Creating Vlans In Batches; Voice Vlan Configuration - 3Com 5500-SI Configuration Manual

Creating VLANs in
Batches
Voice VLAN
Configuration
To improve efficiency, you can create VLANs in batches by performing the operations
listed in Table 98.
Table 98
Create VLANs in batches
Operation
Enter system view
Create VLANs by specifying a
VLAN ID range
Voice VLANs are VLANs configured specially for voice data stream. By adding the
ports with voice devices attached to voice VLANs, you can perform QoS-related
configuration for voice data, ensuring the transmission priority of voice data stream
and voice quality.
S5500 series Ethernet switches determine whether a received packet is a voice packet
by checking its source MAC address. Voice packets can also be identified by
organizationally unique identifier (OUI) addresses. You can also configure an OUI
address for a voice packet or specify to use the default OUI address.
An OUI address is a globally unique identifier assigned to a vendor by IEEE. It forms
the first 24 bits of a MAC address.
A voice VLAN can operate in two modes: automatic mode and manual mode. You
can configure the operation mode for a voice VLAN according to data stream passing
through the ports of the voice VLAN.
When a voice VLAN operates in the automatic mode, the switch learns source
■
MAC addresses from untagged packets sent by IP phones (an IP phone sends
untagged packets when powered on) and adds the port with the IP phones
attached to the voice VLAN. A port in a voice VLAN ages if the corresponding OUI
address is not updated when the aging time expires.
When a voice VLAN operates in the manual mode, you need to execute related
■
commands to add a port to the voice VLAN or remove a port from the voice VLAN.
As for tagged packets sent by IP phones, a switch only forwards them (rather than
learns the MAS addresses) regardless of the voice VLAN operation mode.
Voice VLAN packets can be forwarded by trunk ports and hybrid ports. You can
enable a trunk port or a hybrid port to forward voice and service packets
simultaneously by enabling the voice VLAN function for it.
Command
system-view
vlan { vlan-id1 to vlan-id2 | all }

Creating VLANs in Batches 107

Description
-
Required