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Dell PowerConnect 55xx Systems User Guide
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Maintenance Projects\Dell
Contax\sources\CxUGSwitching_VLAN.fm
D E LL C O N F ID E N T IA L – P R E L I M I N A RY 1 0 / 3 0/ 1 3 - F O R P R O O F O N LY
•
None
— Disables the selected port/LAG on the Voice VLAN. This
is the default.
•
Static
— Statically adds the port to the Voice VLAN. This is
usually done for VoIP uplink ports that connect the device to VoIP
PBX, for example.
•
Auto
— Indicates that if traffic with an IP phone MAC address is
transmitted on the port/LAG, the port/LAG joins the Voice
VLAN. The port/LAG is aged out of the voice VLAN if the IP
phone’s MAC address (with an OUI prefix) is aged out. If the
MAC address of the IP phones OUI was added manually to a
port/LAG in the voice VLAN, the user cannot add it to the Voice
VLAN in Auto mode, only in Static mode.
Voice VLAN Auto mode cannot be enabled on an interface if it is
already a static member of the defined Voice VLAN. This applies
also to VLAN/switchport interface modes (general, trunk and so
on) that are not currently active on a port. Therefore, before
setting Auto mode on an interface, you must specifically remove
the Voice VLAN ID for any switchport mode for that interface in
which it is a member. Special attention is needed in relation to
trunk mode configuration, because in this mode, interfaces are
members of all VLANs by default.
Use the Switching > VLAN > Port Settings screen to remove the
relevant VLAN.
–
Voice VLAN Security
— Enable/disable security on the interface.
Security ensures that packets arriving with an unrecognized OUI are
dropped (for example data packets).