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ERX Overview
Figure 11: Representative Line Module
Midplane
connectors
Ejector
Status LEDs
Board reset
button
NMI button
g013737
Packet Classification
Most line mod ules support packet classification on ingress; some non-ASIC line
module
s do n ot. A classification engine on the line module matches specific
fields (such as source and destination IP address, source and destination p ort,
and protocol), the ingress IP interface, layer 2 fields, o r some combination
of the
se against u s er-co n fig ured filters at wire speed.
I/O Modules
Most line modules have a corresponding input/output (I/O) module that provides
the ph
ysical interconnection to the ne twork. Insert each I/O module into the
back of the system, directly behind its corresponding line m o dule.
For information abou t wh ich line m odules pair with which I/O modules, see the
ERX Module Guide. See Fig ure 2, Figure 4, and Figure 6 for locations. For details
about
installing I/O modules, see “Installing Modules” on p age 35.
ERX Modules 15