We have a 4510 (WS-C4510R+E, with WSX45SUP7-E) with redundant supervisors and dual 6000W power supplies (PWR-C45-6000ACV) currently running at 110 volts. We are installing four Nema L6-20 receptacles to be able to have full PoE and redundancy across our power supplies.
Will it be possible to cut over from 110 to 208volts while the switch is running, by unplugging the old cords and plugging in the new cords, one by one?
Or, will we have to shut down the switch entirely, plug all new power cables in, and then power the switch back up?
As the 4500 power supplies are hot-swapable, you can just power down one supply, swap power source and re-energize. Await green leds and do the other supply. I have done just this on a few occasions. Everything on 208 now.
Thanks Dave. Since each power supply has two 3000VA inputs, can I do each input 1 by 1, or would you recommend shutting both inputs to one power supply, cut that entire power supply over and wait til green?
I would do one supply, both inputs together. If I recall correctly, the supplies can run on a split voltage (at reduced power levels) but its just as easy to plug into A and B feeds. don't they draw 18 Amps plus on 110, which by NEC rules required 2 ports.
The 6000 W AC-input power supply should not be used in mixed-voltage configurations. All the inputs in a chassis must be at the same voltage (110 VAC or 220 VAC). That said you will need to have both power supplies at the voltage at the same time, beacuse the two power supplies must have identical inputs and all inputs must be at the same voltage. If the input voltages are mismatched one of the power supplies will go into error-disable state.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.