Sorry for the lack of updates lately but I’m deep into studies and when I’m not my days are still full. Rack rentals have been fully booked so I have been running Dynamips lately for labs. Here are some advice if you want to run OER/PfR in Dynamips.
You need at least 256MB RAM for your MC and border routers. Other routers will be fine with 128. If you don’t have enough memory you will get tracebacks and log messages about not being able to run Netflow.
You probably want to enable sparsemem to not need to run too many hypervisors. I use two hypervisors for the entire INE topology.
I saw some inconsistency compared to the solution guide so I might try to redo the labs later with rack rentals. You can do most of the task though in Dynamips. Where you might run into trouble is when doing verification by simulating traffic. If you want to simulate HTTP by transfering an IOS image it is not as easy as with a real device.
Running full INE topology on my laptop with Core i5 and 4GB RAM only takes about 5% CPU. I have described in earlier posts how to achieve this.
If there is interest I might try to do a video on Dynamips on how I setup my topology and how I achieve the low load.