HP 6600 Configuration Manual page 129

automatically assigns the receiving port to the voice VLAN, issues ACL rules, and configures the
packet precedence. You can configure a voice VLAN aging time on the device. The system will
remove a port from the voice VLAN if no packets are received from the port during the aging time.
The system automatically assigns ports to, or removes ports from, a voice VLAN. Automatic mode
is suitable for scenarios where PCs and IP phones connected in series access the network through
the device, and ports on the device transmit both voice traffic and data traffic at the same time, as
shown in Figure 40. When the voice VLAN works correctly, if the system reboots, the system
reassigns ports in automatic voice VLAN assignment mode to the voice VLAN after reboot, making
sure existing voice connections can work correctly. In this case, voice traffic streams do not trigger
port assignment to the voice VLAN.
Figure 40 PCs and IP phones connected in series access the network
Manual mode—You must manually assign an IP phone accessing port to a voice VLAN. Then, the
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system matches the source MAC addresses carried in packets against the device's OUI addresses.
If the system finds a match, it issues ACL rules and configures the packet precedence. In this mode,
you must manually assign ports to, or remove ports from, a voice VLAN. Manual mode is suitable
for scenarios where only IP phones access the network through the device, and ports on the device
transmit only voice traffic, as shown in
transmit voice traffic exclusively, which prevents data traffic from impacting the transmission of voice
traffic.
Figure 41 Only IP phones access the network
Both modes forward tagged packets according to their tags.
Table 14 and Table 15
or untagged voice traffic sent from IP phones when different voice VLAN assignment modes are
configured.
When IP phones send tagged voice traffic
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If an IP phone sends tagged voice traffic and its accessing port is configured with 802.1X
authentication and a guest VLAN, Auth-Fail VLAN, or critical VLAN, assign different VLAN IDs for
the voice VLAN, the PVID of the accessing port, and the 802.1X guest VLAN, Auth-Fail VLAN, or
critical VLAN.
Figure
list the configurations required for ports of different link types to support tagged
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41. In this mode, ports assigned to a voice VLAN