Lync Phone Edition - Registrar FQDN cannot be found
Question
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Hi,
I have finally got Lync phone edition devices into a separate VLAN. All working ok, except when logging in they pause for about 5-10 seconds with error "Registrar FQDN cannot be found". They then sign in and work perfectly. Option 120 is setup on DHCP and was working fine when they were in the same VLAN as the server. I am using an IP Helper to allow the phones to get their DHCP settings for our DHCP server.
Our Lync Servers (FE and Edge Internal interface) are in VLAN 10 with subnet 192.168.10.0/24.
Our DHCP is yet to be moved into our server VLAN and is currently in VLAN 0 10.81.108.0/22.
Our Lync Phone devices are in VLAN 20 192.168.20.0/24.When I run DHCPUtil.exe -emulateclient on another computer in the 10.81.108.0/22 subnet, I get the following result:
Result: Success
DHCP Server : 10.81.108.11
SIP Server FQDN :
Certificate Provisioning Service URL : https://SR-LC-01.OPG.INTERNAL:443/CertProv/CertProvisioningService.svcIt doesn't appear to be receiving the option 120 information from our DHCP server. But this is setup as follows:
The other DHCP options required for the phones are being pulled down successfully, but this one appears to be failing. Please help!
Many Thanks,
Andrew
