Appendix A: Multiple Chassis Local Connect
Setting Up and Powering Up Multiple Chassis
92 | SmartBits 600x/6000x Installation Guide
Assign an IP Address to Each Smartbits Chassis
Each chassis must have its own IP address and be connected to a LAN or WAN (see
“Procedure 8: Set the IP Address” on page 41, and Figure A-4 on page 93).
Connect Multiple Synchronized Chassis
The connected primary controller and dependent controller chassis may be any
combination of SmartBits chassis, totaling up to eight chassis. The maximum number of
ports to configure is 768 ports (eight SmartBits 6000x chassis x 12 slots x 8-port LAN-
3100A modules).
For information regarding the configuration of more than eight SmartBits chassis, refer to
“Multi-chassis Extension Unit” on page 97.
A dependent controller may also be a master controller if it is a SmartBits 2000 chassis
and is also used in a stacking configuration as shown in Figure A-5 on page 95.
Important: The following rules must be followed to ensure proper multiple chassis
connections, synchronization, and correct test results. Failure to comply with these
procedures will result in faulty tests results such as frame loss and out of sequence frames.
• When using a multiple chassis configuration that contains SmartBits 600x/6000x
chassis, you must use a synchronous CAT-5 straight-through (not crossover) cable to
connect the chassis together. (Refer to Table 2-1 on page 35.) The use of the
synchronous cable is required in order for overall test results to be accurate (not just
the latency test results, but all test results).
• If you are connecting multiple SmartBits chassis locally with CAT-5 UTP cables for
use with any SmartBits application, you must synchronize all chassis with the
procedure presented in this document.
• The synchronized clock and pulse signals passing through the connected chassis
require careful sequential powering up. Failure to do so will cause random errors and
incorrect test results.
• To maintain synchronization, the dependent controller you are using must always be
connected to the primary controller chassis through one or more dependent
controllers as needed, even if you are not using ports in the primary chassis.
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