Specifications

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2.10.20 Frame Relay Specifications
Frame Relay is supported on all serial and POS interfaces as per RFC 1490.
You can configure Frame Relay for the following types of connections:
§ Point-to-Point Connection
§ Point-to-Multipoint Connection
§ Multicast-Capable Frame Relay Connection
The M-xxx Routers will typically serve as a Frame Relay edge device.
You may also use Circuit Cross Connect (CCC) in which case the M-xxx behaves
as a Layer-2 switch.
The above figure illustrates a Layer 2 switching cross-connect. In this topology,
Router A and Router C have Frame Relay connections to Router B, which is a
Juniper Networks router. CCC allows you to configure Router B to act as a Frame
Relay (Layer 2) switch. To do this, you configure a circuit from Router A to Router
C that passes through Router B, effectively configuring Router B as a Frame
Relay switch with respect to these routers. This configuration allows Router B to
transparently switch packets (frames) between Router A and Router C without
regard to the packets' contents or the Layer 3 protocols. The only processing that
Router B performs is to translate DLCI 600 to 750.
M40
Router A
FR DLCI: 600
FR DLCI: 750
Router C
Router B