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Applicable Scenario
Figure 9-5 shows PCs and IP phones connecting to the Internet through switches. Because the voice service is sensitive to delay and jitter, the priority of voice data flows needs to be increased so that they can be preferentially forwarded when congestion occurs.
Configure a voice VLAN based on the type of voice packets
sent by IP phones:
- Configure MAC address-based voice VLAN when voice packets are untagged or tagged with VLAN 0.
- Configure VLAN ID-based voice VLAN when IP phones can obtain voice VLAN information on the switch.