PowerConnect 6248 P do not stack with 12 m cable

I try to superimpose 2 PCT6248P via the cx - 4 12 m stacking cable and it does not work. the two starts as master 1/7 and do not see each other, even if it is started before the other when I use the stacking of 1 m cx-4 cables, they work perfectly, even on reboot if I replace the cable of 1 m with 12 m stacking cable they remain in the configuration of the battery until they have restarted. the two run the firmware version 3.3.10.3 I changed the cables to check that they are not the issue. Help?

Maximum cable length that can be used for stacking is 3 meters.

www.Dell.com/.../pwcnt_stacking_switches.pdf

Tags: Dell Switches

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