D-Link DES-3624 Product Manual - Page 52

Port Configuration screen, Switch, Module, Port Type, State, Speed/Duplex, Flow Ctrl

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Stackable NWay Ethernet Switch User's Guide Figure 6-14. Port Configuration screen Items in the above window are defined as follows: ♦ Switch Specifies the Switch where the port is being configured. ♦ Module Specifies the module where the port is being configured. ♦ Port Specifies the port that will be configured. ♦ Port Type Specifies the speed and cable type of the selected port. ♦ State Enables or Disables the port. This amounts to turning the port on or off. ♦ Speed/Duplex Selects the desired Speed and Duplex settings for the port. Possibilities include: Auto, 100M/Full, 100M/Half, 10M/Full, or 10M/Half. If a Gigabit module is being used, 1000M/Full will be displayed in this field. Choosing Auto enables NWay auto-configuration on the port. ♦ Flow Ctrl Toggles flow control On or Off. It is useful during periods of heavy network activity when the Switch's buffers can receive too much traffic and fill up faster than the Switch can forward the information. In such cases, the Switch will intervene and tell the transmitting device to pause to allow the information in the port buffer to be sent. Confirm that Flow Control is in force by checking the Status field. ♦ Priority Selects Normal, High or Low. The Switch has two packet queues where incoming packets wait to be processed for forwarding; a high priority and low priority queue. The high priority queue should only be used for data in which latency can have adverse affects on the function of an application, such as video or audio data, where latency can produce distorted sounds and images. Packets in the low priority queue will not be processed unless the High priority queue is empty. Setting the port priority to High will deliver all packets arriving at the port to the high priority queue, a Low setting will send them all to the low priority queue. The Normal setting causes the port to examine the packet for an IEEE 802.1p/q priority tag. If no tag exists, the packet will be sent to the low priority queue. If the 56 Using the Console Interface

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Stackable NWay Ethernet Switch User’s Guide
56
Using the Console Interface
Figure 6-14.
Port Configuration screen
Items in the above window are defined as follows:
♦
Switch
Specifies the Switch where the port is being configured.
♦
Module
Specifies the module where the port is being configured.
♦
Port
Specifies the port that will be configured.
♦
Port Type
Specifies the speed and cable type of the selected port.
♦
State
Enables
or
Disables
the port. This amounts to turning the port on or off.
♦
Speed/Duplex
Selects the desired Speed and Duplex settings for the port. Possibilities include:
Auto
,
100M/Full
,
100M/Half
,
10M/Full
, or
10M/Half
. If a Gigabit module is being used,
1000M/Full
will
be displayed in this field. Choosing
Auto
enables NWay auto-configuration on the port.
♦
Flow Ctrl
Toggles flow control
On
or
Off
. It is useful during periods of heavy network activity when
the Switch’s buffers can receive too much traffic and fill up faster than the Switch can forward the
information. In such cases, the Switch will intervene and tell the transmitting device to pause to allow
the information in the port buffer to be sent. Confirm that Flow Control is in force by checking the
Status field.
♦
Priority
Selects
Normal
,
High
or
Low
. The Switch has two packet queues where incoming packets
wait to be processed for forwarding; a high priority and low priority queue. The high priority queue
should only be used for data in which latency can have adverse affects on the function of an application,
such as video or audio data, where latency can produce distorted sounds and images. Packets in the low
priority queue will not be processed unless the High priority queue is empty. Setting the port priority to
High
will deliver all packets arriving at the port to the high priority queue, a
Low
setting will send
them all to the low priority queue. The
Normal
setting causes the port to examine the packet for an
IEEE 802.1p/q priority tag. If no tag exists, the packet will be sent to the low priority queue. If the