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HP BL460 G7: Cisco 3020 replacement failure


HP BL460 G7: Cisco 3020 replacement failure



Not long ago I found out one of two Catalysts in my BL460 G7 has became dead. I received new Cisco from HP, copied running config from alive Cisco to the new one and tried to install it.

I saw very interesting thing: during boot everything was fine. After the new Catalyst finished booting all my blades have lost network connectivity. Some of them works under VMware ESXi, some - under Operation System directly. 


Config of this Cisco is very simple: one access-port and several trunks. Also STP is configured in pvst mode - may be this is the key? I have no ideas of what the reason of that failure can be. Any help is appreciated. Thanks in advance!