Version 6 SuperStack 3 Switch 4400 Management Interface Reference Guide

Web Management Interface - Physical Interface Ethernet Setup
http://support.3com.com/infodeli/tools/switches/4400/DHA1720-3AAA08/htmweb/ethernetsetup.htm[11/15/2010 3:44:24 PM]
Displays the media type of the link connected to the port(s).
Current Port Mode:
Displays the speed and duplex mode of 10BASE-T/100-BASE-TX, 100BASE-FX,
100BASE-TX/1000BASE-T or 1000BASE-LX/SX ports (HD indicates half duplex, FD
indicates full duplex). If auto-negotiation is enabled, Auto is displayed.
Current Flow Control:
Displays the current flow control setting for the port(s).
Port State:
Enabled / Disabled
Allows you to enable or disable the port(s) (that is, turn the port(s) on or off).
Label:
Allows you to assign a name to the port(s).
Port Mode:
Auto / 10HD / 10FD / 100HD / 100FD / 1000FD
This listbox allows you to specify the speed and duplex mode of 10BASE-T/100-
BASE-TX, 100BASE-FX, 100BASE-TX/1000BASE-T or 1000BASE-LX/SX ports (HD
indicates half duplex, FD indicates full duplex).
CAUTION: To communicate without errors, both ends of a link must use the
same duplex mode.
Ports operating at 1000 Mbps support full duplex mode only.
Advertised Capabilities: 10HD / 10FD / 100HD / 100FD / 1000FD / Flow Control
Allows you to select the values that are advertised. The port will continue to auto-
negotiate, but will only advertise the selected states.
1000BASE-SX ports support auto-negotiation, however, the standard defines that
1000BASE-SX can only operate at 1000 Mbps, full duplex mode, so they can only
auto-negotiate flow control. 1000BASE-SX ports do not support auto-negotiation of
port speed.
Ports at both ends of the link must be set to auto-negotiate.
HD Flow Control:
Enabled / Disabled
Allows you to enable or disable the flow control that can be used when the port is
operating in half duplex. Flow control minimizes packet loss during periods of
congestion on the port.
The HD Flow Control listbox should be set to disabled if the port is connected to
multiple devices using a hub. If it is enabled, local traffic between those multiple
devices is inhibited. HD Flow Control is not supported by 1000BASE-LX/SX ports.
Default FD Flow Control:
Enabled / Disabled / TxOn / RxOn
If auto-negotiation is disabled, this listbox allows you to enable or disable the
802.3x flow control that can be used when the port is operating in full duplex. If
auto-negotiation is enabled, the listbox displays Auto, and you cannot change the
flow control setting for the port manually. Flow control minimizes packet loss during
periods of congestion on the port.
rxOn and txOn are unidirectional flow control commands that may be set up for
fiber Gigabit Ethernet ports. If these command options are displayed, 3Com
recommends that they should only be configured by an experienced Network
Administrator from the web interface.