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Transition Master to Slave : IAP lose config ?

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  • 1.  Transition Master to Slave : IAP lose config ?

    Posted Mar 22, 2016 11:47 AM

    Hi all,

    I have two IAP's. IAP 205 and 225.

    I am testing the quick loss of the Master IAP, and the transparent failover of virtual controller. So i unplugged the master to simulate the loss, the other IAP become master.

    When the IAP is re-plugged, as it's configured as master prefered, it returns to master state. The other IAP reboot and came up as slave. This is a normal behavior for me.

     

    The problem is connectivity between master and slave is lost, i can't see slave on VC and i can't reach master from slave.

     

    I think that slave came up with default wired profiles so it can't reach master because it has wired ports configured access when it's trunk on switch.

    I have two solutions to retablish connectivity :

    - switch config on switch to access and then to trunk when slave has sync with master

    - reload slave IAP (i don't understand here why it doesn't work at the first reboot)

     

    Both are annoying when u want transparent failover.

    Is there a trick or something i miss on configuration to avoid this ?

    Thanks for help

     



  • 2.  RE: Transition Master to Slave : IAP lose config ?

    EMPLOYEE
    Posted Mar 22, 2016 11:51 AM

    Which version of IAP is this?

     



  • 3.  RE: Transition Master to Slave : IAP lose config ?

    Posted Mar 22, 2016 11:54 AM

    IAP-205 & IAP-225

    Version : 6.4.2.6-4.1.1.11



  • 4.  RE: Transition Master to Slave : IAP lose config ?

    EMPLOYEE
    Posted Mar 22, 2016 11:58 AM

    For the IAP that does not join back, can you paste in the output of "show log system"?



  • 5.  RE: Transition Master to Slave : IAP lose config ?

    Posted Mar 22, 2016 12:58 PM

    After reboot :

    slave_log.png



  • 6.  RE: Transition Master to Slave : IAP lose config ?

    EMPLOYEE
    Posted Mar 22, 2016 01:01 PM

    What is .150?



  • 7.  RE: Transition Master to Slave : IAP lose config ?

    Posted Mar 22, 2016 01:08 PM

    The end of IP address.

    .150 is the master

    .149 is the slave



  • 8.  RE: Transition Master to Slave : IAP lose config ?

    EMPLOYEE
    Posted Mar 22, 2016 01:09 PM

    Is that the first AP or the second AP?  Who does it say is the master?



  • 9.  RE: Transition Master to Slave : IAP lose config ?

    Posted Mar 22, 2016 01:12 PM

    .150 is the first IAP, configured as prefered master. .149 is the other.

    .150 is the one i unplugged for testing.



  • 10.  RE: Transition Master to Slave : IAP lose config ?

    EMPLOYEE
    Posted Mar 22, 2016 02:57 PM

    It correctly says that it is the master.  You probably would need the ouput of 'show log system' on the -preferred master to see if that access point is joined by the non-preferred master.  If not, you should upgrade to the IAP code (4.2.3) that came out today to see if it makes a difference.

     



  • 11.  RE: Transition Master to Slave : IAP lose config ?

    Posted Mar 23, 2016 04:36 AM

    The Slave isn't reachable. The configuration isn't synchronised, wired ports profile on slave are on access mode when it's trunk on switch.

    Can the iap slave retains its last config at reboot ?

     

    I will try the update, where can i found the last IAP code ?

     

    Thx



  • 12.  RE: Transition Master to Slave : IAP lose config ?

    EMPLOYEE
    Posted Mar 23, 2016 06:14 AM

    You have a wired port profile configured?  What does that look like?

     



  • 13.  RE: Transition Master to Slave : IAP lose config ?

    Posted Mar 23, 2016 06:24 AM

    1.png

    vlan 10 is mgmt vlan

    The others are assigned to wifi clients depending on the 802.1x authentication and SSID.

    Switch side is configured in the same way.



  • 14.  RE: Transition Master to Slave : IAP lose config ?

    EMPLOYEE
    Posted Mar 23, 2016 06:31 AM

    Okay.  PM me the IAP models and your email and I will send you the new code.

     



  • 15.  RE: Transition Master to Slave : IAP lose config ?

    Posted Mar 23, 2016 11:19 AM

    Upgrade done but the problem still present.

    I need to reload slave every time.



  • 16.  RE: Transition Master to Slave : IAP lose config ?

    EMPLOYEE
    Posted Mar 23, 2016 11:21 AM

    You should open a TAC case so that we can get the specifics of your environment.  



  • 17.  RE: Transition Master to Slave : IAP lose config ?

    Posted Mar 23, 2016 11:24 AM

    Ok thx