1. When auto-summarization is on in EIGRP, I notice it summarizes to the classful boundary (ie: 192.168.3.0/24). Is this just how IGP's work with auto-summarization on? They will always summarize to a classful boundary correct? /8 /16 /24 ?
If I turn off auto-summarization , I notice I see the REAL subnet mask. (thanks donjohnston for this info)
2. Is auto-summarization usually used in production enviornments? What if you have an internal network that spans several sites. Each router is running EIGRP. Would you use auto summarization there? I imagine yes if the networks are contiguous?