Technical data

N+1 Redundancy
© 2012 Meru Networks, Inc. Implementing Redundancy 99
 N+1 on an active slave—the master IP address and hostname are added to the
display
3000-1# show nplus1
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Current State : Active
Non-Revertive mode : Disable
Wait to Restore : 8 minutes
Master IP : 10.1.1.10
Master Hostname : 3000-1
Slave IP : 10.1.1.21
Slave Hostname : 3000-slave
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Reason
If Switch is No, describes why switch cannot be made:
 Down: Master has been disabled by the user
 SW Mismatch: The system director software is out of sync
(update the Master Controller).
 No Access: The Passive Slave was not able to access the
Master because it did not receive a copy of the
configuration. This is a rare message that occurs if show
nplus1 is executed almost immediately after adding a
controller.
 No Access: The Passive Slave was not able to access the
Master Controller. This occurs most frequently if a
replacement controller has not had access cleared using
the nplus1 access command.
 WTR Set: As an Active Slave transitions back to Passive
Slave this state is the first step in the WTR timer
countdown.
 WTR—Xs: After the WTR Set is reached, the timer counts
down, showing the number of seconds (s) remaining.
 Suspected Up: If N+1 service is stopped on the Master
when the controller is reachable via its IP, the Passive
Slave transitions to Active Slave (due to missing N+1
keepalives from its master), becomes the Active Slave
(with Master’s IP address), now detects that the Master
IP is reachable, and then transitions back to Passive
Slave with the reason as Suspected up.
Adverts
Number of consecutively missed (not received) advertisements
(a maximum of 5 triggers a failover if the Switch field is Yes).
SW Version The software version of System Director on the controller.
Field Description