Configuring Dynamic Customer VLANs for the Broadband Subscriber Management Solution

In this example configuration, the access interface (ge-1/3/0) connects to a device (that is, a DSLAM) on the access side of the network. This procedure enables the dynamic creation of up to 5 customer VLANs (C-VLANs) for use by the access network subscribers.

To configure dynamic VLANs for the solution:

Configure a dynamic profile for dynamic VLAN creation.

Name the profile.
[edit] user@host# set dynamic-profiles VLAN-PROF
Define the interface-name statement with the internal $junos-interface-ifd-name variable used by the router to match the interface name of the receiving interface.
[edit dynamic-profiles VLAN-PROF] user@host# set interfaces $junos-interface-ifd-name
Define the unit statement with the predefined $junos-interface-unit variable:
[edit dynamic-profiles VLAN-PROF] user@host# set unit $junos-interface-unit
(Optional) To configure the router to respond to any ARP request, specify the proxy-arp statement.
[edit dynamic-profiles VLAN-PROF interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"] user@host# set proxy-arp
Specify the VLAN ID variable.
[edit dynamic-profiles VLAN-PROF interfaces "$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.
Specify the inner VLAN ID variable.
[edit dynamic-profiles VLAN-PROF 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.
Specify the family type.
[edit dynamic-profiles VLAN-PROF interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit"] user@host# set family inet
(Optional) Enable IP and MAC address validation for dynamic IP demux interfaces in a dynamic profile.
[edit dynamic-profiles VLAN-PROF interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet] user@host# set mac-validate strict
Specify the unnumbered address and preferred source address.
[edit dynamic-profiles VLAN-PROF interfaces "$junos-interface-ifd-name" unit "$junos-interface-unit" family inet] user@host# set unnumbered-address lo.0 preferred-source-address 33.33.0.1

Associate the dynamic profile with the VLAN interface.

Access the interface that you want to use for creating VLANs.
[edit interfaces] user@host# edit interfaces ge-1/3/0
Access the [auto-configure] hierarchy level.
[edit interfaces ge-1/3/0] user@host# edit auto-configure
Access the [stacked-vlan-ranges] hierarchy level.
[edit interfaces ge-1/3/0 auto-configure] user@host# edit stacked-vlan-ranges
Specify the dynamic VLAN profile that you want the interface to use.
[edit interfaces ge-1/3/0 auto-configure stacked-vlan-ranges] user@host# set dynamic-profile VLAN-PROF

Specify the Ethernet packet type that the VLAN dynamic profile can accept.

Note: This release supports only INET (IPv4) Ethernet packet types.


                  
                     [edit interfaces ge-1/3/0 auto-configure stacked-vlan-ranges
                        VLAN-PROF]
                     
                     user@host# set accept inet

Define VLAN ranges for use by the dynamic profile when dynamically creating VLAN IDs. For this solution, specify the outer and inner stacked VLAN ranges that you want the dynamic profile to use. To mimic the static VLAN configuration, the following example specifies an outer stacked VLAN ID range of 3 and an inner stacked VLAN ID range of 1–5 (enabling a range from 1 through 5 for the inner stacked VLAN ID).


                  
                     [edit interfaces ge-0/0/0 auto-configure vlan-ranges]
                     user@host# set ranges 3,1–5

Configuring Dynamic Customer VLANs for the Broadband Subscriber Management Solution

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