Netgear XSM4324FS Software Administration Manual Software Version 12.x - Page 44

M4300 Series and M4300-96X Fully Managed Switches e. Click Apply. 3. Associate the IP subnet with VLAN 2000. a. Select Switching > VLAN > Advanced > IP Subnet Based VLAN. A screen similar to the following displays. b. Enter the following information: • In the IP Address field, enter 10.100.0.0. • In the Subnet Mask field, enter 255.255.0.0. • In the VLAN (1 to 4093) field, enter 2000. c. Click Add. Voice VLANs The voice VLAN feature enables switch ports to carry voice traffic with defined priority to enable separation of voice and data traffic coming onto port. Voice VLAN ensures that the sound quality of an IP phone does not deteriorate when the data traffic on the port is high. Also, the inherent isolation provided by VLANs ensures that inter-VLAN traffic is under management control and that clients attached to the network cannot initiate a direct attack on voice components. The switch can be configured to support voice VLAN on a port connecting to a VoIP phone. When a VLAN is associated with the voice VLAN port, then the VLAN ID info is passed onto the VoIP phone using the LLDP-MED mechanism. The voice data coming from the VoIP phone is tagged with the exchanged VLAN ID; thus, regular data arriving on the switch is given the default PVID of the port, and the voice traffic is received on a predefined VLAN. The two types of traffic are therefore segregated so that better service can be provided to the voice traffic. When a dot1p priority is associated with the voice VLAN port instead of VLAN ID, then the priority info is passed onto the VoIP phone using the LLDP-MED mechanism. Thus, the voice data coming from the VoIP phone is tagged with VLAN 0 and with the exchanged priority. VLANs 44 Software Administration Manual