Hi
if ports shutting down something else is wrong ,it shiuldnt do that
i just tested it to check on a 3650 as below results , 30w port running 7821
Gi1/0/40 auto on 3.2 IP Phone 7821 1 30.0
Set the port to 4000kw lowest i can go back from 30000kw
Gi1/0/40 auto on 4.0 IP Phone 7821 1 4.0
sh int g1/0/40
GigabitEthernet1/0/40 is up, line protocol is up (connected)
interface GigabitEthernet1/0/40
switchport access vlan x
switchport mode access
switchport voice vlan x
ip access-group PERMIT-ANY in
power inline auto max 4000 --------------------------Here
authentication control-direction in
authentication event fail action next-method
authentication event server dead action reinitialize vlan x
authentication event server dead action authorize voice
authentication event server alive action reinitialize
authentication host-mode multi-auth
authentication open
authentication order mab dot1x
authentication priority dot1x mab
authentication port-control auto
authentication periodic
authentication timer reauthenticate server
authentication timer inactivity server dynamic
authentication violation restrict
mab
dot1x pae authenticator
dot1x timeout tx-period 10
auto qos trust dscp
spanning-tree portfast
spanning-tree bpduguard enable
service-policy input AutoQos-4.0-Trust-Dscp-Input-Policy
service-policy output AutoQos-4.0-Output-Policy
ip dhcp snooping limit rate 7
end
what version are you running on the switch ? are you giving it enough power to stay up , try increasing it ....
