CISCO IP PHONES ARE NT REGISTERING WHEN CONNECTED TO CISCO SWITCHES 3850

[Tosin Ola]

Pls, guys, I have a challenge which is giving me concern. Our company plan to change some switches which are End Of Life(switch 2560, 3560 and 3750 series) with new cisco switch 3850 series, I configured these new switches using the same config file on the existing switches, after configuration, I deployed the new switches, I noticed the cisco IP PHONES are not registering when I connected them to the new switches 3850 series but they are working perfectly on the existing switches. Pls, help me out on this issue.

[Reza Sharifi]

Are the new 3850 switches POE? What is the model number? Can you post "show run" from one of them?

HTH 

[Tosin Ola]

Yes they are POE with model no ws-c3850-48p-s

[Reza Sharifi]

Can you post "sh run" and point out what port has a phone connected to?

[Tosin Ola]

This is what is configured on all the switch interfaces

interface GigabitEthernet1/0/16
switchport access vlan 3
switchport mode access
switchport voice vlan 60
spanning-tree portfast edge
spanning-tree bpduguard enable
spanning-tree guard root

[Georg Pauwen]

Your output shows two voice Vlans, is that a typo ?

interface GigabitEthernet1/0/1
switchport access vlan 15
switchport mode access
switchport voice vlan 70
spanning-tree portfast edge
spanning-tree bpduguard enable
spanning-tree guard root

interface GigabitEthernet1/0/16
switchport access vlan 3
switchport mode access
switchport voice vlan 60
spanning-tree portfast edge
spanning-tree bpduguard enable
spanning-tree guard root

[Leo Laohoo]

Aside from what Georg has pointed out (voice VLAN 60 vs voice VLAN 70), post the complete output to the command "sh vlan".

[Oleg Volkov]

Hi.

Do you use voice vlan?

Check CDP data and MAC address table.

[Tosin Ola]

The poe switch powered the phones.
I do not have the show run for it but this is what was configured on all the ports

interface GigabitEthernet1/0/1
switchport access vlan 15
switchport mode access
switchport voice vlan 70
spanning-tree portfast edge
spanning-tree bpduguard enable
spanning-tree guard root

[Leo Laohoo]

Let's start with the basic: Is the phone getting a valid IP address?

[Tosin Ola]

No. The message it displayed is phone not register

[Oleg Volkov]

It may be call manager not reachable.

please describe your network.

[Leo Laohoo]

Is the phone getting a valid IP address or not?

[Tosin Ola]

The phone is not getting any valid IP address

[Oleg Volkov]

Where your DHCP server?