short reach mode be disabled. If Short Reach Mode is enabled, EEE be grayed out. Cisco Small Business 200 Series Smart Switch Administration Guide 112

Section	Page
Getting Started	7
Starting the Web-based Switch Configuration Utility	7
Quick Start Switch Configuration	11
Interface Naming Conventions	11
Window Navigation	13
Viewing Statistics	17
Viewing Ethernet Interfaces	17
Viewing Etherlike Statistics	18
Viewing 802.1X EAP Statistics	19
Managing RMON	21
Managing System Logs	24
Setting System Log Settings	24
Setting Remote Logging Settings	26
Viewing Memory Logs	27
Managing System Files	29
Types of System Files	29
Upgrade/Backup Firmware/Language	32
Downloading or Backing-up a Configuration or Log	34
Viewing Configuration Files Properties	37
Copying Configuration Files	38
DHCP Auto Configuration	39
General Administrative Information	43
Switch Models	43
System Information	45
Rebooting the Switch	47
Monitoring the Fan Status and Temperature	48
Defining Idle Session Timeout	48
Pinging a Host	49
System Time	51
System Time Options	52
SNTP Modes	53
Configuring System Time	54
Managing Device Diagnostics	61
Testing Copper Ports	61
Displaying Optical Module Status	63
Configuring Port and VLAN Mirroring	64
Viewing CPU Utilization and Secure Core Technology	66
Configuring Discovery	68
Configuring Bonjour Discovery	68
LLDP and CDP	69
Configuring LLDP	70
Configuring CDP	91
Port Management	100
Configuring Ports	100
Setting Basic Port Configuration	101
Configuring Link Aggregation	103
Configuring Green Ethernet	111
Smartports	118
Overview	118
What is a Smartport	119
Smartport Types	119
Smartport Macros	122
Macro Failure and the Reset Operation	123
How the Smartport Feature Works	124
Auto Smartport	124
Error Handling	128
Default Configuration	128
Relationships with Other Features and Backwards Compatibility	129
Common Smartport Tasks	129
Configuring Smartport Using The Web-based Interface	131
Built-in Smartport Macros	136
Managing Power-over-Ethernet Devices	148
PoE on the Switch	148
Configuring PoE Properties	151
Configuring the PoE Power, Priority, and Class	152
VLAN Management	155
VLANs	155
Configuring Default VLAN Settings	158
Creating VLANs	159
Configuring VLAN Interface Settings	160
Defining VLAN Membership	161
Voice VLAN	165
Configuring the Spanning Tree Protocol	179
STP Flavors	179
Configuring STP Status and Global Settings	180
Defining Spanning Tree Interface Settings	182
Configuring Rapid Spanning Tree Settings	184
Managing MAC Address Tables	187
Configuring Static MAC Addresses	188
Managing Dynamic MAC Addresses	188
Configuring Multicast Forwarding	190
Multicast Forwarding	190
Defining Multicast Properties	193
Adding MAC Group Address	195
Adding IP Multicast Group Addresses	197
Configuring IGMP Snooping	198
MLD Snooping	200
Querying IGMP/MLD IP Multicast Group	203
Defining Multicast Router Ports	204
Defining Forward All Multicast	205
Defining Unregistered Multicast Settings	206
Configuring IP Information	207
Management and IP Interfaces	207
Configuring ARP	219
Domain Name Systems	220
Configuring Security	224
Defining Users	225
Configuring RADIUS	228
Configuring Management Access Authentication	230
Defining Management Access Method	231
Configuring TCP/UDP Services	236
Defining Storm Control	237
Configuring Port Security	238
Configuring 802.1X	241
Denial of Service Prevention	247
Using the SSL Feature	249
SSL Overview	249
Default Settings and Configuration	249
SSL Server Authentication Settings	250
Secure Sensitive Data	252
Introduction	252
SSD Rules	253
SSD Properties	258
Configuration Files	261
SSD Management Channels	266
Menu CLI and Password Recovery	266
Configuring SSD	267
Configuring Quality of Service	270
QoS Features and Components	271
Configuring QoS - General	272

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Port Management

Configuring Green Ethernet

Cisco Small Business 200 Series Smart Switch Administration Guide

112

Configuring Green Ethernet

This section describes the Green Ethernet feature that is designed to save power

on the switch.

It contains the following sections:

•

Green Ethernet Overview

•

Setting Global Green Ethernet Properties

•

Setting Green Ethernet Properties for Ports

Green Ethernet Overview

Green Ethernet is a common name for a set of features that is designed to be

environmentally friendly, and to reduce the power consumption of a device. Green

Ethernet is different from EEE in that green ethernet energy-detect is enabled on

all devices where only the Gigabyte ports are enable with EEE.

The Green Ethernet feature can reduce overall power usage in the following ways:

•

Energy-Detect Mode

—On an inactive link, the port moves into inactive

mode, saving power while keeping the Administrative status of the port Up.

Recovery from this mode to full operational mode is fast, transparent, and no

frames are lost. This mode is supported on both GE and FE ports.

•

Short-Reach Mode

—This feature provides for power savings on a short

length of cable. After cable length is analyzed, the power usage is adjusted

for various cable lengths. If the cable is shorter than 50 meters, the switch

uses less power to send frames over the cable, thus saving energy. This

mode is only supported on RJ45 GE ports; it does not apply to Combo

ports.

This mode is globally disabled by default. It cannot be enabled if EEE mode

is enabled (see below).

In addition to the above Green Ethernet features, the

802.3az Energy Efficient

Ethernet (EEE)

is found on devices supporting GE ports. EEE reduces power

consumption when there is no traffic on the port. See

802.3az Energy Efficient

Ethernet Feature

for more information (available on GE models only).

EEE is enabled globally by default. On a given port, if EEE is enabled, short reach

mode be disabled. If Short Reach Mode is enabled, EEE be grayed out.