Operation Manual – Voice VLANH3C S3100-52P Ethernet Switch Chapter 1 Voice VLAN Configuration1-5Caution:z If the voice traffic transmitted by an IP voice device carries VLAN tags, and 802.1xauthentication and guest VLAN is enabled on the port which the IP voice device isconnected to, assign different VLAN IDs for the voice VLAN, the default VLAN of theport, and the 802.1x guest VLAN to ensure the effective operation of thesefunctions.z If the voice traffic transmitted by an IP voice device carries no VLAN tag, the defaultVLAN of the port which the IP voice device is connected to must be configured asthe voice VLAN. In this case, the 802.1x authentication is unavailable.1.1.5 Support for Voice VLAN on Various PortsVoice VLAN packets can be forwarded by access ports, trunk ports, and hybrid ports.You can enable a trunk or hybrid port belonging to other VLANs to forward voice andservice packets simultaneously by enabling the voice VLAN.For different types of IP phones, the support for voice VLAN varies with port types andport configuration. For IP phones capable of acquiring IP address and voice VLANautomatically, the support for voice VLAN is described in Table 1-2.
