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Configuring VLAN Dynamic Profiles

Creating dynamic single-tag VLANs or stacked (dual-tag) VLANs requires the use of dynamic profiles. The dynamic profile automatically references the VLAN interface and creates the interface unit and the necessary VLAN IDs for each new single-tag VLAN or stacked VLAN.

Caution: VLAN dynamic profiles do not support user-defined variables. Use only JUNOS VLAN predefined variables when configuring VLAN dynamic profiles. See Dynamic Variables Overview for information about dynamic variables.

Configuring a VLAN Dynamic Profile for Creating Single-Tag VLANs Using Standard TPID Values

You can configure a VLAN dynamic profile to create single-tag VLANs that accept only standard TPID values (a TPID value of 0x8100) by using use the vlan-id statement and the $junos-vlan-id variable.

Caution: This procedure configures a dynamic profile that accepts only TPID values of 0x8100. To configure a VLAN dynamic profile for creating VLANs using any TPID values, see Configuring a VLAN Dynamic Profile for Creating Single-Tag VLANs Using Any TPID Values.

Before you begin:

To configure a dynamic VLAN profile:

  1. Ensure that the VLAN dynamic profile uses the $junos-interface-ifd-name variable for the dynamic interface and the $junos-interface-unit variable for the interface unit.
  2. (Optional) To support dynamic demux interfaces, enable them using the demux-source statement.
    [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set demux-source inet
  3. (Optional) To configure the router to respond to any ARP request, specify the proxy-arp statement.
    [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set proxy-arp
  4. Specify that you want to use dynamic VLAN IDs in the dynamic profile.
    [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set vlan-id $junos-vlan-id

    When the dynamic profile is instantiated, the variable is dynamically replaced with a VLAN ID within the VLAN range specified at the [interfaces] hierarchy level.

  5. Define the unit family.
    1. Specify the family type.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
      user@host# set family inet
    2. (Optional) Enable IP and MAC address validation for dynamic IP demux interfaces in a dynamic profile.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]
      user@host# set mac-validate strict
    3. Specify the unnumbered address.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]
      user@host# set unnumbered-address lo.0
    4. Specify the preferred source address.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]
      user@host# set preferred-source-address 192.0.16.1

Configuring a VLAN Dynamic Profile for Creating Single-Tag VLANs Using Any TPID Values

You can configure a VLAN dynamic profile to create single-tag VLANs that accept any TPID values by configuring the vlan-tags statement and the $junos-vlan-id variable.

Note: For procedures to configure a VLAN dynamic profile for creating single-tag VLANs that use only standard TPID values (a TPID value of 0x8100), see Configuring a VLAN Dynamic Profile for Creating Single-Tag VLANs Using Standard TPID Values.

Before you begin:

To configure a dynamic VLAN profile:

  1. Ensure that the VLAN dynamic profile uses the $junos-interface-ifd-name variable for the dynamic interface and the $junos-interface-unit variable for the interface unit.
  2. (Optional) To support dynamic demux interfaces, enable them using the demux-source statement.
    [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set demux-source inet
  3. (Optional) To configure the router to respond to any ARP request, specify the proxy-arp statement.
    [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set proxy-arp
  4. Specify that you want to use dynamic VLAN IDs in the dynamic profile.
    [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set vlan-tags outer $junos-vlan-id

    The variable is dynamically replaced with both the TPID value and a VLAN ID within the VLAN range specified at the [interfaces] hierarchy level.

  5. Define the unit family.
    1. Specify the family type.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
      user@host# set family inet
    2. (Optional) Enable IP and MAC address validation for dynamic IP demux interfaces in a dynamic profile.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]
      user@host# set mac-validate strict
    3. Specify the unnumbered address.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]
      user@host# set unnumbered-address lo.0
    4. Specify the preferred source address.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]
      user@host# set preferred-source-address 192.0.16.1

Configuring a Stacked VLAN Dynamic Profile

You can configure a dynamic profile for creating stacked 802.1Q VLANs.

Before you begin:

To configure a stacked VLAN dynamic profile:

  1. Ensure that the VLAN dynamic profile uses the $junos-interface-ifd-name variable for the dynamic interface and the $junos-interface-unit variable for the interface unit.
  2. (Optional) To support dynamic demux interfaces, enable them using the demux-source statement.
    [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set demux-source inet
  3. (Optional) To configure the router to respond to any ARP request, specify the proxy-arp statement.
    [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set proxy-arp
  4. Specify the outer VLAN ID variable.
    [edit dynamic-profiles STACKED-VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set vlan-tags outer $junos-stacked-vlan-id

    The variable is dynamically replaced with an outer VLAN ID within the VLAN range specified at the [interfaces] hierarchy level.

  5. Specify the inner VLAN ID variable.
    [edit dynamic-profiles STACKED-VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
    user@host# set vlan-tags inner $junos-vlan-id

    The variable is dynamically replaced with an inner VLAN ID within the VLAN range specified at the [interfaces] hierarchy level.

  6. Define the unit family.
    1. Specify the family type.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]
      user@host# set family inet
    2. (Optional) Enable IP and MAC address validation for dynamic IP demux interfaces in a dynamic profile.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]
      user@host# set mac-validate strict
    3. Specify the unnumbered address.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]
      user@host# set unnumbered-address lo.0
    4. Specify the preferred source address.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]
      user@host# set preferred-source-address 192.0.16.1
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