ZyXEL Communications MSC1024G Series User Manual page 476

Chapter 15 Switch Screens
The following table describes the labels in this screen.
Table 242 Switch Setup General
LABEL
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 Declarations are withdrawn by issuing a Leave message.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 17 on page 531
Join Timer
Leave Timer
Leave All Timer
Priority Queue Assignment
IEEE 802.1p defines up to 8 separate traffic types by inserting a tag into a MAC-layer frame that
contains bits to define class of service. Frames without an explicit priority tag are given the default
priority of the ingress port. Use the drop-down list boxes to configure the priority level-to-physical
queue mapping.
The system has 8 physical queues that you can map to the 8 priority levels. On the switch, traffic
assigned to higher index queues gets through faster while traffic in lower index queues is dropped if the
network is congested.
Priority Levels (The following descriptions are based on the traffic types defined in the IEEE 802.1d
standard (which incorporates IEEE 802.1p).
Priority 7
Priority 6
Priority 5
Priority 4
Priority 3
Priority 2
Priority 1
Priority 0
Aging Time
Apply
Cancel
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DESCRIPTION
for more background information.
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 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.
Leave All Timer sets the duration of the Leave All Period timer for GVRP in
milliseconds. Each port has a single Leave All Period timer. Leave All Timer must
be larger than Leave Timer; the default is 1000 milliseconds.
Typically used for network control traffic such as router configuration messages.
Typically used for voice traffic that is especially sensitive to jitter (jitter is the
variations in delay).
Typically used for video that consumes high bandwidth and is sensitive to jitter.
Typically used for controlled load, latency-sensitive traffic such as SNA (Systems
Network Architecture) transactions.
Typically used for "excellent effort" or better than best effort and would include
important business traffic that can tolerate some delay.
This is for "spare bandwidth".
This is typically used for non-critical "background" traffic such as bulk transfers
that are allowed but that should not affect other applications and users.
Typically used for best-effort traffic.
Enter a time from 10 to 10,000 seconds. This is how long all dynamically learned
MAC addresses remain in the MAC address table before they age out (and must
be relearned). Enter 0 to disable the aging out of MAC addresses.
This setting applies to both the MSC and any installed ELCs.
Click Apply to save the changes in this screen to the system's volatile memory.
The system loses these changes if it is turned off or loses power, so use the
Config Save on the navigation panel and then the Save button to save your
changes to the non-volatile memory when you are done configuring.
Click Cancel to begin configuring this screen afresh.
MSC1000G/1024G/1224G Series User's Guide