How do you set the voice VLAN on a Juniper switch?

Posted on by Muna Meyer

How do you set the voice VLAN on a Juniper switch?

To configure VoIP with LLDP-MED and 802.1X:

  1. Configure the VLANs for voice and data:
  2. Associate the VLAN data-vlan with the interface:
  3. Configure the interface as an access interface, configure support for Ethernet switching, and add the data-vlan VLAN:

What is Voice VLAN?

A voice VLAN is a VLAN ( virtual local area network) that is specifically allocated for user’s voice data streams. It ensures the quality of voice traffic by improving the transmission priority of it when transmitted with other traffic.

What is Juniper default VLAN?

In Cisco switches the default VLAN is untagged and is the native VLAN i.e. VLAN 1 but in Juniper there is no default native VLAN. You must configure it manually. In Cisco switches the trunk ports accept all VLANs in the range of 1 to 4095 by default but in Juniper, trunk ports do not support any VLANs.

How do you check a VLAN on a Juniper switch?

To display an 802.1X supplicant successfully authenticated in multiple-supplicant mode with dynamic VLAN movement, use the show vlans vlan-name extensive operational mode command, where vlan-name is the dynamic VLAN.

Is voice VLAN necessary?

The phones generally needed a specific DHCP configuration, and if the phones were in their own VLAN this was easier to do. The curious thing is that at no point did anything actually require a voice VLAN. They just made life a lot easier and more “automagic”.

What is the difference between voice VLAN and data VLAN?

The LAN used for voice traffic from the IP phone is called the voice VLAN and the VLAN used for data is called the data or access VLAN.

What is inner VLAN?

“Inner tags” contain VLAN information that belong to the traffic of the NSP’s customers. Though Q-in-Q/802.1ad was designed originally for NSPs to add/remove transparently to a customer (so called ‘pushing’ and ‘popping’ of outer tags) it is routinely utilised to carry a range of VLANs across a single VXC.

How do I add a VLAN to my Juniper router?

To create inter VLAN routing by using routed VLAN interfaces (RVI), perform the following procedure:

  1. Create a layer 2 VLAN: root# set vlans vlan-id (1..4094)>
  2. Create a logical layer 3 VLAN interface: root# set interfaces vlan unit family inet address

How can I see the VLAN on a switch?

The show vlans command lists the VLANs currently running in the switch, with VID, VLAN name and VLAN status. Dynamic VLANs appear only if the switch is running with GVRP enabled and one or more ports has dynamically joined an advertised VLAN. In the default configuration, GVRP is disabled.

How do you create a VLAN in Juniper?

From configuration mode, create the VLAN and add access vlan members to it:

  1. ELS EX and QFX devices: root> configure. Entering configuration mode. [edit] root# set vlans vlan-id
  2. Legacy devices EX: root> configure. Entering configuration mode. [edit]

Is LLDP supported on extended ports in Junos?

Starting with Junos OS Release 14.2, LLDP is supported on extended ports in the Junos Fusion technology.For information about interface names in the Junos Fusion technology, see Understanding Junos Fusion Ports. The advertisement interval determines the frequency that an LLDP interface sends LLDP advertisement frames.

How to configure LLDP on redundant Ethernet (Reth) interfaces?

The interface-name must be the physical interface (for example, ge-1/0/0) and not a logical interface (unit). Starting in Junos OS Release 19.4R2, you can configure the LLDP on redundant Ethernet (reth) interfaces. Use the set protocol lldp interface command to configure LLDP on reth interface. To configure LLDP on all interfaces:

How do I configure LLDP-MED on switches running Junos OS?

On switches running Junos OS for EX Series switches with support for the Enhanced Layer 2 Software (ELS) configuration style, configure LLDP-MED on the physical interface–for example, on ge-0/0/2. For more about ELS, see Using the Enhanced Layer 2 Software CLI.

How does the switch assign a Voice VLAN to an IP telephone?

If your IP telephone is configured for VoIP (VoIP), the switch automatically detects the configuration and assigns the telephone to the voice VLAN. The implementation of a voice VLAN on an IP telephone is vendor-specific.