Dell PowerSwitch S4112F-ON OS10 Enterprise Edition User Guide Release 10.4.0ER - Page 89

Energy-efficient Ethernet, Ethernet

Page 89 highlights

Interface index is 17306108 Internet address is not set Mode of IPv4 Address Assignment: not set Interface IPv6 oper status: Disabled MTU 1532 bytes, IP MTU 1500 bytes LineSpeed 100G, Auto-Negotiation on FEC is cl91-rs, Current FEC is cl91-rs Flowcontrol rx off tx off ARP type: ARPA, ARP Timeout: 60 Last clearing of "show interface" counters: 00:00:17 Queuing strategy: fifo Input statistics: 7 packets, 818 octets 2 64-byte pkts, 0 over 64-byte pkts, 5 over 127-byte pkts 0 over 255-byte pkts, 0 over 511-byte pkts, 0 over 1023-byte pkts 7 Multicasts, 0 Broadcasts, 0 Unicasts 0 runts, 0 giants, 0 throttles 0 CRC, 0 overrun, 0 discarded Output statistics: 15 packets, 1330 octets 10 64-byte pkts, 0 over 64-byte pkts, 5 over 127-byte pkts 0 over 255-byte pkts, 0 over 511-byte pkts, 0 over 1023-byte pkts 15 Multicasts, 0 Broadcasts, 0 Unicasts 0 throttles, 0 discarded, 0 Collisions, 0 wred drops Rate Info(interval 30 seconds): Input 0 Mbits/sec, 0 packets/sec, 0% of line rate Output 0 Mbits/sec, 0 packets/sec, 0% of line rate Time since last interface status change: 00:00:13 --more-- Energy-efficient Ethernet Energy-efficient Ethernet (EEE) reduces power the consumption of physical layer devices (PHYs) during idle periods. EEE allows Dell Networking devices to conform to green computing standards. An Ethernet link consumes power when a link is idle. EEE allows for Ethernet links to use the regular power mode only during data transmission. EEE is enabled on devices that support LOW POWER IDLE (LPI) mode. Such devices can save power by entering LPI mode during periods when no data is transmitted. In LPI mode, systems on both ends of the link saves power by shutting down certain services. EEE transitions into and out of LPI mode transparently to upper-layer protocols and applications. EEE advertises during the auto-negotiation stage. Auto-negotiation detects abilities supported by the device at the other end of the link, determines common abilities, and configures joint operation. Auto-negotiation performs at power-up, on command from the LAN controller, on detection of a PHY error, or following Ethernet cable reconnection. During the link establishment process, both link partners indicate their EEE capabilities. If EEE is supported by both link partners for the negotiated PHY type, the EEE function is used independently in either direction. Changing the EEE configuration resets the interface because the device restarts Layer 1 auto-negotiation. You may want to enable link layer discovery protocol (LLDP) for devices that require longer wake-up times before they are able to accept data on their receive paths. Doing so enables the device to negotiate for extended system wake-up times from the transmitting link partner. Enable energy-efficient Ethernet To reduce power consumption, enable EEE. EEE is disabled by default. 1 Enter the physical Ethernet interface information in CONFIGURATION mode. interface ethernet node/slot/port[:subport] Interfaces 89

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Interface index is 17306108
Internet address is not set
Mode of IPv4 Address Assignment: not set
Interface IPv6 oper status: Disabled
MTU 1532 bytes, IP MTU 1500 bytes
LineSpeed 100G, Auto-Negotiation on
FEC is cl91-rs, Current FEC is cl91-rs
Flowcontrol rx off tx off
ARP type: ARPA, ARP Timeout: 60
Last clearing of "show interface" counters: 00:00:17
Queuing strategy: fifo
Input statistics:
7 packets, 818 octets
2 64-byte pkts, 0 over 64-byte pkts, 5 over 127-byte pkts
0 over 255-byte pkts, 0 over 511-byte pkts, 0 over 1023-byte pkts
7 Multicasts, 0 Broadcasts, 0 Unicasts
0 runts, 0 giants, 0 throttles
0 CRC, 0 overrun, 0 discarded
Output statistics:
15 packets, 1330 octets
10 64-byte pkts, 0 over 64-byte pkts, 5 over 127-byte pkts
0 over 255-byte pkts, 0 over 511-byte pkts, 0 over 1023-byte pkts
15 Multicasts, 0 Broadcasts, 0 Unicasts
0 throttles, 0 discarded, 0 Collisions, 0 wred drops
Rate Info(interval 30 seconds):
Input 0 Mbits/sec, 0 packets/sec, 0% of line rate
Output 0 Mbits/sec, 0 packets/sec, 0% of line rate
Time since last interface status change: 00:00:13
--more--
Energy-efficient
Ethernet
Energy-efficient
Ethernet (EEE) reduces power the consumption of physical layer devices (PHYs) during idle periods. EEE allows Dell
Networking devices to conform to green computing standards.
An Ethernet link consumes power when a link is idle. EEE allows for Ethernet links to use the regular power mode only during data
transmission. EEE is enabled on devices that support LOW POWER IDLE (LPI) mode. Such devices can save power by entering LPI mode
during periods when no data is transmitted.
In LPI mode, systems on both ends of the link saves power by shutting down certain services. EEE transitions into and out of LPI mode
transparently to upper-layer protocols and applications.
EEE advertises during the auto-negotiation stage. Auto-negotiation detects abilities supported by the device at the other end of the link,
determines common abilities, and
configures
joint operation.
Auto-negotiation performs at power-up, on command from the LAN controller, on detection of a PHY error, or following Ethernet cable re-
connection. During the link establishment process, both link partners indicate their EEE capabilities. If EEE is supported by both link
partners for the negotiated PHY type, the EEE function is used independently in either direction.
Changing the EEE
configuration
resets the interface because the device restarts Layer 1 auto-negotiation. You may want to enable link layer
discovery protocol (LLDP) for devices that require longer wake-up times before they are able to accept data on their receive paths. Doing
so enables the device to negotiate for extended system wake-up times from the transmitting link partner.
Enable
energy-efficient
Ethernet
To reduce power consumption, enable EEE. EEE is disabled by default.
1
Enter the physical Ethernet interface information in CONFIGURATION mode.
interface ethernet
node/slot/port[:subport]
Interfaces
89