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TRENDnet User's Guide
2. Click on Network, click on MLD Snooping, and click on Router Settings.
3. Select the VLAN ID to configure
4. Review the settings. Click Check Mark to save the settings.
Click the Static Port List and select the ports you would like to statically assign
•
•
Click the Forbidding Port List and select the ports you would like to assign to
the Forbidden List
Loopback Detection
Global Settings
Network > Loopback Detection > Global Settings
1. Log into your switch management page (see
on page 9).
2. Click on Network, click on Loopback Detection, and click on Global Settings.
3. Select Enabled to enable loopback detection, or Disabled to disable this feature
4. At the top right panel, click the Apply button to save the changes to the Flash.
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"Access your switch management
page"
Note: This step saves all configuration changes to the NV-RAM to ensure that if the
switch is rebooted or power cycled, the configuration changes will still be applied
Voice VLAN
This chapter contains a description of the Switch's Voice VLAN feature and the
procedures to create, modify, and delete a voice VLAN configuration.
The Voice VLAN feature is specifically designed to maintain high quality, uninterrupted
voice traffic through the switch. When talking on a voice over IP phone, a user expects
to have no interruptions in the conversation and excellent voice quality. The Voice VLAN
feature can be configured to meet these requirements.
CoS with Voice VLAN
The Voice VLAN CoS parameter maintains the voice quality between the ingress and
egress ports of the switch. CoS must be enabled for the Voice VLAN CoS priority to take
effect. The CoS priority level that you config is applied to voice traffic on all ports of the
voice VLAN. Normally, most (non-Voice) Ethernet traffic transverses the switch through
lower order egress queues. To avoid delays and interruptions in the voice data flow, the
CoS priority level assigned to the voice VLAN should be mapped to a higher order queue
and the scheduling algorithm should be set to Strict Priority. These settings ensure that
the voice data packets are processed before other types of data so that the voice quality
is maintained as the voice data passes through the switch.
Organization Unique Identifier (OUI)
Each IP phone manufacturer can be identified by one or more Organization Unique
Identifiers (OUIs). An OUI is three bytes long and is usually expressed in hexadecimal
format. It is imbedded into the first part of each MAC address of an Ethernet network
device. You can find the OUI of an IP phone in the first three complete bytes of its MAC
address.
Typically, you will find that all of the IP phones you are installing have the same OUI in
common. The switch identifies a voice data packet by comparing the OUI information in
the packet's source MAC address with an OUI table that you configure when you initially
set up the voice VLAN. This is important when the Auto-Detection feature for a port and
is a dynamic voice VLAN port.
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