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Defining the CCC Encapsulation for LSP Tunnel Cross-Connects

To configure LSP tunnel cross-connects, you must configure the CCC encapsulation on the ingress and egress routers (Router B and Router C, respectively, in Figure 30).

Note: You cannot configure families on CCC interfaces; that is, you cannot include the family statement at the [edit interfaces interface-name unit logical-unit-number] hierarchy level.

For PPP or Cisco HDLC circuits, include the encapsulation statement to configure the entire physical device. For these circuits to work, you must configure logical unit 0 on the interface.




type-fpc/pic/port {

encapsulation (ppp-ccc | cisco-hdlc-ccc);
unit 0;
}

You can include these statements at the following hierarchy levels:

[edit protocols interfaces]
[edit logical-systems logical-system-name protocols interfaces]

For ATM circuits, specify the encapsulation when configuring the VC by including the following statements. For each VC, you configure whether it is a circuit or a regular logical interface.



at-fpc/pic/port {


atm-options {
vpi vpi-identifier maximum-vcs maximum-vcs;
}




unit logical-unit-number {
point-to-point; # Default interface type
encapsulation atm-ccc-vc-mux;
vci vpi-identifier.vci-identifier;
}


}

You can include these statements at the following hierarchy levels:

[edit protocols interfaces]
[edit logical-systems logical-system-name protocols interfaces]

For Frame Relay circuits, include the following statements to specify the encapsulation when configuring the DLCI. For each DLCI, you configure whether it is a circuit or a regular logical interface. The DLCI for regular interfaces must be in the range 1 through 511. For CCC interfaces, it must be in the range 512 through 1022.




type-fpc/pic/port {
encapsulation frame-relay-ccc;


unit logical-unit-number {
point-to-point; # default interface type
encapsulation frame-relay-ccc;
dlci dlci-identifier;
}


}

You can include these statements at the following hierarchy levels:

[edit protocols interfaces]
[edit logical-systems logical-system-name protocols interfaces]

For more information about the encapsulation statement, see the JUNOS Network Interfaces Configuration Guide.

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