Allied Telesis AT-GS950/16PS, AT-S112 manual Dynamic Auto Detection vs Static Ports

Dynamic Auto-

Detection vs

Static Ports

AT-GS950/16PS Switch Web Interface User’s Guide

When you are configuring the voice VLAN parameters, you must enter the complete MAC address of at least one of your IP phones. An “OUI Mask” is automatically generated and applied by the AT-S112 management software to yield the manufacturer’s OUI. If the OUI of the remaining phones from that manufacturer is the same, then no other IP phone MAC addresses need to be entered into the configuration.

However, it is possible that you can find more than one OUI from the same manufacturer among the IP phones you are installing. It is also possible that your IP phones are from two or more different manufacturers in which case you will find different OUIs for each manufacturer. If you identify more than one OUI among the IP phones being installed, then one MAC address representing each individual OUI must be configured in the voice VLAN. You can enter a total of 10 OUIs.

Prior to configuring the voice VLAN, you must configure a tagged VLAN which is the basis for the voice VLAN configuration. The VLAN must be configured with one or more tagged or untagged ports that will serve as the voice VLAN uplink/downlink. By default, a tagged or untagged port is a static member of a tagged VLAN.

Note

See “Create a Tagged VLAN” on page 157 for more information about configuring a tagged VLAN with “Not Member” and Static ports.

The ports that you choose to configure as dynamic Auto-Detection ports must be connected directly to an IP phone. When you initially define the ports of a tagged VLAN for your voice VLAN configuration, they must be configured as a “Not Member” ports. The “Not Member” ports are eligible to dynamically join the voice VLAN when voice data is detected with a pre- defined OUI in the source MAC address. The port will leave the voice VLAN after a specified timeout period. This port behavior is configured with the voice VLAN Auto-Detection feature.

Note

See “Organization Unique Identifier (OUI)” on page 258 for more information concerning OUIs.

For the Auto-Detection feature to function, your IP phone(s) must be capable of generating 802.1Q packets with imbedded VLAN ID tags. You must manually configure your IP phone(s) for the same VLAN ID as the AT-GS950/16PS switch’s voice VLAN ID. When voice data is detected on one of the “Not Member” ports, the packets from the IP phone will contain the voice VLAN ID so they are switched within the AT-GS950/16PS switch’s voice VLAN.

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