Atm Oversubscription For Dynamic Interfaces; How Oversubscription Works; Static Atm 1483 Subinterfaces - Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual

is granted, the RADIUS attributes are returned, a user login is created, and the
dynamic interfaces are configured from the RADIUS attributes.
ATM 1483 interfaces may receive configuration data from the RADIUS server in the
form of traffic-shaping parameters.
Any changes made to a RADIUS configuration for a given dynamic interface do not
take effect until an existing dynamic interface configured from this RADIUS entry is
re-created, that is, deleted and then dynamically created.

ATM Oversubscription for Dynamic Interfaces

You can take advantage of oversubscription of static ATM 1483 subinterfaces and
bulk-configured ATM VCs with the following dynamic interface configurations:

How Oversubscription Works

Oversubscription is based on the capabilities of the ATM line module on which the
dynamic interface is configured. For details about the capabilities of specific ATM
line modules, see either "Module Capabilities" on page 12 in "Configuring ATM" on
page 3, or the Link Layer Maximums tables in JUNOSe Release Notes, Appendix A,
System Maximums.
Each ATM line module supports a maximum number of configured subinterfaces or
VCs, and a smaller maximum number of subinterfaces or VCs that can be active at
any one time. The maximum number of active subinterfaces or VCs determines the
number of subscribers that can connect to the router through this line module at any
one time.
As a result, you can oversubscribe static ATM 1483 subinterfaces or bulk-configured
VC ranges by creating up to the maximum number of configured subinterfaces or
VCs supported on the module, knowing that no more than the maximum number
of active subinterfaces or VCs can be connected to the router at any one time.

Static ATM 1483 Subinterfaces

An active static ATM 1483 subinterface currently supports a dynamic upper-layer
encapsulation type such as PPP or PPPoE. For ATM line modules that support ATM
subinterface oversubscription, the maximum number of active subinterfaces supported
The router supports oversubscription of static ATM 1483 subinterfaces when
you configure the static ATM 1483 subinterface to support one of the following
dynamic upper-layer encapsulation types: bridged Ethernet, IP, Multilink PPP,
PPP, and PPPoE interfaces. For information about configuring dynamic
upper-layer encapsulation types over a static ATM 1483 subinterface, see "About
Configuring Dynamic Interfaces over Static ATM" on page 522.
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. For information about configuring dynamic
ATM 1483 subinterfaces with bulk-configured VC ranges, see "Configuring ATM
1483 Dynamic Subinterfaces" on page 628 in "Configuring Dynamic Interfaces
Using Bulk Configuration" on page 623.
Chapter 17: Configuring Dynamic Interfaces
Overview
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