Chapter 8 Basic Setting

 

Table 12 Basic Setting > Switch Setup (continued)

 

LABEL

DESCRIPTION

 

 

Smart

Select Active to enable smart isolation on the Switch. The designated

 

 

Isolation

port(s) then becomes the isolated port. Smart isolation allows you to

 

 

prevent isolated ports on different switches from transmitting traffic to

 

 

each other.

 

 

Note: To use smart isolation, you should have configured 802.1Q

 

 

VLAN port isolation or private VLAN and (M)RSTP on the

 

 

Switch. Smart isolation does not work with MSTP and/or port-

 

 

based VLAN.

 

 

 

 

 

MAC Address

MAC address learning reduces outgoing traffic broadcasts. For MAC

 

Learning

address learning to occur on a port, the port must be active.

 

 

 

 

 

Aging Time

Enter a time from 10 to 1000000 seconds. This is how long all

 

 

dynamically learned MAC addresses remain in the MAC address table

 

 

before they age out (and must be relearned).

 

 

 

 

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 Declarations are withdrawn by issuing a Leave message.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. See Chapter 9 on page 117 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 Chapter 9 on page 117 for more background

 

information.

 

 

Leave Timer

Leave Time 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

Leave All Timer sets the duration of the Leave All Period timer for GVRP in

Timer

milliseconds. Each port has a single Leave All Period timer. Leave All

 

Timer must be larger than Leave Timer.

 

 

Priority Queue Assignment

IEEE 802.1p defines up to eight 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 following fields to configure the priority level-to-physical queue mapping.

The Switch has eight 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 Level (The following descriptions are based on the traffic types defined in the IEEE 802.1d standard (which incorporates the 802.1p).

Level 7

Typically used for network control traffic such as router configuration

 

messages.

 

 

Level 6

Typically used for voice traffic that is especially sensitive to jitter (jitter is

 

the variations in delay).

 

 

Level 5

Typically used for video that consumes high bandwidth and is sensitive to

 

jitter.

 

 

 

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XGS-4526/4528F/4728F User’s Guide