The phone connected on switch-B is not picking the IP address from the router. We can see the Phone mac up-to switch-A but nothing on the router at all.
I have cleared the mac-address table for the phone on both switches. Defaulted the port. Shut it. reconfigured just for voice vlan. unshut. still mac only shows upto switch-A. Ran a debug for DHCP no activity or request from the phone at all. nothing in the router ARP
There are other phones on the switch B which are working fine.
Is it a faulty phone or some other issue. Any help highly appreciated.
as a test configure DHCP on the router with option 150 and run a span port the access port the phone is connected to to the switch and see if you can pich up a DHCP request using wireshark. then move up and span the link between switch and router.
also check the phone;s settings and see if there isnt a static IP configured on it.
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