Table Of Contents

Frame Relay-ATM Interworking Supported Standards

FRF.5 Frame Relay-ATM Network Interworking

FRF.8 Frame Relay-ATM Service Interworking

Frame Relay-ATM Interworking Supported Standards

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This appendix describes the Frame Relay Forum standards that are supported by the following features:

•FRF.5 Frame Relay-ATM Network Interworking

•FRF.8 Frame Relay-ATM Service Interworking

FRF.5 Frame Relay-ATM Network Interworking

This section compares the networking standards defined in Frame Relay Forum document number FRF.5, Frame Relay/ATM PVC Network Interworking Implementation Agreement, with those defined for the Cisco FRF.5 Frame Relay-to-ATM Network Interworking feature.

The following sections and subsections in this implementation agreement are supported as follows:

•4.1 Frame Formatting and Delimiting: Only the default (2 octet) address field is supported.

•4.3 Connection Multiplexing: Mapping one-to-one connections between a Frame Relay data-link connection identifier (DLCI) and Frame Relay service specific convergence sublayer (SSCS) DLCI is done using the default DLCI value of 1022. Mapping many-to-one connections from Frame Relay DLCI to Frame Relay-SSCS DLCI and vice versa is user-configured (and it must be agreed upon between the two ATM end systems).

•4.5.2.2 Frame Relay to B-ISDN Direction: Backward congestion indication is not supported.

•5.1 Traffic Management: There is no direct mapping between Frame Relay and ATM traffic parameters; these parameters are configured independently.

•5.2 PVC Management: PVC management is not supported.

•5.3 Description of Upper Layer User Protocol Encapsulation Methods: This section applies only to terminal equipment and is not supported.

•5.4.1 Operations for the Common Part of the AAL Type 5: The error counters mentioned in this section are reset at startup, and are counted until they are reset.

For information about how to configure FRF.5 Frame Relay-ATM Network Interworking, see the chapter "Configuring Frame Relay-ATM Interworking."

FRF.8 Frame Relay-ATM Service Interworking

This section compares the networking standards defined in Frame Relay Forum Document Number FRF.8, Frame Relay/ATM PVC Service Interworking Implementation Agreement, with those defined for the Cisco FRF.8 Frame Relay-to-ATM Service Interworking feature.

The following sections and subsections in the FRF.8 agreement are supported as follows:

•5.1 Traffic Management: There is no direct mapping between the Frame Relay and ATM traffic parameters; these parameters are configured independently.

•5.2 Frame Relay PVC Management Procedures: Procedures for the asynchronous status message defined in Q.933 annex A are not supported.

•5.3.1.4 Fragmentation and Reassembly: Fragmentation and reassembly are not supported.

•5.4 Address Resolution: The IP and IPX protocols are supported.

•6.0 Operations for the Common Part of the AAL Type 5: The error counters mentioned in this section are reset at startup, and are counted until they are reset.

For information about how to configure FRF.8 Frame Relay-ATM Service Interworking, see the chapter "Configuring Frame Relay-ATM Interworking."

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.

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