Cisco C9200 switch and 7941 phones

[chrzan]

Hello,

              We are having a strange problem we installed a new Cisco C9200 switch to replace a bad 3560. Everything worked fine on old switch and everything is on new switch except one thing. We have Cisco 7941 ,7911, and 7906 phones that are not registering not getting a DHCP address. Our Cisco 881 and 7841 phones are working correctly. Are the older phones not compatible with new switch ? Thanks,

                                                            John

[Nithin Eluvathingal]

Have you checked the DHCP debugs.

I dont think there could be a compatibility issues between phone models you mentioned and  the 9200 switch. 

Reset the phone  network settings and try. also make sure you have right configures on the port. 

[chrzan]

We have another 9200 switch with lower firmware and phones work

[Leo Laohoo]

Upgrade the firmware to 17.3.4 and see if this fixes it.

[balaji.bandi]

we are not aware any issue, can you post both the switch configuration to look what is wrong ?

high level - as Long as Phone getting PoE  and boot, it should work as expected if the configuration ported correctly.

[Leo Laohoo]

What firmware is the 9200 running on?

[chrzan]

17.03.03