A It could be either or both. First thing u need to check is the amount or memory its got etc. and also the IOS that it has. It might have a very old IOS which might have bugs etc.please upgrade your IOS
2. "Is it possible with Cisco 5500 that automatically it reboots due to
some internal hardware/software issue, if yes how we can trap or monitor
A yes, as I mentioned it could be both. you need to check the RAM it has . Also please check the CPU on it. Is it spiking . IF the CPU has reached 100 constantly the device might crash and reboot itself.
3. "Can someone set schedule task in device so that device soft reboot it
self after specific days or period?"
A you can if you want to using "reload in". Need to check the command again. You can schedule when you want to reload the box.
4. "Who can help us in this regards?"
A. If you are asking help offline we can help here but if you want cisco to help then you need raise TAC case. You need to speak to you vendor about it if u bought the devices from a 3rd party reseller. however you must have maintenance and support as well for thsoe devices
I would personally see if I can do it directy from the box. There are tons of material online here as how to upgrade an IOS on the ASA. or you can speak to your vendor and they should assist you with this
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