Catalyst 6506-E Chassis Power Supply Interaction

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Aug 6th, 2010
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How do the WS-CAC-6000 power supplies interact with each other and the chassis if one power source is on UPS of each power supply and the other power source is on normal street power? Can a power spike from the non-UPS side carry through onto the other power supply or into the chassis?

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gephelps Tue, 08/10/2010 - 05:32
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The power supply itself will not know if the feed is on a UPS or not.

For the power spike issue, since the feed goes to both power supplies then a spike could potentially take out both supplies. If you lost power on the street side then it would affect both power supplies and the chassis may not have enough power. If the UPS can only supply one power supply total then I would put both feeds from the UPS into one power supply.

In general a power spike should take out the expendable power supply before the rest of the components in the chassis.


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