SfB On-Prem and SfB Online Hybrid Setup Quick Guide

Hi All,

this is a Quick Guide to Skype for Business On-Prem and Online Hybrid Setup.
It is based on this TechNet article:

I assume your SfB On-Prem deployment is fully functional.

  1. First of all, you need to be sure to have these Internal DNS Records for every SIP Domain of your SfB On-Prem deployment



    0 0 443 sip.



    0 0 5061 sip.

  2. Connect to SfB Online via PowerShell (TechNet reference https://technet.microsoft.com/en-us/library/dn362795.aspx)
  3. Run this command to check the Tenant configuration (save output for documentation purpose)
  4. Run this command to enable Hybrid configuration on your Tenant
    Set-CsTenantFederationConfiguration -SharedSipAddressSpace $True
  5. Run this command on your On-Prem Front-End to check EDGE configuration, important settings are underlined
    Identity                               : Global
    AllowAnonymousUsers                    : True
    AllowFederatedUsers                    : True
    AllowOutsideUsers                      : True
    BeClearingHouse                        : False
    EnablePartnerDiscovery                 : True
    DiscoveredPartnerVerificationLevel     : UseSourceVerification
    EnableArchivingDisclaimer              : True
    EnableUserReplicator                   : False
    KeepCrlsUpToDateForPeers               : True
    MarkSourceVerifiableOnOutgoingMessages : True
    OutgoingTlsCountForFederatedPartners   : 4
    DnsSrvCacheRecordCount                 : 131072
    DiscoveredPartnerStandardRate          : 20
    EnableDiscoveredPartnerContactsLimit   : True
    MaxContactsPerDiscoveredPartner        : 1000
    DiscoveredPartnerReportPeriodMinutes   : 60
    MaxAcceptedCertificatesStored          : 1000
    MaxRejectedCertificatesStored          : 500
    CertificatesDeletedPercentage          : 20
    SkypeSearchUrl                         : https://skypegraph.skype.com/search/v1.0
    RoutingMethod                          : UseDnsSrvRouting

    If settings are not as above, run this command to set it correctly

    Set-CSAccessEdgeConfiguration -AllowOutsideUsers $true -AllowFederatedUsers $true -UseDnsSrvRouting -EnablePartnerDiscovery $true
  6. Run this command on your On-Prem Front-End to check existing Hosting Providers,

    find the one with ProxyFqdn = sipfed.online.lync.com

    Identity : Skype for Business Online
    Name : Skype for Business Online
    ProxyFqdn : sipfed.online.lync.com
    VerificationLevel : UseSourceVerification
    Enabled : True
    EnabledSharedAddressSpace : True
    HostsOCSUsers : True
    IsLocal : False
    AutodiscoverUrl : https://webdir.online.lync.com/Autodiscover/AutodiscoverService.svc/root
  7. If some settings are different from above, remove the existing Hosting Provider and run this command to create the correct one
    New-CSHostingProvider -Identity "Skype for Business Online" -ProxyFqdn "sipfed.online.lync.com" -Enabled $true -EnabledSharedAddressSpace $true -HostsOCSUsers $true -VerificationLevel UseSourceVerification -IsLocal $false -AutodiscoverUrl https://webdir.online.lync.com/Autodiscover/AutodiscoverService.svc/root

Now your hybrid configuration should work (if not, double check previous steps)

As always, I hope to help some of you.


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