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Routed VLAN Interfaces

You can configure a routed VLAN interface (RVI) for a private VLAN (PVLAN) on an EX Series Virtual Chassis. Instead of a router connected to a promiscuous port routing Layer 3 traffic between isolated and community members, you can alternatively use an RVI.

To set up routing within a PVLAN, one RVI must be configured for the primary VLAN on one switch or Virtual Chassis in the PVLAN domain. This RVI serves the entire PVLAN domain regardless of whether the domain consists of one or more switches. After you configure the RVI, Layer 3 packets received by the secondary VLAN interfaces are mapped to and routed by the RVI.

When setting up the RVI, you must also enable proxy Address Resolution Protocol (ARP) so that the RVI can handle ARP requests received by the secondary VLAN interfaces.

Configuring a Routed VLAN Interface in a Private VLAN on an EX Series Switch

To configure an RVI for a PVLAN:

  1. Create a logical Layer 3 RVI on a subnet for the primary VLAN’s broadcast domain:
  2. Enable unrestricted proxy ARP on the RVI:
  3. Disable sending protocol redirect messages on the RVI:
  4. Link the primary VLAN to the RVI:

    The value of logical-unit-number is the same value that you supplied for logical-unit-number in the previous steps.

Configuring a Routed VLAN Interface in a Private VLAN on an EX Series Switch (ELS Procedure)

On a switch with ELS, the RVI is called the Intergrated Routing and Bridging (IRB) interface.

To configure an IRB for a PVLAN:

  1. Create an IRB on a subnet for the primary VLAN’s broadcast domain.
  2. Enable unrestricted proxy ARP on the IRB.
  3. Disable sending protocol redirect messages on the IRB.
  4. Link the primary VLAN to the IRB.

    The value of logical-unit-number is the same value that you supplied for logical-unit-number in the previous steps.

Verifying Routed VLAN Interface Status and Statistics on EX Series Switches

Purpose

Determine status information and traffic statistics for routed VLAN interfaces (RVIs) by using the following commands:

Action

Display RVI interfaces and their current states:

Display Layer 2 VLANs, including any tags assigned to the VLANs and the interfaces associated with the VLANs:

Display Ethernet switching table entries for the VLAN that is attached to the RVI:

Display an RVI’s ingress-counting statistics with either the show interfaces vlan detail command or the show interfaces vlan extensive command. Ingress counting is displayed as Input bytes and Input packets under Transit Statistics.

Meaning

  • show interfaces vlan displays a list of interfaces, including RVI interfaces, and their current states (up, down).

  • show vlans displays a list of VLANs, including any tags assigned to the VLANs and the interfaces associated with the VLANs.

  • show ethernet-switching table displays the Ethernet switching table entries, including VLANs attached to the RVI.

  • show interfaces vlan detail displays RVI ingress counting as Input Bytes and Input Packets under Transit Statistics.

Change History Table

Feature support is determined by the platform and release you are using. Use Feature Explorer to determine if a feature is supported on your platform.

Release
Description
14.1X53-D10
Starting with Junos OS Release 14.1X53-D10, you can configure a routed VLAN interface (RVI) for a private VLAN (PVLAN) on an EX8200 switch or EX8200 Virtual Chassis.