R3303-HP HSR6800 Routers Layer 2 - LAN Switching Configuration Guide

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Figure 42 PCs and IP phones connected in series access the network
• Manual mode—You must manually assign an IP phone accessing port to a voice VLAN. Then, the
system matches the source MAC addresses carried in packets against the device's OUI addresses.
If the system finds a match, it 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 Figure 43. In this mode
, ports assigned to a voice VLAN
transmit voice traffic exclusively, which prevents data traffic from impacting the transmission of voice
traffic.
Figure 43 Only IP phones access the network
Both modes forward tagged packets according to their tags.
Table 14 and Table 15 list t
he 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.
• When IP phones send tagged voice traffic
If an IP phone sends tagged voice traffic and its accessing port is configured with 802.1X
authentication and a guest VLAN, Auth-Fail VLAN, or critical VLAN, assign different VLAN IDs for
the voice VLAN, the PVID of the accessing port, and the 802.1X guest VLAN, Auth-Fail VLAN, or
critical VLAN.
Table 14 Required configurations on ports of different link types for them to support tagged voice traffic
Port link type
Voice VLAN assignment mode
su
pp
orted for ta
gg
ed voice traffic
Configuration requirements
Access N/A N/A
Trunk Automatic and manual
In automatic mode, the PVID of the port cannot be
the voice VLAN.
In manual mode, the PVID of the port cannot be the
voice VLAN. Configure the port to permit packets
from the voice VLAN to pass through.