User`s guide

3-1
Chapter 3
Operation
The 9G426-02 module is a two port Gigabit Ethernet device. Two front panel
GPIMs support Ethernet connectivity through a Fiber channel and are capable of
providing MMF connectivity through SC connections.
As shown in Figure 3-1, Gigabit Network Interface Blocks (GNIBs) convert data
packets received from any of the GPIMs into a canonical frame format before
forwarding to the SmartSwitch ASIC, while the Internal Network Bus Network
Interface Block (INB NIB) converts data packets received from the INB into a
canonical format before forwarding to the SmartSwitch ASIC.
Figure 3-1. Packet Flow
i960
Processor
GNIB
GNIB
Smart
Switch
ASIC
INB
NIB
DC/DC
Convertor
Diagnostic
Controller
INB
1
2
GPIM
GPIM
SMB 1
SMB 10