The answer to your first question is: do a "sh ver"
It will show you the amount of installed memory.
Date: Friday, November 20, 1998 6:17 AM
Subject: Total memory and used memory on Cisco 2501 router?
>I just want to know how to find out the total memory on the Cisco 2501
>Is it "sh mem" or "sh proc mem" command?
>I did both and the results is given below,
> sh mem
> Total (b) - 16449752
> Used (b) - 2530312
> sh proc mem
> Total (b) - 18546904
> Used(b) - 2865264
>Which is the total memory and used memory?