Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Руководство по настройке

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interface column. After you define the static lower layers, you assign a profile to the
highest static layer of the interface column.
When a dynamic interface is configured, the configuration data received from the
RADIUS authentication server typically overrides configuration data obtained from
a profile.
The atm atm1483 auto-configure command specifies the types of dynamic
upper-interface encapsulations that are accepted or detected by a dynamic ATM 1483
subinterface. For flexibility, the router provides the ability to configure an ATM 1483
subinterface with distinct profile assignments for each encapsulation type supported
by the
atm atm1483 auto-configure command. For more information about using
this command, see “atm atm1483 auto-configure” on page 640.
In contrast to dynamic ATM 1483 subinterfaces, dynamic VLAN subinterfaces support
recognition and creation of simultaneous IP and PPPoE upper dynamic interface
types. The
vlan auto-configure command identifies the encapsulation type. For
flexibility, the router provides the ability to configure a VLAN subinterface with distinct
profile assignments for each encapsulation type supported by the
vlan auto-configure
command. For more information about using this command, see “vlan auto-configure”
on page 676.
For more information about configuring profiles, see “Configuring a Dynamic Interface
from a Profile” on page 563 in “Configuring Dynamic Interfaces” on page 515.
ATM Oversubscription for Bulk-Configured VC Ranges
You can take advantage of oversubscription of bulk-configured ATM VCs. The router
supports oversubscription of bulk-configured VC ranges when you create a
bulk-configured VC range on a static ATM AAL5 interface for use by a dynamic
ATM 1483 subinterface.
Oversubscription of bulk-configured VC ranges works in a similar, but not identical,
manner to oversubscription of static ATM 1483 subinterfaces that support dynamic
upper-layer encapsulation types. For more information, see “ATM Oversubscription
for Dynamic Interfaces” on page 519 in “Configuring Dynamic Interfaces” on page 515.
Bulk-Configured VC Ranges
An active bulk-configured VC range is associated with a dynamic ATM 1483
subinterface that supports a dynamic upper-layer encapsulation type. For ATM line
modules that support VC oversubscription, the maximum number of active
bulk-configured VCs per line module is less than the maximum number of individual
VCs created from the total number of bulk-configured VC ranges that the line module
supports. For information about configuring dynamic ATM 1483 subinterfaces with
bulk-configured VC ranges, see “Configuring ATM 1483 Dynamic Subinterfaces” on
page 628.
When the maximum number of active bulk-configured VCs has been reached, the
router prevents all additional subscribers associated with the remaining inactive
bulk-configured VCs from connecting to the line module until one of the following
conditions occurs:
Overview
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Chapter 18: Configuring Dynamic Interfaces Using Bulk Configuration