American Fibertek SM8P-SFP - Manual (Page 58)

Rev.A1
18-May-11 50
Parameter description:
Speed:
Set the speed and duplex of the port. In speed, if the media is 1Gbps
fiber, it is always 1000Mbps and the duplex is full only. If the media is TP,
the Speed/Duplex is comprised of the combination of speed mode,
10/100/1000Mbps, and duplex mode, full duplex and half duplex. The
following table summarized the function the media supports.
Media type NWay Speed Duplex
1000M TP ON/OFF 10/100/1000M Full for all, Half for 10/100
1000M Fiber ON/OFF 1000M Full
In Auto-negotiation mode, no default value. In Forced mode, default
value depends on your setting.
Flow Control:
There are two modes to choose in flow control, including Enable and
Disable. If flow control is set Enable, both parties can send PAUSE frame
to the transmitting device(s) if the receiving port is too busy to handle.
When it is set Disable, there will be no flow control in the port. It drops
the packet if too much to handle.
Maximum Frame:
This module offer 1518~9600 (Bytes) length to make the long packet.
Excessive Collision Mode:
There are two modes to choose when excessive collision happen in half-
duplex condition as below:
Discard: The “Discard” mode determines whether the MAC drop frames
after an excessive collision has occurred. If set, a frame is dropped after
excessive collisions. This is IEEE Std 802.3 half-duplex flow control
operation.
Restart: The “Restart” mode determines whether the MAC retransmits
frames after an excessive collision has occurred. If set, a frame is not
dropped after excessive collisions, but the backoff sequence is restarted.
This is a violation of IEEE Std 802.3, but is useful in non-dropping half-
duplex flow control operation.
Description:
Description of device ports can not include “ # % & ‘ + \.