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Assistance with configuring a PoE switch setup.

Assistance with configuring a PoE switch setup.

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GodZenik
Member
242
10-15-2016, 04:11 AM
#1
Hello, I'm here to assist you with your setup. You have a 2009 48-port Cisco Catalyst PoE switch and you're planning to connect all your home devices directly to it for internet access. Your PC tested fine, but you're concerned about power over Ethernet (PoE) compatibility. Devices like TVs, streaming boxes, gaming consoles, and computers typically don't need PoE unless they specifically require it. Since your setup is mostly plug-and-play, you likely won't need to adjust the PoE settings on each port. Just ensure all connected devices are indeed not dependent on PoE for power delivery. Let me know if you need further clarification!
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GodZenik
10-15-2016, 04:11 AM #1

Hello, I'm here to assist you with your setup. You have a 2009 48-port Cisco Catalyst PoE switch and you're planning to connect all your home devices directly to it for internet access. Your PC tested fine, but you're concerned about power over Ethernet (PoE) compatibility. Devices like TVs, streaming boxes, gaming consoles, and computers typically don't need PoE unless they specifically require it. Since your setup is mostly plug-and-play, you likely won't need to adjust the PoE settings on each port. Just ensure all connected devices are indeed not dependent on PoE for power delivery. Let me know if you need further clarification!

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Nessa106
Member
169
10-15-2016, 12:02 PM
#2
The switch won’t supply POE power when a device isn’t requiring it. There’s a mechanism to verify if a device needs POE before any power is delivered. I’ve tested several 48-port POE switches, connecting nearly all of my devices without issues.
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Nessa106
10-15-2016, 12:02 PM #2

The switch won’t supply POE power when a device isn’t requiring it. There’s a mechanism to verify if a device needs POE before any power is delivered. I’ve tested several 48-port POE switches, connecting nearly all of my devices without issues.

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Apocalyps80
Junior Member
2
10-15-2016, 02:02 PM
#3
Approximately. The switch avoids energizing devices that aren't required, but it still has a cap on the power it can deliver, so check the manual for port limits based on PoE equipment. For instance, in my office there are 256 ports, yet only sufficient power for 192 (about three-quarters) deskphones. Managed switches might need you to log in and turn on individual ports manually.
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Apocalyps80
10-15-2016, 02:02 PM #3

Approximately. The switch avoids energizing devices that aren't required, but it still has a cap on the power it can deliver, so check the manual for port limits based on PoE equipment. For instance, in my office there are 256 ports, yet only sufficient power for 192 (about three-quarters) deskphones. Managed switches might need you to log in and turn on individual ports manually.

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Darkeos
Senior Member
538
10-15-2016, 11:31 PM
#4
Enable Switch# conf t Switch(config)# interface <interface ID> Switch(config-if)# power inline never Switch(config-if)# end Switch# copy run start I believe this should work. It's been a long time since I worked with Cisco. Also, you likely don't need to make any changes because POE follows established guidelines, and the switch will verify if the device requires POE. Regarding your concern, anything connected to conductive materials can pose a surge risk, so protect those devices—like the POE switch and TV. That way, as long as they meet standards, you should be fine.
D
Darkeos
10-15-2016, 11:31 PM #4

Enable Switch# conf t Switch(config)# interface <interface ID> Switch(config-if)# power inline never Switch(config-if)# end Switch# copy run start I believe this should work. It's been a long time since I worked with Cisco. Also, you likely don't need to make any changes because POE follows established guidelines, and the switch will verify if the device requires POE. Regarding your concern, anything connected to conductive materials can pose a surge risk, so protect those devices—like the POE switch and TV. That way, as long as they meet standards, you should be fine.

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CatsGoMeow123
Member
158
10-16-2016, 05:51 AM
#5
The above works. The devices negotiate power, you shouldn't receive power if the NICs don't negotiate it. Probably, a default configuration has a flat network which should behave similarly to a normal unmanaged switch. You probably want to put spanning-tree portfast on all of those unless you like waiting for STP listening and learning states.
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CatsGoMeow123
10-16-2016, 05:51 AM #5

The above works. The devices negotiate power, you shouldn't receive power if the NICs don't negotiate it. Probably, a default configuration has a flat network which should behave similarly to a normal unmanaged switch. You probably want to put spanning-tree portfast on all of those unless you like waiting for STP listening and learning states.

W
50
10-22-2016, 08:45 PM
#6
Search for a tool or software that lists ports and lets you set up each one individually.
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Willdabeast314
10-22-2016, 08:45 PM #6

Search for a tool or software that lists ports and lets you set up each one individually.

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master_scope
Posting Freak
794
11-10-2016, 08:26 AM
#7
You have a CLI to control your switch. For PoE, just operate it as usual—it will handle PoE requirements without causing damage.
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master_scope
11-10-2016, 08:26 AM #7

You have a CLI to control your switch. For PoE, just operate it as usual—it will handle PoE requirements without causing damage.

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maithyle265
Junior Member
9
11-10-2016, 03:41 PM
#8
Great! Thank you all for your support. I felt a bit anxious about the change, but your reassurance gave me confidence that everything will work fine. Appreciate your help!
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maithyle265
11-10-2016, 03:41 PM #8

Great! Thank you all for your support. I felt a bit anxious about the change, but your reassurance gave me confidence that everything will work fine. Appreciate your help!