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Old 08-19-2016, 05:08 AM
citycritmgmt citycritmgmt is offline
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Join Date: Dec 2011
Posts: 2
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Just FYI for everyone out there. If you are in rear port mode SPB with a rear cable on ports 33-40, you need to do a phased upgrade from 10.2.1 even though the documentation says it's a direct upgrade.

10.2.1 -> 10.3.3 -> 10.4.1 or 10.2.1 -> 10.4.0 -> 10.4.1

If you don't, you get SPB flapping on the rear trunks. This bit us and we're currently working with support on it.
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