Application Guide

[20]
Software User's
Manual
–
Version 3.0
100Mbps HDX Forces the current port to 100Mbps half-duplex mode.
100Mbps FDX Forces the current port to 100Mbps full-duplex mode.
1Gbps FDX Forces the current port to 1Gbps full-duplex.
Advertise Duplex
When Duplex is set as Auto (i.e. auto negotiation), the port will only advertise the specified duplex as
either Fdx or Hdx to the link partner. By default, the port will advertise all the supported duplexes if the
Duplex is set as Auto.
Advertise Speed
When Speed is set as Auto (i.e. auto negotiation), the port will only advertise the specified speeds
(10M, 100M, 1G) to the link partner. By default, the port will advertise all the supported speeds if
Speed is set as Auto.
Flow Control
When Auto Speed is selected on a port, this section indicates the flow control capability that is
advertised to the link partner. When a fixed-speed setting is selected, the specific speed selected is
what is used. The Current Rx column indicates whether pause frames on the port are obeyed, and the
Current Tx column indicates whether pause frames on the port are transmitted. The Rx and Tx
settings are determined by the result of the last Auto Negotiation. Check the configured column to use
flow control. This setting is related to the setting for Configured Link Speed.
NOTE: The 100FX standard doesn’t support Auto Negotiation, so when in 100FX mode, the flow
control capabilities will always be shown as disabled.
PFC
When PFC (802.1Qbb Priority Flow Control) is enabled on a port then flow control on a priority level is
enabled. Through the Priority field, range (one or more) of priorities can be configured, e.g. ‘0-3,7’
which equals ‘0,1,2,3,7’. PFC is not supported through auto negotiation. PFC and Flow Control cannot
both be enabled on the same port.
Maximum Frame Size
Setting Description
Factory
Default
1518~9600
Enter the maximum frame size allowed for the switch port, including
FCS.
The range
is 1518
-
9600 bytes.
9600
Excessive Collision Mode
Configure port transmit collision behavior.
Setting Description
Factory
Default
Discard Discard frame after 16 collisions.
Discard
Restart Restart backoff algorithm after 16 collisions.
Frame Length Check
Configures if frames with incorrect frame length in the EtherType/Length field shall be dropped. An
Ethernet frame contains a field EtherType which can be used to indicate the frame payload size (in