3Com Switch 4800G 24-Port - Page 102

102 CHAPTER 10: VOICE VLAN CONFIGURATION
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■ Do not configure a VLAN as both a protocol-based VLAN and a voice VLAN.
Because a protocol-based VLAN requires that the inbound packets on the
Hybrid port are untagged packets (refer to section “Protocol-Based VLAN
Configuration” on page 92), whereas the Hybrid port working in auto voice
VLAN mode only supports to process tagged voice traffic.
■ The default VLAN of a port in automatic mode cannot be configured as the
voice VLAN. Otherwise, the system will prompt error information.
Configuring Voice VLAN
Mode on a Port to
Manual Mode
Follow these steps to set the port voice VLAN mode to manual:
Configure the aging time of
the voice VLAN
voice vlan aging minutes Optional
Only applicable to ports in
automatic mode and defaults
to 1,440 minutes
Enable the security mode for
the voice VLAN
voice vlan security enable Optional
Enabled by default
Configure the OUI address for
the voice VLAN
voice vlan mac-address oui
mask oui-mask [ description
text ]
Optional
By default, each voice VLAN
has default OUI addresses
configured. Refer to Table 23
for the default OUI addresses
of different vendors.
Enable the voice VLAN feature
globally
voice vlan vlan-id enable Required
Enter Ethernet port view interface interface-type
interface-number
-
Configure the port voice
VLAN mode as automatic
voice vlan mode auto Optional
Automatic mode by default
Different voice VLAN modes
can be configured on
different ports, independent
of one another.
Enable the voice VLAN feature
on the port
voice vlan enable Required
Not enabled by default
To do… Use the command… Remarks
To do… Use the command… Remarks
Enter system view system-view -
Enable the security mode of a
voice VLAN
voice vlan security enable Optional
Enabled by default
Configure the OUI address of a
voice VLAN
voice vlan mac-address oui
mask oui-mask [ description
text ]
Optional
By default, each voice VLAN
has default OUI addresses
configured. Refer to Table 23
for the default OUI addresses
of different vendors.
Enable the voice VLAN feature
globally
voice vlan vlan-id enable Required
Enter Ethernet port view interface interface-type
interface-number
-