3Com SuperStack 4 Configuration Manual page 59

There are four default OUI addresses after the system starts.
Table 62 Default OUI Addresses
No. OUI
1 00:E0:BB
2 00:03:6B
3 00:E0:75
4 00:D0:1E
Enabling/Disabling Voice VLAN Security Mode
In security mode, the system can filter out the traffic whose source MAC is not OUI
within the Voice VLAN, while the other VLANs are not influenced. If security mode
is disabled, the system cannot filter anything.
Perform the following configuration in System View.
Table 63 Configuring the Voice VLAN Security Mode
Operation
Enable Voice VLAN security mode
Disable Voice VLAN security mode
By default, the Voice VLAN security mode is enabled.
Enabling/Disabling Voice VLAN Auto Mode
In auto mode, if you enable Voice VLAN features on a port and there is IP Phone
traffic through the port, the system automatically adds the port to the Voice VLAN.
But in manual mode, you have to perform the above operation manually.
Perform the following configuration in System View.
Table 64 Configuring Voice VLAN Auto Mode
Operation
Enable Voice VLAN auto mode
Disable Voice VLAN auto mode (that is, to enable
manual mode)
By default, Voice VLAN auto mode is enabled.
Setting the Aging Time of Voice VLAN
In auto mode, using the follow command, you can set the aging time of Voice
VLAN. After the OUI address, the MAC address of IP Phone, is aged on the port,
this port enters the aging phase of Voice VLAN. If OUI address is not learned by a
port within the aging time, the port is automatically deleted from Voice VLAN. This
command does not operate in manual mode.
Voice VLAN Configuration
Description
3Com phone
Cisco phone
Polycom phone
Pingtel phone
Command
voice vlan security enable
undo voice vlan security enable
Command
voice vlan mode auto
undo voice vlan mode auto
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