Author Topic: Making Phone Name Show Up in DHCP?  (Read 1545 times)

Offline AzJoe

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Making Phone Name Show Up in DHCP?
« on: February 22, 2019, 12:15:48 PM »
Is there a way to get a phone to register a name when it grabs a DHCP server address?  I am using Windows 2012 R2 Server with the DHCP service.  All the phones show up as having taken an address but they don't have a name.  Rather than doing DHCP Reservations, I'd just like to give the phone a name during setup and let it register that name with the server.


Offline acejavelin

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Re: Making Phone Name Show Up in DHCP?
« Reply #1 on: February 22, 2019, 02:00:57 PM »
I don't see how that would be possible... The phone doesn't know it's name or extension until well after it gets it's DHCP lease.

Offline VinceWhirlwind

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Re: Making Phone Name Show Up in DHCP?
« Reply #2 on: February 24, 2019, 08:20:38 PM »
A name isn't an alternative to an IP address.
A Windows DHCP server will (optionally) send a host entry to DNS after its lease offer has been accepted.
You have to make sure "Enable DNS dynamic updates..." is ticked on the Scope Properties.
I guess this might also depend on what information is included in the DHCP Request from the phone.

Offline Dogbreath

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Re: Making Phone Name Show Up in DHCP?
« Reply #3 on: February 25, 2019, 05:18:48 AM »
If this is for help with network-level troubleshooting, bear in mind that handsets report their DN with LLDP so you can see DNs in the LLDP neighbours table on your switch.

Offline AzJoe

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Re: Making Phone Name Show Up in DHCP?
« Reply #4 on: February 26, 2019, 11:09:14 AM »
I was trying to find a way to distinguish them in the DHCP Lease list.  I was hoping there was a parameter I could set on the phone that would be handed off to the DHCP Server so it would register a name with the IP.  Thanks for all of the info.

Offline VinceWhirlwind

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Re: Making Phone Name Show Up in DHCP?
« Reply #5 on: February 26, 2019, 03:59:08 PM »
What you are looking for is the information kept by DNS.
But when you say "name" I am thinking you mean their extension number?
You should look on your controller at the form called "All IP Telephones".


 

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