298 Hardware Reference Manual
Intel® IXP2800 Network Processor
Media and Switch Fabric Interface
8.9.2.1 Framer, Single Network Processor Ingress and Egress, andFabric Interface Chip

Figure 107 illustrates the baseline system configuration consisting of the dual chip, full-duplex

fabric configuration of network processors with a framer chip and a fabric interface chip

8.9.2.2 Framer, Dual Network Processor Ingress, Single Network Processor Egress, and Fabric Interface Chip

If additional processing capacity is required in the ingress path, an additional network processor

can be added to the configuration, as shown in Figure 108. The configuration of the interface

between the two ingress network processors can use either the SPI-4.2 or CSIX-L1 protocol.

Figure 107. Framer, Single Network Processor Ingress and Egress, and Fabric Interface Chip

B2745-01
Fabric
Interface
Chip
Framer Flow
Control
PCI
Ingress
Intel® IXP2800
Network
Processor
Egress
Intel IXP2800
Network
Processor

Figure 108. Framer, Dual Processor Ingress, Single Processor Egress, and Fabric Interface

Chip

B2746-01
Ingress
Intel® IXP2800
Network
Processor 0
Fabric
Interface
Chip
Framer Flow
Control
PCI
Ingress
Intel IXP2800
Network
Processor 1
Egress
Intel IXP2800
Network
Processor