R2511-HP MSR Router Series Layer 2 - LAN Switching Configuration Guide(V5)

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Figure 9 Only IP phones access the network
Both modes forward tagged packets according to their tags.
Table 2 and Table 3 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.
• 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 2 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 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.
Hybrid 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
tagged.
• When IP phones send untagged voice traffic
When IP phones send untagged voice traffic, you can only configure the voice traffic receiving
ports on the device to operate in manual voice VLAN assignment mode.
If an IP phone sends untagged voice traffic, to implement the voice VLAN feature, you must
configure the PVID of the IP phone's accessing port as the voice VLAN. As a result, you cannot
implement 802.1X authentication.