Configuring Qos; Understanding Qos - D-Link DES-6500 User Manual

D-Link DES-6500 Layer 3 Stackable Gigabit Ethernet Switch
The following parameters can be set:
Parameter
Unit
From/To
Admin State
Max.Addr(0-64)
Mode

Configuring QoS

Understanding QoS

The DES-6500 supports 802.1p priority queuing. The switch has two priority queues. These
priority queues are labeled as 0, the high queue, and 6, the low queue. These priority queues,
specified in IEEE 802.1p are mapped to the switch's priority queues as follows:
• Priority 0 is assigned to the Switch's Q2 queue.
• Priority 1 is assigned to the Switch's Q0 queue.
• Priority 2 is assigned to the Switch's Q1 queue.
• Priority 3 is assigned to the Switch's Q3 queue.
• Priority 4 is assigned to the Switch's Q4 queue.
• Priority 5 is assigned to the Switch's Q5 queue.
• Priority 6 is assigned to the Switch's Q6 queue.
• Priority 7 is assigned to the Switch's Q6 queue.
For strict priority-based scheduling, any packets residing in the higher priority queues are
transmitted first. Only when these queues are empty, are packets of lower priority transmitted.
For weighted round-robin queuing, the number of packets sent from each priority queue
depends upon the assigned weight.
For a configuration of 8 CoS queues, A~H with their respective weight value: 8~1, the
packets are sent in the following sequence: A1, B1, C1, D1, E1, F1, G1, H1, A2, B2, C2, D2,
E2, F2, G2, A3, B3, C3, D3, E3, F3, A4, B4, C4, D4, E4, A5, B5, C5, D5, A6, B6, C6, A7,
B7, A8, A1, B1, C1, D1, E1, F1, G1, H1.
For weighted round-robin queuing, if each CoS queue has the same weight value, then each
CoS queue has an equal opportunity to send packets just like round-robin queuing.
Description
Allows you to specify a switch in a switch stack using that switch's Unit ID.
A consecutive group of ports may be configured starting with the selected
port.
This pull-down menu allows you to Enable or Disable Port Security
(locked MAC address table for the selected ports.)
The number of MAC addresses that will be in the MAC address forwarding
table for the selected switch and group of ports.
This pull-down menu allows you to select how the MAC address table
locking will be implemented on the switch, for the selected group of ports.
The options are DeleteOnReset and DeleteOnTimeout.
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