BASH ssh login

Ok, there's been a good number of posts about this, but here goes. I want a script to log in to a system via ssh without using keys.
This will be used to log in to Cisco IOS devices.
I have tried the following, but could not get it to work:
SSH login expect shell script to supply username and password
It's probible that I just don't understand 'expect' and that script is totally viable, but my question is can this be done with just BASH? If it can not, then I will move on to trying to figure out that expect script.
Thanks.

afaik it can't be done without expect... maybe one of the scripting gurus knows of a way to pipe the password into the login prompt but for me, i've allways used expect for something like this.