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New Member

Router# *Feb 1 10:53:25.459: %C6KPWR-4-DISABLED: power to module in slot 4 set off (New fabric sync sequence not supported)


I am using Cat6509-V-E chassis with redundant SUP-2T with ACE module. I am running

IOS version: bootdisk:s2t54-advipservicesk9_npe-mz.SPA.150-1.SY.bin

ACE version: 4.1

I installed ACE on module 4 & 1. But in both the cases i am getting the velow error message:


Router#                          *Feb  1 10:53:25.459: %C6KPWR-4-DISABLED: power to module in slot 4 set off (New fabric sync sequence not supported)

Router#                          *Feb  1 11:51:25.459: %C6KPWR-4-DISABLED: power to module in slot 1 set off (New fabric sync sequence not supported)


If i console in ACE it gives me the below output while booting (attached)...

Did anyone of you faced such issue? Kindly sugegst

Cisco Employee

Router# *Feb 1 10:53:25.459: %C6KPWR-4


A4(1.0) code. This is not a supported version on SUP2T(chassis hardware

being used by you). Please refer the following release notes which say:

The minimum required ACE30 module software version for Supervisor Engine 2T

support is A4(2.1a) or later. This ACE software version supports both

supervisor engine models: VS-S2T-10G and VS-S2T-10G-XL.

This is the reason for getting "New fabric sync sequence not supported"

messages. Therefore please upgrade ACE module to A4(2.1) in order to run it

on SUP2T. I would request you to seat this module in a supported SUP

hardware like SUP720. Once loaded, please upgrade to A4(2.1). Then you can

plug it back to the current SUP.

Following was the enhancement filed for SUP2T support:


It was supported finally in A4(2.1) upwards.

Hope this helps,


New Member

Re: Router# *Feb 1 10:53:25.459: %C6KP


Thanks for your reply. Your suggestion solved my issue..thanks a lot…

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