ryanlin2002 wrote: » Hi all, I am currently studying for my CCIE R&S, and am having a hard time memorizing the timers for each protocol. For example, with multicast, there are a lot of different timers with PIM-DM and PIM-SM (auto-rp and bootstrap). I am just wondering how do you guys manage to memorize these details without making your brain explode, haha.. Thanks