ZyXEL Communications MSC1000G Series, Руководство пользователя

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Chapter 13 Switch Screens
Management Switch Card User’s Guide
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incoming traffic on that port. This queue then moves to the back of the list. The next queue is given
an equal amount of bandwidth, and then moves to the end of the list; and so on, depending on the
number of queues being used. This works in a looping fashion until a queue is empty.
Weighted Round Robin Scheduling (WRR) uses the same algorithm as round robin scheduling, but
services queues based on their priority and queue weight (the number you configure in the queue
weight fields) rather than a fixed amount of bandwidth. WRR is activated only when a port has
more traffic than it can handle. Queues with larger weights get more service than queues with
smaller weights. This queuing mechanism is highly efficient in that it divides any available
bandwidth across the different traffic queues and returns to queues that have not yet emptied.
13.5 Switch Setup General Screen
Click Switch > Switch Setup in the navigation panel to display the screen as shown.
Figure 350
Switch Setup General
The following table describes the labels in this screen.
Table 270
Switch Setup General
LABEL DESCRIPTION
GARP Timer:
Switches join VLANs by making a declaration. A declaration is made by issuing a Join message using GARP.
Declarations are withdrawn by issuing a Leave message. A Leave All message terminates all registrations.
GARP timers set declaration timeout values.
Refer to Chapter 15 on page 591 for more background information.
Join Timer Join Timer sets the duration of the Join Period timer for GVRP in milliseconds. Each port has
a Join Period timer. The allowed Join Time range is between 100 and 65535 milliseconds;
the default is 200 milliseconds. See the chapter on VLAN setup for more background
information.
Leave Timer Leave Timer sets the duration of the Leave Period timer for GVRP in milliseconds. Each port
has a single Leave Period timer. Leave Time must be two times larger than Join Timer; the
default is 600 milliseconds.