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Cisco 1720 Stops routing

I just started at a new company about 2 months ago. We have a Cisco 1720 router that belongs to us for our T-1. The Cisco IOS is 12.0(3)T, which is older. All of the sudden in the last weed and a half it has stop routing traffic twice. I can't ping its interface, the only thing that makes it work again is shutting it off and turning it back on. Any ideas?

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Mad_Jasper

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j0s3ph

ASKER

Getting the support is what I was working on yesterday. I think that the 12.0(3)T IOS is from Apr 1999 if I am not mistaken. I will be upgrading this within the next week. I also recently replaced the battery on our APC UPS. There are multiple devices on it, but I am wondering if there is any chance that might be causing the problem. I do know that there are many exploits available to attackers with the IOS I have in my router though.

fm250

Sometimes it is because of the hardware itself especially if it gets hot.

calvinetter

IOS 12.0(3)T ?! Wow, that's quite ancient. Agree that you should upgrade your IOS if at all possible. There are several DoS (Denial of Service) vulnerabilties & bugs for an IOS version this old. That may very well be why you're getting traffic stopped periodically.
For security problems, see the following:
http://www.cisco.com/en/US/products/products_security_advisories_listing.html

Just be aware that the newer the IOS version, the higher the DRAM & flash memory requirements are. Also, the more features an IOS image has, such as the firewall feature set, etc will increase the DRAM/flash requirements.

cheers

j0s3ph

ASKER

Thanks for the input. I definitely won't be using hardly any features at all. I know this router is older and it would be wise to minimize it's features. It has taken a lot of time to read all of the things my router is vulnerable to such as DoS. I really hope this fixes the problem and there is nothing wrong with my hardware.

fm250

the upgrade still good for you. do not use the IOS that has lot of features and require more memory and flash. You can get the basic IOS , but the newest one. the upgrade is easy and require only uploading the ios and earsing the old and installing the new one. so 3 steps but make sure you get the right ios that fits what you have (RAM and Flash). hope this helps

j0s3ph

ASKER

I have purchased a Cisco 1721. The model I had didn't have enough space to upgrade the IOS to anything within the last 4 years.

j0s3ph

ASKER

The new IOS fixed the problem. Thanks.