OSPF:  Open Shortest Path First

Note:  No IPv6 with IRON yet

Why wildcard mask?
	I'll try my best!
	Imagine a router with three interfaces
	It maintains a connection to the 172.16.0.0\16
	It has two interfaces in this network configured like this:
		172.16.1.0/24
		172.16.2.0/24
	Since the router connects to both, you can use this:
		network 172.16.0.0 0.0.255.255 area 0
	But why is it backwards?
		Best explanation I saw:
			So you won't mix it up with the subnet mask

UI, binary, and engineers, and CLI
	Engineer UI preferences and assumptions
	Most stuff is simpler than you might think
	How does the assembly come out to convert these?
		We won't write the assembly
		I haven't taught CS250 recently
		bitwise vs. logical operations
		
Isn't this kind of a hassle with classless networking?
	New example:  Three interfaces, two of them are like this:
		172.16.0.1/14
		172.20.0.1/14
	Can we calculate a wildcard mask to include both?
		Still leaves us with:  Why not this command?
		network 172.16.0.1/12 area 0
	Simple answer:  Because that's not the way it is
		Sorry

Load balancing:
	Per-packet vs. Per-destination
	As far as I can tell, it doesn't adjust for busy links
	EIGRP can
	MPLS can apparently solve this problem

A note about router CPU and memory:
	Router CPU and memory has grown more than network size
	Example:  When I started here, this room had about 30 computers
		It still does
	When I started here, people averaged about a wifi device each
		They still do
	When I started here, we had an old 100Mbit switch
		Now we've got a 2960X
	This leads to reduced importance for segmentation
	reddit survey suggests minimal use these days
	But...if an area is truely a stub, why not?
	Note:  BGP had a 512K day in 2014
	
Further philisophical note about traditions:
	/bin, /usr/bin, and (on FreeBSD) /usr/local/bin
	why?  

Note on page 482 implies no multiarea OSPF on CCNA
	But suggests learning network with area anyway