Toa RM-200SF - Page 88

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Chapter 3 INSTALLATION AND SETTING PROCEDURES (HARDWARE)
To other
switching hub
To other
switching hub
Main line
: LAN Link
: Control line
VX-3000F
VX-3000F
VX-3000F
VX-3000F
Switching hub (B-2)
Switching hub (B-1)
Switching hub (A-2)
Switching hub (A-1)
5.1.1. Redundant configuration of switching hubs
In the connection example below, the LAN Link A and B connectors of each unit are individually connected
to different switching hubs. By using switching hubs with failure status output function, if any one of switching
hubs fails or the main line breaks, such a failure can be detected.
Notes
• Upto7-levelcascadeisallowedforswitchinghubconnections.
• Afterconnectioncompletion,reactivatetheVX-3000FbypressingtheResetkeyonitsfrontpanel.
• Performspanningtreesettingwithinswitchinghubs.Forthesetting,contactyournetworkadministrator.
• The "External failure input" function needs be assigned to the unit's control input terminal to which the
switching hub's failure status output is connected. (For details, see the separate Setting Software Instructions,
"EVENT SETTINGS.")
Note: Contact your TOA dealer for more information on switching hubs.