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