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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.

    Note: 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 the vlan-id statement and the $junos-vlan-id variable.

    Note: 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 $junos-interface-unit variable for the interface unit.
    2. (Optional) To support dynamic demux interfaces, enable them using the demux-source statement.
      1. For IPv4 demux interfaces, specify inet as the source type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set demux-source inet
      2. For IPv6 demux interfaces, specify inet6 as the source type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set demux-source inet6
    3. (Optional) To configure the router to respond to any ARP request, specify the proxy-arp statement.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$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 type.
      1. For IPv4 interfaces, specify the inet family type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set family inet
      2. For IPv6 interfaces, specify the inet6 family type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set family inet6
    6. (Optional) Enable IP and MAC address validation for dynamic 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 loose
    7. Specify the unnumbered address and preferred source address.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]user@host# set unnumbered-address lo.0 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 $junos-interface-unit variable for the interface unit.
    2. (Optional) To support dynamic demux interfaces, enable them using the demux-source statement.
      1. For IPv4 demux interfaces, specify inet as the source type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set demux-source inet
      2. For IPv6 demux interfaces, specify inet6 as the source type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set demux-source inet6
    3. (Optional) To configure the router to respond to any ARP request, specify the proxy-arp statement.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$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 type.
      1. For IPv4 interfaces, specify the inet family type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set family inet
      2. For IPv6 interfaces, specify the inet6 family type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set family inet6
    6. (Optional) Enable IP and MAC address validation for dynamic 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 loose
    7. Specify the unnumbered address and preferred source address.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]user@host# set unnumbered-address lo.0 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 $junos-interface-unit variable for the interface unit.
    2. (Optional) To support dynamic demux interfaces, enable them using the demux-source statement.
      1. For IPv4 demux interfaces, specify inet as the source type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set demux-source inet
      2. For IPv6 demux interfaces, specify inet6 as the source type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set demux-source inet6
    3. (Optional) To configure the router to respond to any ARP request, specify the proxy-arp statement.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$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 type.
      1. For IPv4 interfaces, specify the inet family type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set family inet
      2. For IPv6 interfaces, specify the inet6 family type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set family inet6
    7. (Optional) Enable IP and MAC address validation for dynamic 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 loose
    8. Specify the unnumbered address and preferred source address.
      [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]user@host# set unnumbered-address lo.0 preferred-source-address 192.0.16.1

    Configuring a VLAN Dynamic Profile That Associates VLAN Interfaces with Separate Routing Instances

    You can configure a VLAN dynamic profile that dynamically creates underlying VLAN interfaces and associates these interfaces with dynamically created routing instances. The VLAN interface is created in the default logical system (LS) for a specific routing instance as defined by VSA 26–1 (Virtual-Router) on the AAA server (for example, RADIUS server).

    To configure a dynamic VLAN profile using routing instances:

    1. Name the profile.
      [edit]user@host# edit dynamic-profiles VLAN_PROFILE_RI
    2. Specify that you want to dynamically create routing instances on the default logical system.
      [edit dynamic-profiles VLAN_PROFILE_RI]user@host# edit routing-instances $junos-routing-instance
    3. Define the routing instance interface statement with the internal $junos-interface-name variable used by the router to match the interface name of the receiving interface.
      [edit dynamic-profiles VLAN_PROFILE_RI routing-instances “$junos-routing-instance”]user@host# set interface $junos-interface-name
    4. Define the dynamic profile interfaces statement with the internal $junos-interface-ifd-name variable.
      [edit dynamic-profiles VLAN_PROFILE_RI]user@host# edit interfaces $junos-interface-ifd-name
    5. Define the unit statement with the internal $junos-interface-unit variable used by the router to generate a unit value for the interface.
      [edit dynamic-profiles VLAN_PROFILE_RI interfaces "$junos-interface-ifd-name"]user@host# edit unit $junos-interface-unit
    6. To support dynamic demux interfaces, enable them using the demux-source statement.
      1. For IPv4 demux interfaces, specify inet as the source type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set demux-source inet
      2. For IPv6 demux interfaces, specify inet6 as the source type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set demux-source inet6
    7. (Optional) To configure the router to respond to any ARP request, specify the proxy-arp statement.
      [edit dynamic-profiles VLAN_PROFILE_RI interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set proxy-arp
    8. Specify that you want to use dynamic VLAN IDs in the dynamic profile.
      [edit dynamic-profiles VLAN_PROFILE_RI interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set vlan-id $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.

    9. Define the unit family type.
      1. For IPv4 interfaces, specify the inet family type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set family inet
      2. For IPv6 interfaces, specify the inet6 family type.
        [edit dynamic-profiles VLAN-PROF1 interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"]user@host# set family inet6
    10. (Optional) Enable IP and MAC address validation for dynamic demux interfaces in a dynamic profile.
      [edit dynamic-profiles VLAN_PROFILE_RI interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]user@host# set mac-validate loose
    11. Specify the unnumbered address to dynamically create loopback interfaces.

      Note: You can optionally specify the preferred source address. This option is included in the step.

      [edit dynamic-profiles VLAN_PROFILE_RI interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet]user@host# set unnumbered-address $junos-loopback-interface preferred-source-address 192.0.16.1

    Published: 2013-02-11

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