This document describes the configuration steps required on a LANCOM managed switch of the GS-23xx series in order to configure a Voice VLAN. If an LLDP-MED compatible VoIP telephone is connected to the switch, the switch recognizes the telephone and activates the Voice VLAN on the switch port. As the Voice VLAN is tagged on this port (tagging mode
Hybrid), tagging has to be also activated on the VoIP telephone. It is also possible to connect additional network devices to this port, which are to communicate in another VLAN. For this purpose there is a separate port on many VoIP telephones a PC can be connected to for example. This can save an additional switch.
Requirements:
1) Connect to the switch via the webinterface, go to the menu Configuration → VLAN → VLAN Membership and click Add New VLAN.
2) Modify the following parameters and click Apply:
- VLAN ID: Enter the VLAN ID of the Voice VLAN (in this example the VLAN ID 200).
- VLAN Name: Enter a descriptive name for the Voice VLAN (in this example Voice).
- Port Members: Select the Port, the router is connected to (in this example Port 8).
3) Connect the IP telephone to the switch. For this example we use switch port 1.
4) Go to the menu
Configuration → LLDP → LLDP Configuration and set the
Mode to
Enabled for the ports, where a VoIP telephone is connected, to activate LLDP (in this example
Port 1). Click
Apply afterwards.
5) Switch to the menu Configuration → LLDP → LLDP-MED-Configuration.
6) Under Policies click on the button Add new policy.
7) For the Policy modify the following parameters and click Apply:
- Application Type: In the dropdown menu select the option Voice.
- Tag: In the dropdown menu select the option Tagged.
- VLAN ID: Enter the VLAN ID of the Voice VLAN (in this example the VLAN ID 200).
- L2 Priority: Enter the value 6.
- DSCP: Enter the value 49.
8) In the Policy Port Configuration select the Policy created in step 7) for the Port, the VoIP telephone is connected to (in this example Port 1). Click Apply afterwards.
9) Recheck the LLDP-MED Neighbor information after the LLDP negotiation between the switch and the IP telephone.
10) Go to the menu Configuration → Voice VLAN → Configuration.
11) Under Voice VLAN Configuration mify the following parameters:
- Mode: In the dropdown menu select the option Enabled to activate the Voice VLAN.
- VLAN ID: Enter the VLAN ID of the Voice VLAN (in this example the VLAN ID 200).
12) Under Port Configuration modify the following parameters for the Port, the VoIP telephone is connected to. Click Apply afterwards.
- Mode: In the dropdown menu select the option Auto.
- Discovery Protocol: In the dropdown menu select the option LLDP.
13) Go to the menu
Configuration → VLAN → Switch Status and make sure that
Port 1 is a member of the VLAN with the ID 200.
14) Navigate to the menu Maintenance → Save/Restore → Save Start und save the configuration as Start Configuration.
To check the functionality
please connect a PC to the switch, e.g. to port 3 and perform the following configuration on the switch:
- Port 3 must be a member of the VLAN with the ID 200.