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c6509-E SUP720-3BXL: Что с NVRAM и как лечить?

Приветствую, столкнулся со следующим сюрпризом на одном из пришедших SUP720-3BXL:

 

System Bootstrap, Version 12.2(17r)S2, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 2004 by cisco Systems, Inc.
confreg write to NVRAM failed
environment write to NVRAM failed
environment write to NVRAM failed
Write to NVRAM addr failed
Cat6k-Sup720/RP platform with 1048576 Kbytes of main memory

Download Start
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Download Completed! Booting the image.
Self decompressing the image : ################################################################################################################################################################################################################################################################################################################################################################################# [OK]
environment write to NVRAM failed
Write to NVRAM addr failed

 

IOS: s72033_sp-ADVENTERPRISE_WAN-M

Похоже на подохший NVRAM, какие вариант ещё могут быть?

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Если загружается до конца, то erase nvram + wr должно помочь. Если нет - фен в руки.

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