Meru Technical Note - How To Find the System-ID of the backup controller

[nmichael]

Description

How To Find the System-ID of the backup controller

Scope

KB ARTICLE TYPE: Troubleshooting

RELATED PRODUCTS: All controllers 

RELATED SOFTWARE VERSIONS: 5.x and above

KEYWORDS: System-ID, backup
Solution

1. Sometimes, it is required to obtain the System-ID of the backup controller while the controller is in backup/slave/passive state.

2. The backup controller does not show any o/p. for the command "show controller" since all Meru services (except nplus1) are shut-down.

3. Following is the procedure to do so (One needs to just run "systemid" in root):

cntrlr-VDS(15)# log root

Password:
-bash-3.2# sys
sys-unconfig     sys-unconfig.sh  sysctl           sysid.pl         syslogd          systemid
-bash-3.2# systemid
System Id : COMPOSITE=B1F0426FE424
-bash-3.2# exit
logout
cntrlr-VDS(15)# show controller
Unable to establish communication with configuration server
cntrlr-VDS(15)# show nplus1
--------------------------------------------------------------------------------------------------
            Current State : Passive
       Non-Revertive Mode : Enable
    Wait to Restore (WTR) : 8 minutes
           Master Timeout : 5 keepalives
                 Slave IP : 172.18.97.212
           Slave Hostname : cntrlr-VDS
             License Type : Demo
 License Usage (Used/Tot) : 1/1
--------------------------------------------------------------------------------------------------
                       Master Controllers
                                                                         Missed
            Hostname       IP Address  Admin    Switch  Reason           Adverts  SW Version
--------------------------------------------------------------------------------------------------
              MC1500    172.18.97.211  Enable   Yes     -                0        5.1-75
cntrlr-VDS(15)# configure terminal
cntrlr-VDS(15)(config)# nplus1 st
start  stop
cntrlr-VDS(15)(config)# nplus1 stop
Making this a normal controller. Starting WLAN services....
Starting WLAN services:  [########################################] cntrlr-VDS(15)(config)#
cntrlr-VDS(15)(config)#
cntrlr-VDS(15)(config)# exit
cntrlr-VDS(15)# show controller
Global Controller Parameters

Controller ID                                         : 1
Description                                           : controller
Host Name                                             : cntrlr-VDS
Uptime                                                : 00d:23h:53m:40s
Location                                              :
Contact                                               :
Operational State                                     : Enabled
Availability Status                                   : Online
Alarm State                                           : No Alarm
Automatic AP Upgrade                                  : on
Virtual IP Address                                    : 172.18.97.212
Virtual Netmask                                       : 255.255.255.0
Default Gateway                                       : 172.18.97.1
DHCP Server                                           : 172.18.1.6
Statistics Polling Period (seconds)/0 disable Polling : 60
Audit Polling Period (seconds)/0 disable Polling      : 60
Software Version                                      : 5.1-75
Network Device Id                                     : 00:90:0b:1c:5a:84
System Id                                             : B1F0426FE424
Default AP Init Script                                :
DHCP Relay Passthrough                                : on
Controller Model                                      : MC1500
Country Setting                                       : India
Manufacturing Serial #                                : xxxxxxxxxxxx
Management by wireless stations                       : on
Controller Index                                      : 0
Topology Information Update                           : off
FastPath Mode                                         : off
Bonding Mode                                          : none
AP150 Vcell                                           : disable
DFS                                                   : disable
Station Aging Out Period(minutes)                     : 2
Roaming Domain State                                  : enable
Associated Station Max Idle Period                    : 2000
cntrlr-VDS(15)#

Internal Notes
TICKET REFERENCE: 4062-8366492