said by MisterP:
Performance is 16/2, BLAST! is 25/4, Extreme 50 is 50/10; at least those are the main tiers in the southeast. As for the logs, config files, signals, etc. type 192.168.100.1 into your browser. The default login should be somewhere on the modem. Probably a variation of admin/pass.
I know how to get to the modem diagnostic pages. The speed tiers are different in my area due to FIOS competition.