I am planning for a VoIP install and I need to make sure we have enough power on the 3850 switch to support the phones. The phones consume 13 watts max, switch is 48 ports, there will be a phone plugged into each port, available watts per switch module in 5 switch stack is 420 watts, and each switch has one 715 watt power supply. How do I calculate how much power I will need to support all of the phones? Is it as simple as multiplying the phone wattage by number of ports and comparing to available watts for the switch module?
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Hello I have 802.1x configured on my Cat 3560 switch stack. For the most part everything works fine but I keep running into users who have printers that go into sleep mode and then the port reverts to a dead default vlan99. When the user goes to print to the printer it is unable to come out of the default vlan99. Below is how I have the port configured. Has anyone else experienced this problem? If so how did you fix it? interface GigabitEthernet1/0/1 switchport access vlan 99 switchport mode access authentication order dot1x mab authentication priority dot1x mab authentication port-control auto authentication periodic authentication timer reauthenticate server mab dot1x pae authenticator dot1x timeout server-timeout 30 dot1x timeout tx-period 3 dot1x max-req 3 dot1x max-reauth-req 3 spanning-tree portfast spanning-tree bpduguard enable
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