Example for Configuring a VLAN ID-based Voice VLAN (IP Phones Send Tagged Voice Packets)
Networking Requirements
As shown in Figure 9-7, the switch connects to IP phones and a PC. The switch uses VLAN 2 to transmit voice packets and VLAN 3 to transmit data packets. PC A connects to IP phone A and they connect to the switch, and IP phone B separately connects to the switch. IP phones can obtain voice VLAN information through LLDP and send tagged voice packets. Users require high quality of the VoIP service; therefore, voice data flows must be transmitted with a high priority to ensure the call quality. In addition, the administrator manages many IP phones and requires simplified configurations.
Configuration Roadmap
- Create VLANs on the switch and add interfaces to VLANs to implement Layer 2 connectivity.
- Enable LLDP so that IP phones can obtain voice VLAN information through LLDP.
- Configure VLAN 2 as the voice VLAN and configure the interface to allow voice packets to pass through. Configure a VLAN ID-based voice VLAN, which relieves you from configuring OUIs.
Procedure
- Configure VLANs and interfaces on the Switch.
# Create VLANs.
<HUAWEI> system-view [HUAWEI] sysname Switch [Switch] vlan batch 2 3
# Configure VLANs allowed by GE1/0/1.
[Switch] interface gigabitethernet 1/0/1 [Switch-GigabitEthernet1/0/1] port link-type hybrid [Switch-GigabitEthernet1/0/1] port hybrid pvid vlan 3 [Switch-GigabitEthernet1/0/1] port hybrid untagged vlan 3 [Switch-GigabitEthernet1/0/1] port hybrid tagged vlan 2 [Switch-GigabitEthernet1/0/1] quit [Switch] interface gigabitethernet 1/0/2 [Switch-GigabitEthernet1/0/2] port link-type hybrid [Switch-GigabitEthernet1/0/2] port hybrid tagged vlan 2 [Switch-GigabitEthernet1/0/2] quit
- Enable LLDP.
[Switch] lldp enable
- # Enable the voice VLAN function on GE1/0/1. The configuration of GE1/0/2 is similar to the configuration of GE1/0/1, and is not
mentioned here.
[Switch] interface gigabitethernet 1/0/1 [Switch-GigabitEthernet1/0/1] voice-vlan 2 enable [Switch-GigabitEthernet1/0/1] voice-vlan remark-mode vlan [Switch-GigabitEthernet1/0/1] quit
- Verify the configuration.
Run the display voice-vlan 2 status command to check the voice VLAN configuration.
[Switch] display voice-vlan 2 status Voice VLAN Configurations: ----------------------------------------------------------- Voice VLAN ID : 2 Voice VLAN status : Enable Voice VLAN 8021p remark : 6 Voice VLAN dscp remark : 46 ----------------------------------------------------------- Port Information: ------------------------------------------------------------------------------- Port Add-Mode Security-Mode Legacy PribyVLAN Untag ------------------------------------------------------------------------------- GigabitEthernet1/0/2 Manual Normal Disable Enable Disable GigabitEthernet1/0/1 Manual Normal Disable Enable Disable
Configuration Files
Switch configuration file
# sysname Switch # vlan batch 2 to 3 # lldp enable # interface GigabitEthernet1/0/1 port link-type hybrid voice-vlan 2 enable port hybrid pvid vlan 3 port hybrid tagged vlan 2 port hybrid untagged vlan 3 # interface GigabitEthernet1/0/2 port link-type hybrid voice-vlan 2 enable port hybrid tagged vlan 2 # return