Cabletron Systems TRFMIM-28 User Manual
Operation
3-2
Figure 3-1. Packet Flow for the 9H423-28
ENIB/FENIB
The Ethernet Network Interface Block (ENIB) and Fast Ethernet (FENIB) convert
Ethernet data packets received through front panel ports into a common
canonical format that allows the SmartSwitch ASIC Engine to determine the
proper destination port. The ENIB/FENIB also convert data packets from the
common canonical format back to Ethernet data packets for transmission out
front panel ports.
Ethernet data packets received through front panel ports into a common
canonical format that allows the SmartSwitch ASIC Engine to determine the
proper destination port. The ENIB/FENIB also convert data packets from the
common canonical format back to Ethernet data packets for transmission out
front panel ports.
i960
Processor
Processor
Smart
Switch
ASIC
Switch
ASIC
I
N
B
N
B
1
2
INB
NIB
NIB
SMB 1
SMB 10
DC/DC
Converter
Converter
Diagnostic
Controller
Controller
ENIB
ENIB
ENIB
ENIB
ENIB
ENIB
FENIB
FENIB