User`s guide

D-Link DGS-3324SR Layer 3 Stackable Gigabit Ethernet Switch
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Max.Addr(0-64)
The number of MAC addresses that will be in the MAC address forwarding
table for the selected switch and group of ports.
Mode
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.
Configuring QoS
Understanding QoS
The DGS-3324SR supports 802.1p priority queuing. The Switch has seven priority queues. These priority queues
are labeled as 6, the high queue to 0, the lowest queue. The eight priority tags, specified in IEEE 802.1p are
mapped to the Switch’s priority tags 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.
Multiple strict priority queues empty based on their priority tags. 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.
For weighted round-robin queuing, if the weight for a CoS is set to 0, then it will continue processing the packets
from this CoS until there are no more packets for this CoS. The other CoS queues that have been given a nonzero
value, and depending upon the weight, will follow a common weighted round-robin scheme.
Remember that the DGS-3324SR has 8 priority queues (and eight Classes of Service) for each port on the
Switch.
Setting Bandwidth Control
The bandwidth control settings are used to place a ceiling on the transmitting and receiving data rates for any
selected port. In the Configuration folder open the QoS folder and click Bandwidth Control, to view the screen
shown below.