H3C S5500-SI Series Operation Manual

Also see for S5500-SI Series: Configuration Operation manual Configuration guide Configuration guide Configuration guide

Operation Manual – VLANH3C S5500-SI Series Ethernet Switches Chapter 2 Voice VLAN Configuration2-2Note:z As the first 24 bits of a MAC address (in binary format), an OUI address is a globallyunique identifier assigned to a vendor by IEEE (Institute of Electrical and ElectronicsEngineers).z You can add or remove default OUI address manually.2.1.1 Voice VLAN Modes on a PortThere are two voice VLAN modes on a port: automatic and manual (the mode hererefers to the way of adding a port to a voice VLAN).z In automatic mode, the system identifies the source MAC address contained in theprotocol packets (untagged packets) sent when the IP phone is powered on andmatches it against the OUI addresses. If a match is found, the system willautomatically add the port into the Voice VLAN and apply ACL rules and configurethe packet precedence. An aging time can be configured for the voice VLAN. Thesystem will remove a port from the voice VLAN if no voice packet is received fromit after the aging time. The adding and removing of ports are automatically realizedby the system.z In manual mode, administrators add the IP phone access port to the voice VLANmanually. It then identifies the source MAC address contained in the packet,matches it against the OUI addresses. If a match is found, the system issues ACLrules and configures the precedence for the packets. In this mode, the operation ofadding ports to and removing ports from the voice VLAN are carried out by theadministrators.z Both modes forward tagged packets according to their tags.The following table lists the co-relation between the port voice VLAN mode, the voicetraffic type of an IP phone, and the port link type.