ZyXEL Communications MSC1000G Series, Руководство пользователя

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Chapter 13 Switch Screens
Management Switch Card User’s Guide
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13.3 Link Aggregation ID
LACP aggregation ID consists of the following information
3
:
13.4 Queuing Overview
Queuing is used to help solve performance degradation when there is network congestion.
Queuing algorithms allow switches to maintain separate queues for packets from each individual
source or flow and prevent a source from monopolizing the bandwidth.
The switch has eight physical queues, Q0 to Q7. Q7 has the highest priority and Q0 has the lowest.
13.4.1 Strict Priority Queuing (SPQ)
Strict Priority Queuing (SPQ) services queues based on priority only. As traffic comes into the
switch, traffic on the highest priority queue, Q7 is transmitted first. When that queue empties,
traffic on the next highest-priority queue, Q6 is transmitted until Q6 empties, and then traffic is
transmitted on Q5 and so on. If higher priority queues never empty, then traffic on lower priority
queues never gets sent. SPQ does not automatically adapt to changing network requirements.
13.4.2 Weighted Round Robin Scheduling (WRR)
Round Robin Scheduling services queues on a rotating basis and is activated only when a port has
more traffic than it can handle. A queue is a given an amount of bandwidth irrespective of the
Table 267
Link Aggregation ID: Local Switch
SYSTEM PRIORITY MAC ADDRESS KEY PORT PRIORITY PORT NUMBER
0000 00-00-00-00-00 0000 00 0000
Table 268
Link Aggregation ID: Peer Switch
SYSTEM PRIORITY MAC ADDRESS KEY PORT PRIORITY PORT NUMBER
0000 00-00-00-00-00 0000 00 0000
3. Port Priority and Port Number are 0 as it is the aggregator ID for the trunk group, not the individual port.
Table 269
Physical Queue Priority
QUEUE PRIORITY
Q7 8 (Highest)
Q6 7
Q5 6
Q4 5
Q3 4
Q2 3
Q1 2
Q0 1 (Lowest)