Yealink DHCP Issue

[J1mb08agg1n5]

Hi all.

 

Have a small issue trying to deploy one particular Yealink SIP-T30P. Network is VLAN'd, for simplicity default VLAN is 1, voice VLAN is 50. L3 switch is configured as the default gateway and IP helper is pointing towards DHCP server situated in VLAN1. It can acquire IP in VLAN1 but not for VLAN50. Initial thought was checking that ports are configured correctly which I have verified that they are. As I test, I unplugged a working phone and plugged the cable into the non-working phone, still no IP which I can't fathom why. Port hasn't been changed and settings on the phone are the same, so can't explain why one works and one doesn't but it will work when I assign it to VLAN1.

 

Any suggestions or troubleshooting ideas?

[Davit2005]

Try reseting the phone that is not working back to Factory defaults. I cannot understand as you why it is not picking up IP address. Maybe phone itself is faulty??