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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
252
- None
The Voice VLAN feature is disabled on the port. The port will not
detect VoIP traffic nor be added to the Voice VLAN.
- Auto
The port will be added as a tagged member to the Voice VLAN
when VoIP traffic is detected on the port. You must select a
method for detecting VoIP traffic, either OUI or 802.1ab (LLDP).
When OUI is selected, be sure to configure the MAC address
ranges in the Telephony OUI list.
- Manual
The Voice VLAN feature is enabled on the port, but the port must
be manually added to the Voice VLAN.
Security
Enables security filtering that discards any non-VoIP packets received on the port
that are tagged with the voice VLAN ID. VoIP traffic is identified by source MAC
addresses configured in the Telephony OUI list, or through LLDP that discovers
VoIP devices attached to the switch. Packets received from non-VoIP sources
are dropped.
(Default: Disabled)
Selects a method to use for detecting VoIP traffic on the port.
(Default: OUI)
- OUI
Traffic from VoIP devices is detected by the Organizationally
Unique Identifier (OUI) of the source MAC address. OUI
numbers are assigned to manufacturers and form the first three
octets of a device MAC address. MAC address OUI numbers
must be configured in the Telephony OUI list so that the switch
recognizes the traffic as being from a VoIP device.
Discovery Protocol
- 802.1ab Uses LLDP to discover VoIP devices attached to the port. LLDP
checks that the “telephone bit” in the system capability TLV is
turned on. See “Link Layer Discovery Protocol” for more
information on LLDP.
Priority
Defines a CoS priority for port traffic on the Voice VLAN. The priority of any
received VoIP packet is overwritten with the new priority when the Voice VLAN
feature is active for a port.