Switch Setup Dot3Ad Screen - ZyXEL Communications MSC1000G User Manual

Chapter 13 Switch Screens
Table 270 Switch Setup General (continued)
LABEL
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

13.6 Switch Setup Dot3ad Screen

Click Switch > Switch Setup > Dot3ad to display the screen as shown.
516
DESCRIPTION
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 link 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.
Management Switch Card User's Guide