Allied-telesis AT-S63 User Manual Page 82

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Chapter 5: Port Parameters
82 Section I: Basic Operations
Description (Name)
Use this selection to assign a name to a port, from 1 to 15
alphanumeric characters. Spaces are allowed, but do not use special
characters, such as asterisks or exclamation points. (You cannot
assign a name when you are configuring more than one port.)
Status
Use this selection to enable or disable a port. When disabled, a port
does not accept or forward frames.
You might disable a port if a problem occurs with the end node or
cable. After the problem has been fixed, you can enable the port again
to resume normal operation.
You might also disable an unused port to secure it from unauthorized
connections.
The possible settings are:
Enabled - The port forwards ingress and egress packets. This is the
default setting.
Disabled - The port does not forward any ingress or egress packets.
Speed and Duplex
You use this selection to configure a port for Auto-Negotiation or to
manually set a port’s speed and duplex mode.
If you select Auto-Negotiate for Auto-Negotiation, which is the default
setting, the switch sets both speed and duplex mode for the port
automatically.
Note the following about the operation of Auto-Negotiation on a switch
port:
In order for a switch port to successfully autonegotiate its duplex
mode with an end node, the end node should also be using Auto-
Negotiation. Otherwise, a duplex mode mismatch can occur. A
switch port using Auto-Negotiation defaults to half-duplex if it
detects that the end node is not using Auto-Negotiation. This
results in a mismatch if the end node is operating at a fixed duplex
mode of full-duplex.
To avoid this problem when connecting an end node with a fixed
duplex mode of full-duplex to a switch port, you should disable
Auto-Negotiation on the port and set its speed and duplex mode
manually.
If you disable Auto-Negotiation on a twisted pair port, the auto-
MDI/MDI-X feature on a port is also disabled, and the port defaults
to the MDI-X configuration. If you disable Auto-Negotiation and set
a port’s speed and duplex mode manually, you might also need to
set the port’s MDI/MDI-X setting as well.
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