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To decrease Virtual controller failover sysc time

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  • 1.  To decrease Virtual controller failover sysc time

    Posted Dec 28, 2015 12:42 PM

    Hi,

    I have IAP 205 VC with 20 IAP with latest AOS.

    While Master IAP goes down and new IAP become master, i observed that wireless user connection drop and 5-6 ping drop. Once master elected wireless client asking for credential (Guest self registration)

     

    How can we decrease master failover sync time/ping drop or how to avoid existing wirless user connection drop?

     

    Thanks..


    #AP205


  • 2.  RE: To decrease Virtual controller failover sysc time

    EMPLOYEE
    Posted Dec 28, 2015 12:52 PM

    The connection for ALL users, or only the users that are connected to the VC drops?



  • 3.  RE: To decrease Virtual controller failover sysc time

    Posted Dec 28, 2015 01:03 PM

    Hi Joseph,

    I observed that for all users and i was pinging VC IP from my desktop system.

     

    Thanks..



  • 4.  RE: To decrease Virtual controller failover sysc time

    EMPLOYEE
    Posted Dec 28, 2015 01:20 PM

    Is your WLAN using a  VC-Assigned VLAN?  In that case, all of the guest traffic is tunneled to the VC, so there has to be a VC election to decide who will handle and nat that traffic.  The minimum failover time should be 10 seconds, really.  If you are achieving 5 seconds, that is good.

     

    If you were using 802.1x and you had a network-assigned VLAN, the AP a user is assigned to would just keep passing traffic, even during the VC election, because the data traffic would be truly distributed.

     



  • 5.  RE: To decrease Virtual controller failover sysc time

    Posted Dec 28, 2015 09:52 PM

    Hi,

     

    I am not using VC assigned vlan for WLAN.

    I hv 2 SSID Employee(vlan 10) and Guest(vlan 20). My network L3 switch leasing IP address for WLAN.

    IAP is getting IP address from vlan 10.

     

    Do i need to configure saperate management vlan for IAP?

     

    Thanks...



  • 6.  RE: To decrease Virtual controller failover sysc time

    EMPLOYEE
    Posted Dec 28, 2015 11:41 PM

    A best practice is to have a separate management VLAN for your IAP, yes.