Voice Vlan Assignment Modes - HP A6600 Configuration Manual

Voice VLAN assignment modes

CAUTION:
• If an IP phone sends tagged voice traffic and its accessing port is configured with 802.1X authentication
and guest VLAN, you should assign different VLAN IDs for the voice VLAN, the default VLAN of the
connecting port, and the 802.1X guest VLAN.
If an IP phone sends untagged voice traffic, to implement the voice VLAN feature, you must configure the
•
default VLAN of the IP phone's accessing port as the voice VLAN. As a result, 802.1X authentication
cannot be implemented.
A port can be assigned to a voice VLAN in one of the following modes:
In automatic mode, the system matches the source MAC address carried in the untagged packets
•
sent when an IP phone is powered on against the router's OUI addresses. If a match is found, the
system automatically assigns the receiving port to the voice VLAN, issues ACL rules and configures
the packet precedence.
Configure voice VLAN aging time on the router. The system removes a port from the voice VLAN if
no packet is received from the port during the aging time. Assigning/removing ports to/from a
voice VLAN are automatically performed by the system. The automatic mode is suitable for
scenarios where PCs and IP phones connected in series access the network through the router and
ports on the router transmit both voice traffic and data traffic at the same time, as shown in
39.
When the voice VLAN works normally, in case of a system reboot, the system reassigns ports in
automatic voice VLAN assignment mode to the voice VLAN after the reboot, ensuring that existing
voice connections can work normally. Port assignment to the voice VLAN is not triggered by voice
traffic streams.
Figure 39 PCs and IP phones connected in series access the network
In manual mode, you need to manually assign an IP phone accessing port to a voice VLAN. Then,
•
the system matches the source MAC addresses carried in the packets against the router's OUI
addresses. If a match is found, the system issues ACL rules and configures the packet precedence.
In this mode, assigning/removing ports to/from a voice VLAN are performed manually. The manual
mode is suitable for scenarios where only IP phones access the network through the router and ports
on the router only transmit voice traffic, as shown in
voice VLAN transmit voice traffic exclusively, which prevents the impact of data traffic on the
transmission of voice traffic.
Figure 40. In this mode, ports assigned to a
120
Figure