Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 242

JUNOS 10.1 Network Interfaces Configuration Guide
You can include this statement at the following hierarchy levels:
Some of the ATM encapsulations are defined in RFC 2684, Multiprotocol Encapsulation
over ATM Adaptation Layer 5.
The following restrictions apply to logical interface encapsulation:
For more information about ATM encapsulations, see "Configuring ATM Interface
Encapsulation" on page 338.
For more information about Frame Relay encapsulations, see "Configuring Frame
Relay Interface Encapsulation" on page 380.
172
Configuring Interface Encapsulation on Logical Interfaces
frame-relay-ether-type | frame-relay-ether-type-tcc | frame-relay-ccc | frame-relay-tcc
| multilink-frame-relay-end-to-end | multilink-ppp | vlan-ccc | vlan-tcc | vlan-vpls);
[edit interfaces interface-name unit logical-unit-number]
[edit logical-systems logical-system-name interfaces interface-name unit
logical-unit-number]
With the atm-nlpid, atm-cisco-nlpid, and atm-vc-mux encapsulations, you can
configure the inet family only.
With the CCC circuit encapsulations, you cannot configure a family on the logical
interface.
A logical interface cannot have frame-relay-ccc encapsulation unless the physical
device also has frame-relay-ccc encapsulation.
A logical interface cannot have frame-relay-tcc encapsulation unless the physical
device also has frame-relay-tcc encapsulation. In addition, you must assign this
logical interface a DLCI from 512 through 1022 and configure it as point-to-point.
A logical interface cannot have frame-relay-ether-type or frame-relay-ether-type-tcc
encapsulation unless the physical interface has flexible-frame-relay encapsulation
and is on an IQ or IQE PIC.
For frame-relay-ether-type-tcc encapsulation, you must assign this logical interface
a DLCI from 512 through 1022.
For interfaces that carry IP version 6 (IPv6) traffic, you cannot configure
ether-over-atm-llc encapsulation.
When you use ether-over-atm-llc encapsulation, you cannot configure multipoint
interfaces.
A logical interface cannot have vlan-ccc or vlan-vpls encapsulation unless the
physical device also has vlan-ccc or vlan-vpls encapsulation, respectively. In
addition, you must assign this logical interface a VLAN ID from 512 through
1023; if the VLAN ID is 511 or lower, it is subject to the normal destination filter
lookups in addition to source address filtering. For more information, see
"Configuring VLAN Encapsulation" on page 629.
You can create an ATM cell-relay circuit by configuring an entire ATM physical
device or an individual virtual circuit (VC). When you configure an entire device,
only cell-relay encapsulation is allowed on the logical interfaces. For more
information, see "Configuring an ATM1 Cell-Relay Circuit" on page 340.