Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual page 563

Use to configure a static ATM 1483 subinterface to support a dynamic interface.
Specifies the types of dynamic encapsulation that the subinterface detects and
accepts.
This command creates the layers above ATM 1483 dynamically.
You can enter the command repetitively to support multiple dynamic interface
types.
Select the dynamic next upper-interface type from these options: bridgedEthernet,
ip, ppp, or pppoe.
Encapsulation type lockout is performed on a per-encapsulation-type basis for
each subinterface. An encapsulation type not configured for autodetection with
the auto-configure command is automatically locked out. The lockout temporarily
prevents the static ATM 1483 subinterface from detecting, accepting, and creating
the encapsulation type until the lockout time expires.
Use the lockout-time keyword to set the minimum lockout time and maximum
lockout time, each of which can be in the range 1–86400 seconds (24 hours).The
default range is 1–300 seconds (5 minutes).
Use the none keyword to disable lockout for the specified encapsulation type.
NOTE: Disabling lockout can result in undesirable CPU loading; we recommend that
you not disable lockout for general use. At a minimum, use the default lockout time.
For information about the rules that apply when you configure the lockout time
for dynamic encapsulation type lockout, see "Guidelines for Configuring
Encapsulation Type Lockout" on page 527.
Example 1 Enables autodetection for the PPPoE encapsulation type using the
default lockout time range, 1–300 seconds
host1(config-subif)#auto-configure pppoe
Example 2 Enables autodetection for the PPP encapsulation type using a
nondefault lockout time range, 5–60 seconds
host1(config-subif)#auto-configure ppp lockout-time 5 60
Example 3 Disables encapsulation type lockout for the PPPoE encapsulation
type
host1(config-subif)#auto-configure pppoe lockout-time none
Example 4 Either command reenables encapsulation type lockout for the PPPoE
encapsulation type using the default lockout time range
host1(config-subif)#auto-configure pppoe
host1(config-subif)#no auto-configure pppoe lockout-time
Example 5 Permanently locks out the PPP encapsulation type until the
auto-configure ppp command is issued
host1(config-subif)#no auto-configure ppp
Configuring PPP and PPPoE Dynamic Interfaces over Static ATM
Chapter 17: Configuring Dynamic Interfaces
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