H3C S3100 Series Command Manual page 134

Description
Use the voice vlan security enable command to enable the voice VLAN security mode.
Use the undo voice vlan security enable command to disable the voice VLAN security mode.
In security mode, the ports in a voice VLAN and with voice devices attached to can only forward voice
data. Data packets with their MAC addresses not among the OUI addresses that can be identified by
the system will be filtered out. This mode has no effects on other VLANs.
By default, the voice VLAN security mode is enabled.
Related commands: display voice vlan status.
Examples
# Disable the voice VLAN security mode.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] undo voice vlan security enable
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