Operation Manual – Voice VLAN
H3C S3100 Series Ethernet Switches Chapter 1 Voice VLAN Configuration
1-5
the voice VLAN. In voice VLAN assignment automatic mode, ports can not be
added to or removed from a voice VLAN manually.
z Manual voice VLAN assignment mode: In this mode, you need to add a port to a
voice VLAN or remove a port from a voice VLAN manually.
II. Processing mode of tagged packets sent by IP voice devices
Tagged packets from IP voice devices are forwarded based on their tagged VLAN IDs,
whether the automatic or manual voice VLAN assignment mode is used.
Caution:
If the voice traffic transmitted by an IP voice device carries VLAN tags, and 802.1x
authentication and guest VLAN is enabled on the port which the IP voice device is
connected to, assign different VLAN IDs for the voice VLAN, the default VLAN of the
port, and the 802.1x guest VLAN to ensure the effective operation of these functions.
1.1.5 Support for Voice VLAN on Various Ports
Voice VLAN packets can be forwarded by access ports, trunk ports, and hybrid ports.
You can enable a trunk or hybrid port belonging to other VLANs to forward voice and
service packets simultaneously by enabling the voice VLAN.
For different types of IP phones, the support for voice VLAN varies with port types and
port configuration. For IP phones capable of acquiring IP address and voice VLAN
automatically, the support for voice VLAN is described in
Table 1-2.
Table 1-2 Matching relationship between port types and voice devices capable of
acquiring IP address and voice VLAN automatically
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