Users Guide

• User blocking
• IP address blocking
• Number of login attempts allowed
• Timespan for the lockout failure counts to occur
• Lockout penalty time
• To enable user blocking feature, use:
racadm config -g cfgRacTuning -o cfgRacTuneUserBlkEnable <0|1>
• To enable IP blocking feature, use:
racadm config –g cfgRacTuning –o cfgRacTuneIPBlkEnable <0|1>
• To specify the number of login attempts, use:
racadm config –g cfgRacTuning –o cfgRacTuneIpBlkFailCount
• To specify the time span within which, lockout fail count failures must occur, use:
racadm config –g cfgRacTuning –o cfgRacTuneIpBlkFailWindow
• To specify value for lockout penalty time, use:
racadm config –g cfgRacTuning –o cfgRacTuneIpBlkPenaltyTime
For more information about these objects, see the Chassis Management Controller for PowerEdge VRTX RACADM
Command Line Reference Guide available at dell.com/support/manuals.
Understanding Redundant CMC Environment
You can install a standby CMC that takes over if your active CMC stops functioning. The redundant CMC may be pre-
installed or can be installed later. To make sure full redundancy or best performance, it is important that the CMC
network is properly cabled.
Failovers can occur when you:
• Run the RACADM cmcchangeover command. See the cmcchangeover command section in the Chassis
Management Controller for PowerEdge VRTX RACADM Command Line Reference Guide available at dell.com/
support/manuals.
• Run the RACADM racreset command on the active CMC. See the racreset command section in the Chassis
Management Controller for PowerEdge VRTX RACADM Command Line Reference Guide
available at dell.com/
support/manuals..
• Reset the active CMC from web interface. See the Reset CMC option for Power Control Operations that is
described in Executing Power Control Operations.
• Remove the network cable from the active CMC.
• Remove the active CMC from the chassis.
• Initiate a CMC firmware flash on the active CMC.
• Have an active CMC that is no longer functional.
NOTE: In the event of a CMC failover, all iDRAC connections and all active CMC sessions are logged off. Users
with logged-off sessions must reconnect to the new active CMC.
About Standby CMC
The standby CMC is identical to and is maintained as a mirror of the active CMC. The active and standby CMCs must
both be installed with the same firmware revision. If the firmware revisions differ, the system reports as “redundancy
degraded”.
The standby CMC assumes the same settings and properties of the active CMC. You must maintain the same firmware
version on both the CMCs, but you do not have to duplicate configuration settings on the standby CMC.
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