Operation Manual – Voice VLANH3C S5600 Series Ethernet Switches Chapter 1 Voice VLAN Configuration1-4The following table lists the five default OUI addresses on S5600 series switches.Table 1-1 Default OUI addresses pre-defined on the switchNumber OUI address Vendor1 0003-6b00-0000 Cisco phones2 000f-e200-0000 H3C Aolynk phones3 00d0-1e00-0000 Pingtel phones4 00e0-7500-0000 Polycom phones5 00e0-bb00-0000 3Com phones1.1.3 Setting the Voice Traffic Transmission PriorityIn order to improve transmission quality of voice traffic, the switch by default re-marksthe priority of the traffic in the voice VLAN as follows:z Set the CoS (802.1p) priority to 6.z Set the DSCP value to 46.1.1.4 Configuring Voice VLAN Assignment Mode of a PortA port can work in automatic voice VLAN assignment mode or manual voice VLANassignment mode. You can configure the voice VLAN assignment mode for a portaccording to data traffic passing through the port.I. Processing mode of untagged packets sent by IP voice devicesz Automatic voice VLAN assignment mode. An S5600 Ethernet switch automaticallyadds a port connecting an IP voice device to the voice VLAN by learning thesource MAC address in the untagged packet sent by the IP voice device when it ispowered on. The voice VLAN uses the aging mechanism to maintain the numberof ports in the voice VLAN. When the aging timer expires, the ports whose OUIaddresses are not updated (that is, no voice traffic passes) will be removed fromthe voice VLAN. In voice VLAN assignment automatic mode, ports can not beadded to or removed from a voice VLAN manually.z Manual voice VLAN assignment mode: In this mode, you need to add a port to avoice VLAN or remove a port from a voice VLAN manually.II. Processing mode of tagged packets sent by IP voice devicesTagged packets from IP voice devices are forwarded based on their tagged VLAN IDs,whether the automatic or manual voice VLAN assignment mode is used.
