KTI KS-2300, User Manual

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performance guarantees are required. The SP traffic should be either
policed or implicitly bounded (e.g. if the traffic of the queue with SP is very
light and predictable patterned).
2. Delay Bound : It is a delay assurance algorithm of the switch. It can
dynamically adjusts its scheduling and dropping criteria, guide by the
queue occupancies and the due dates of their head-of-line(HOL) frames.
As a result, we assure latency bounds for all admitted frames with high
confidence.
3. Weighted Fair Queuing (WFQ) : You can weight the priority queues for
different transmit bandwidth allocation for these queues. In WFQ mode,
we do not assure frame latency as delay bound.
4. Best Effort (BE) : In BE mode, a queue only receives bandwidth when
none of the other classes have any traffic to offer. It is used for non-
essential traffic because we provide no assurances about BE
performance.
This switch supports four scheduling configurations for each physical port
on different priority queues (4 priority queues on 10/100M ports, 8 priority
queues on gigabit port for 24+2G models).
10/100M Port P3 P2 P1 P0
Gigabit Port P7 P6 P5 P4 P3 P2 P1 P0
Option 1 Delay Bound Best Effort
Option 2 Strict Priority Delay Bound Best Effort
Option 3 Strict Priority Weighted Fair Queuing
Option 4 Weighted Fair Queuing
There are 10 profiles in the configuration menu. The following is the mapping
between the 10 profiles and the four scheduling configurations.
Strict Priority Delay Bound WFQ Setting (default)
Profile 1 Disable Enable 50%, 25%, 25%, 0% Option 1
Profile 2 Enable Enable 50%, 25%, 25%, 0% Option 2
Profile 3 Enable Disable 50%, 25%, 12.5%, 12.5% Option 3
Profile 4 Disable Disable 50%, 25%, 12.5%, 12.5% Option 4
Profile 5 Disable Enable 75%, 12.5%, 12.5%, 0% Option 1
Profile 6 Enable Enable 75%, 12.5%, 12.5%, 0% Option 2
Profile 7 Enable Disable 75%, 12.5%, 6.25%, 6.25% Option 3
Profile 8 Disable Disable 75%, 12.5%, 6.25%, 6.25% Option 4
Profile 9 Enable Enable 25%, 50%, 25%, 0% Option 2