C
HAPTER
5
| Interface Configuration
Saving Power
– 148 –
S
AVING
P
OWER
Use the Interface > Green Ethernet page to enable power savings mode on
the selected port.
CLI R
EFERENCES
◆
"power-save" on page 714
◆
"show power-save" on page 715
C
OMMAND
U
SAGE
◆
IEEE 802.3 defines the Ethernet standard and subsequent power
requirements based on cable connections operating at 100 meters.
Enabling power saving mode can reduce power used for cable lengths
of 60 meters or less, with more significant reduction for cables of 20
meters or less, and continue to ensure signal integrity.
◆
The power-saving methods provided by this switch include:
■
Power saving when there is no link partner:
Under normal operation, the switch continuously auto-negotiates to
find a link partner, keeping the MAC interface powered up even if no
link connection exists. When using power-savings mode, the switch
checks for energy on the circuit to determine if there is a link
partner. If none is detected, the switch automatically turns off the
transmitter, and most of the receive circuitry (entering Sleep Mode).
In this mode, the low-power energy-detection circuit continuously
checks for energy on the cable. If none is detected, the MAC
interface is also powered down to save additional energy. If energy
is detected, the switch immediately turns on both the transmitter
and receiver functions, and powers up the MAC interface.
■
Power saving when there is a link partner:
Traditional Ethernet connections typically operate with enough
power to support at least 100 meters of cable even though average
network cable length is shorter. When cable length is shorter, power
consumption can be reduced since signal attenuation is proportional
to cable length. When power-savings mode is enabled, the switch
analyzes cable length to determine whether or not it can reduce the
signal amplitude used on a particular link.
N
OTE
:
Power savings can only be implemented on Gigabit Ethernet ports
when using twisted-pair cabling. Power-savings mode on a active link only
works when connection speed is 1 Gbps, and line length is less than 60
meters.
Содержание ES3510MA
Страница 1: ...Management Guide www edge core com 8 Port Layer 2 Fast Ethernet Switch...
Страница 4: ...ABOUT THIS GUIDE 4...
Страница 30: ...CONTENTS 30...
Страница 40: ...FIGURES 40...
Страница 46: ...TABLES 46...
Страница 48: ...SECTION I Getting Started 48...
Страница 72: ...SECTION II Web Configuration 72...
Страница 88: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 88...
Страница 115: ...CHAPTER 4 Basic Management Tasks Resetting the System 115 Figure 23 Restarting the Switch Regularly...
Страница 116: ...CHAPTER 4 Basic Management Tasks Resetting the System 116...
Страница 154: ...CHAPTER 5 Interface Configuration VLAN Trunking 154...
Страница 216: ...CHAPTER 8 Spanning Tree Algorithm Configuring Interface Settings for MSTP 216...
Страница 350: ...CHAPTER 14 Security Measures DHCP Snooping 350...
Страница 440: ...CHAPTER 17 IP Services Displaying the DNS Cache 440...
Страница 484: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 484...
Страница 554: ...CHAPTER 21 System Management Commands Switch Clustering 554...
Страница 574: ...CHAPTER 22 SNMP Commands 574...
Страница 582: ...CHAPTER 23 Remote Monitoring Commands 582...
Страница 636: ...CHAPTER 24 Authentication Commands Management IP Filter 636...
Страница 736: ...CHAPTER 29 Port Mirroring Commands RSPAN Mirroring Commands 736...
Страница 816: ...CHAPTER 34 VLAN Commands Configuring Voice VLANs 816...
Страница 830: ...CHAPTER 35 Class of Service Commands Priority Commands Layer 3 and 4 830...
Страница 848: ...CHAPTER 36 Quality of Service Commands 848...
Страница 900: ...CHAPTER 38 LLDP Commands 900...
Страница 910: ...CHAPTER 39 Domain Name Service Commands 910...
Страница 916: ...CHAPTER 40 DHCP Commands DHCP Client 916...
Страница 948: ...CHAPTER 41 IP Interface Commands IPv6 Interface 948...
Страница 950: ...SECTION IV Appendices 950...
Страница 982: ...INDEX 982...
Страница 983: ......
Страница 984: ...ES3510MA E032010 ST R01 149100000046A...