128
IP phones connected in series access the network through the device and ports on the device
simultaneously transmit both voice traffic and data traffic, as shown in
. When the
voice VLAN works normally, if the system reboots, 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. In this case, voice traffic streams do not trigger port assignment
to the voice VLAN.
Figure 132 PCs and IP phones connected in series access the network
•
Manual
mode
—You must assign the port to a voice VLAN manually. Then, the system matches
the source MAC addresses in the packets against the OUI addresses. If a match is found, the
system 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
. In this mode, ports assigned to a
voice VLAN transmit voice traffic exclusively, which prevents the impact of data traffic on the
transmission of voice traffic.
Figure 133 Only IP phones access the network
Both modes forward tagged packets according to their tags.
list the configurations required for ports of different link types to support
tagged or untagged voice traffic sent from IP phones when different voice VLAN assignment modes
are configured.
•
IP phones send tagged voice traffic
Table 52 Required configurations on ports of different link types for them to support
tagged voice traffic
Port link
type
Voice VLAN assignment
mode supported for tagged
voice traffic
Configuration requirements
Access Manual
Configure
the
PVID
of the port as the voice VLAN.
Trunk Automatic
and
manual
In automatic mode, the PVID of the port cannot
be the voice VLAN.
In manual mode, configure the port to permit
packets of the voice VLAN to pass through.
Summary of Contents for FlexNetwork NJ5000
Page 12: ...x Index 440 ...
Page 39: ...27 Figure 16 Configuration complete ...
Page 67: ...55 Figure 47 Displaying the speed settings of ports ...
Page 78: ...66 Figure 59 Loopback test result ...
Page 158: ...146 Figure 156 Creating a static MAC address entry ...
Page 183: ...171 Figure 171 Configuring MSTP globally on Switch D ...
Page 243: ...231 Figure 237 IPv6 active route table ...