Configuring A Dynamic Vlan Subinterface - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

Configuring a Dynamic VLAN Subinterface

Copyright © 2010, Juniper Networks, Inc.
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
VLAN subinterface within a VLAN subrange as a static column to the DSLAM; the dynamic
column can be for subscribers.
The following rules apply when you configure either a static VLAN subinterface within
an existing bulk-configured VLAN subrange or a subrange that includes an existing static
VLAN interface:
You have no restrictions on how to configure the static VLAN subinterface.
Static VLAN interfaces defined within a bulk-configured VLAN subrange are stored in
NVS and preserved after a reboot.
The base profile associated with the VLAN subrange does not apply to any statically
defined VLAN interfaces that fall within the subrange.
If a VLAN subrange includes a statically defined VLAN subinterface, overriding profile
assignments configured for the same VLAN ID as a statically defined VLAN subinterface
become inactive until the static VLAN subinterface is removed. The overriding profile
becomes active again when you remove the static VLAN subinterface. You can display
the current operational status (active or inactive) of overriding profile assignments by
using the show vlan bulk-config command.
Operations that add, remove, modify, merge, disable, or enable VLAN subranges within
a bulk-configured VLAN range do not affect any static VLAN subinterfaces defined
within the VLAN subrange.
You cannot create a static VLAN if the single-tagged VLAN ID or double-tagged S-VLAN
ID conflicts with an existing VLAN dynamic subinterface column. Such a configuration
would disrupt subscribers already connected to the router via the dynamic subinterface.
For configuration information and examples, see "Configuring Static VLAN Subinterfaces
Within VLAN Subranges" on page 679.
To configure a dynamic VLAN subinterface:
Configure profiles containing characteristics for the dynamic upper-interface
1.
encapsulation types to be created over the dynamic VLAN subinterface.
These profiles are referenced in the base profile for the dynamic VLAN subinterface
as nested profile assignments. For detailed instructions on creating profiles, see
"Configuring a Dynamic Interface from a Profile" on page 559 in "Configuring Dynamic
Interfaces" on page 511.
(Optional) Create the profile for an upper-interface encapsulation type, and include
2.
additional profile characteristics for other encapsulation types as needed. Perform
this step if you want to create a nested profile assignment in Step 5.
host1(config)#profile myIpProfile
Chapter 18: Configuring Dynamic Interfaces Using Bulk Configuration
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