Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 303

The encapsulation type can be one of the following:
For each DLCI, configure whether it is a circuit or a regular logical interface. The DLCI
for regular interfaces must be from 1 through 511. For CCC and TCC interfaces, it
must be from 512 through 1022. This restriction does not apply to IQ interfaces. The
default interface type is point to point.
Configuring Ethernet CCC Circuits
You can configure Ethernet CCC encapsulation on Fast Ethernet, Gigabit Ethernet,
and aggregated Ethernet interfaces.
NOTE: CCC over aggregated Ethernet requires an M Series Enhanced Flexible PIC
Concentrator (FPC).
Flexible Frame Relay (
flexible-frame-relay
use flexible Frame Relay encapsulation. You use flexible Frame Relay
encapsulation when you want to configure multiple per-unit Frame Relay
encapsulations. This encapsulation type allows you to configure any combination
of TCC, CCC, and standard Frame Relay encapsulations on a single physical port.
Also, each logical interface can have any DLCI value from 1 through 1022.
Frame Relay CCC version (
interfaces, this encapsulation type is the same as standard Frame Relay for DLCIs
0 through 511. DLCIs 512 through 1022 are dedicated to CCC. The logical
interface must also have
frame-relay-ccc
encapsulation type, you can configure the
Frame Relay TCC version (
the same configuration restrictions, but used for circuits with different media on
either side of the connection.
Extended CCC version (
extended-frame-relay-ccc
you to dedicate DLCIs 1 through 1022 to CCC. The logical interface must have
frame-relay-ccc encapsulation. When you use this encapsulation type, you can
configure the family only.
ccc
Extended TCC version ( extended-frame-relay-tcc
Relay CCC, this encapsulation type allows you to dedicate DLCIs 1 through 1022
to TCC, which is used for circuits with different media on either side of the
connection.
Port CCC version (
frame-relay-port-ccc
Relay Encapsulation over Pseudo-Wires (expired December 2002). This
encapsulation type allows you to transparently carry all the DLCIs between two
customer edge (CE) routers without explicitly configuring each DLCI on the two
provider edge (PE) routers with Frame Relay transport. The connection between
the two CE routers can be either user-to-network interface (UNI) or
network-to-network interface (NNI); this is completely transparent to the PE
routers. The logical interface does not require an encapsulation statement. When
you use this encapsulation type, you can configure the
Defining the Encapsulation for Switching Cross-Connects
Chapter 6: Configuring Circuit and Translational Cross-Connects
)—Intelligent queuing (IQ) interfaces can
frame-relay-ccc )—For E1, E3, SONET/SDH, T1, and T3
encapsulation. When you use this
ccc family only.
frame-relay-tcc )—Similar to Frame Relay CCC and has
)—This encapsulation type allows
)—Similar to extended Frame
)—Defined in the IETF document Frame
ccc family only.
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