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CHAPTER
22-1
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.10, Part Number 78-11603-01 Rev. D0, July 2001
22
Configuring Frame Relay to ATM Network
and Service Interworking
Frame Relay to ATM Interworking lets you retain your existing Frame Relay services, and as your needs
expand, migrate to the higher bandwidth capabilities provided by BPX switch ATM networks.
This chapter describes Frame Relay to ATM interworking:
• Service Interworking
• Networking Interworking
• ATM Protocol Stack
• BTM Interworking and the ATM Protocol Stack
• BTM Control Mapping: Frames and Cells
• OAM Cells
• Connection Management
Frame Relay to ATM Interworking enables Frame Relay traffic to be connected across high-speed ATM
trunks using ATM standard Network and Service Interworking (see Figure 22-1 and Figure 22-2).
Two types of Frame Relay to ATM interworking are supported:
• Network Interworking
PerformedbytheBTMcardontheIGXswitchandtheFRSMcardontheMGX8220.
• Service Interworking
Performed by the FRSM card on the MGX 8220.
See Figure 22-3 for some examples of ATM-to-Frame Relay Interworking.