Network Interworking - Cisco BPX 8620 Installation And Configuration Manual

Chapter 1 The BPX Switch: Functional Overview

Network Interworking

Part A of Figure 1-4 shows typical Frame Relay to network interworking. In this example, a Frame Relay
connection is transported across an ATM network, and the interworking function is performed by both
ends of the ATM network.
These are typical configurations:
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Part B of Figure 1-4 shows a form of network interworking where the interworking function is performed
by only one end of the ATM network, and the CPE connected to the other end of the network must itself
perform the appropriate service-specific convergence sublayer function.
These are sample configurations:
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Network Interworking is supported by the FRM, UFM-C, and UFM-U on the IGX switch, and the FRSM
on the MGX 8200 series. The Frame Relay Service Specific Convergence Sublayer (FR-SSCS) of AAL5
is used to provide protocol conversion and mapping.
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
IGX switch Frame Relay (shelf/feeder) to IGX switch Frame Relay (either routing node or
shelf/feeder).
MGX 8200 series Frame Relay to MGX 8200 series Frame Relay.
MGX 8200 series Frame Relay to IGX switch Frame Relay (either routing node or shelf/feeder).
IGX switch Frame Relay (routing node, shelf, or feeder) to BPX switch or to MGX 8220 ATM port.
MGX 8200 series Frame Relay to BPX switch or MGX 8200 series ATM port.
Cisco BPX 8600 Series Installation and Configuration
BPX Switch Operation
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