MES53xx, MES33xx, MES23xx Ethernet Switch Series 102
Loopback status: no loopback
PDU revision: 3
Remote client
-------------
MAC address: a8:f9:4b:0c:00:03
Vendor(oui): a8 f9 4b
Administrative configurations:
PDU revision: 3
Mode: active
Unidirection: not supported
Link monitor: supported
Remote loopback: supported
MIB retrieval: not supported
Mtu size: 1500
console#
7.1 Voice VLAN
Voice VLAN allows allocating VoIP equipment into a separate VLAN. You can specify QoS attributes
of VoIP frames for traffic prioritization. VoIP equipment frame classification is based on the sender's OUI
(Organizationally Unique Identifier, the first 24 bits of the MAC address). Voice VLAN is automatically
assigned for a port when it receives a frame with OUI from the Voice VLAN table. When the port is
identified as a Voice VLAN port, this port is added to VLAN as a tagged port. Voice VLAN is used in the
following cases:
VoIP equipment is configured to send tagged packets with the Voice VLAN ID configured on
the switch.
VoIP equipment sends untagged DHCP requests. DHCP server reply contains Option 132
(VLAN ID) which allows the device to perform automatic VLAN assignment for traffic
marking (Voice VLAN).
The list of OUI of major VoIP equipment manufacturers.
Global configuration mode commands
Command line prompt in the global configuration mode is as follows:
console(config)#
Table 5.90. Global configuration mode commands
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