Enterasys 9e423-24 Mode D'Emploi
3-1
Chapter 3
Operation
The 9E423-24 module is a 25 port device. Two front panel RJ-71 Telco connectors
support 24 10BASE-T ports, each port being a separate collision domain with the
25th port connecting to INB2.
support 24 10BASE-T ports, each port being a separate collision domain with the
25th port connecting to INB2.
As shown in Figure 3-1, Ethernet Network Interface Blocks (ENIBs) convert data
packets received from any of the 10BASE-T ports 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.
packets received from any of the 10BASE-T ports 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
Processor
Smart
Switch
ASIC
Switch
ASIC
ENIB
ENIB
ENIB
I
N
B
N
B
1
2
INB
NIB
NIB
SMB 1
SMB 10
DC/DC
Convertor
Convertor
Diagnostic
Controller
Controller
ENIB
ENIB
ENIB
24
Ethernet
Ports
Ethernet
Ports