Operation Manual – Voice VLAN
H3C S3100 Series Ethernet Switches Chapter 1 Voice VLAN Configuration
1-11
Caution:
z The voice VLAN function can be enabled for only one VLAN at one time.
z If the Link Aggregation Control Protocol (LACP) is enabled on a port, voice VLAN
feature cannot be enabled on it.
z Voice VLAN function can be enabled only for the static VLAN. A dynamic VLAN
cannot be configured as a voice VLAN.
z When ACL number applied to a port reaches to its threshold, voice VLAN cannot be
enabled on this port. You can use the display voice vlan error-info command to
locate such ports.
z When a voice VLAN operates in security mode, the device in it permits only the
packets whose source addresses are the identified voice OUI addresses. Packets
whose source addresses cannot be identified, including certain authentication
packets (such as 802.1x authentication packets), will be dropped. Therefore, you
are suggested not to transmit both voice data and service data in a voice VLAN. If
you have to do so, make sure that the voice VLAN does not operate in security
mode.
z The voice VLAN legacy feature realizes the communication between H3C device
and other vendor's voice device by automatically adding the voice VLAN tag to the
voice data coming from other vendors’ voice device. The voice vlan legacy
command can be executed before voice VLAN is enabled globally and on a port, but
it takes effect only after voice VLAN is enabled globally and on the port.
z When an S3100-C-EPON-EI switch works as an ONU device in the EPON system,
the voice VLAN function may not run properly. Therefore, it is not recommended to
use the voice VLAN function in the EPON system.
 Note:
To assign a trunk port or a hybrid port to the voice VLAN, refer to VLAN Configurations
of this manual for the related command.
1.3 Displaying and Maintaining Voice VLAN
To do… Use the command… Remarks
Display information about the ports on which
voice VLAN configuration fails
display voice vlan
error-info
Display the voice VLAN configuration status
display voice vlan
status
Display the OUI list
display voice vlan oui
In any
view
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