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| Chapter 8 Basic Setting | |
| Table 12 Basic Setting > Switch Setup (continued) | ||
| LABEL | DESCRIPTION |
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| Smart | Select Active to enable smart isolation on the Switch. The designated |
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| Isolation | port(s) then becomes the isolated port. Smart isolation allows you to | |
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| prevent isolated ports on different switches from transmitting traffic to | |
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| each other. | |
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| Note: To use smart isolation, you should have configured 802.1Q | |
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| VLAN port isolation or private VLAN and (M)RSTP on the | |
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| Switch. Smart isolation does not work with MSTP and/or port- | |
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| based VLAN. | |
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| MAC Address | MAC address learning reduces outgoing traffic broadcasts. For MAC | |
| Learning | address learning to occur on a port, the port must be active. | |
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| Aging Time | Enter a time from 10 to 1000000 seconds. This is how long all | |
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| dynamically learned MAC addresses remain in the MAC address table | |
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| before they age out (and must be relearned). | |
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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 Declarations are withdrawn by issuing a Leave message.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. |
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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. |
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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. |
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Priority Queue Assignment
IEEE 802.1p defines up to eight separate traffic types by inserting a tag into a
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. |
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Level 6 | Typically used for voice traffic that is especially sensitive to jitter (jitter is |
| the variations in delay). |
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Level 5 | Typically used for video that consumes high bandwidth and is sensitive to |
| jitter. |
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| 109 |
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