Overriding Base Profile Assignments; Changing Vlan Subranges; Static Vlan Subinterfaces Within Vlan Subranges - Juniper JUNOSE SOFTWARE 11.2.X - LINK LAYER CONFIGURATION GUIDE 7-7-2010 Configuration Manual

JunosE 11.2.x Link Layer Configuration Guide
660
When the router receives an incoming data packet on a circuit, it dynamically creates the
VLAN subinterface, using the attributes specified in the base profile. After examining the
contents of the data packet, the router dynamically creates the required interface columns
above the VLAN subinterface, using the configuration attributes contained in the nested
profiles, if specified, or in the base profile itself.

Overriding Base Profile Assignments

You can also use the profile vlan override bulk-config command to assign an overriding
profile to a single VLAN ID or double-tagged S-VLAN ID that exists within a bulk-configured
VLAN subrange. The VLAN ID subrange that encompasses the major interface must have
been previously configured with the vlan bulk-config command for use by a dynamic
VLAN subinterface. After you assign the overriding profile, the router uses the information
in this profile instead of the information in the previously assigned base profile to create
any subsequent VLAN dynamic subinterface columns on the specified VLAN major
interface, as long as they match the VLAN or S-VLAN specified in the override.
The overriding profile, like the original base profile, can include VLAN attributes, nested
profile assignments, and individual characteristics for dynamic upper-interface
encapsulation types.
Overriding the base profile assignment for a VLAN with a profile enables you to create a
special profile for a subscriber in a DSLAM. For example, you can use the overriding profile
to create dynamic VLAN subinterfaces for subscribers with an S-VLAN ID of 200 and a
VLAN ID of 100.
You can also use an overriding profile with debugging attributes to troubleshoot problems
with VLAN dynamic subinterface columns.
For configuration instructions and examples, see "Configuring Overriding Profile
Assignments for VLAN Major Interfaces" on page 664.
NOTE: See JunosE Release Notes, Appendix A, System Maximums for information about
the maximum number of overriding profile assignments currently supported per chassis.

Changing VLAN Subranges

You can add, remove, modify, merge, disable, and enable VLAN subranges within an
existing bulk-configured VLAN range.
For configuration instructions and examples, see "Changing VLAN Subranges" on page 673.

Static VLAN Subinterfaces Within VLAN Subranges

You can configure a static VLAN subinterface with a single-tagged VLAN ID or
double-tagged S-VLAN ID, or an S-VLAN ID with agent-circuit-identifier information that
falls within an existing bulk-configured VLAN subrange. Conversely, you can also create
a bulk-configured VLAN subrange that includes the single-tagged VLAN ID or
double-tagged S-VLAN ID on a static VLAN subinterface. Configuring static VLAN
subinterfaces within VLAN subranges can be useful when you want to create a column
statically for users who have difficulty logging on. You might also want to configure static
Copyright © 2010, Juniper Networks, Inc.