A note on routing:
	We're actually in like chapter 16 here
	But I figure you know some of this stuff from networking 1...
	Networking 1 is more of an overview than the first few chapters
	Latency was really low

Book chapters for volume 1:
	8:  Today, on vlans
	9 and 10:  On spanning trees, vlan trunks, etc
	11 through 14:  On IP abddresses and subnetting
		We did cover that pretty well in Networking 1
		I'm thinking about it, maybe some kind of "interesting" review
		There is an "online appendix d" that I haven't tried to access
	15 through 21:  On routers
	22 through 25:  On IPv6
	26 through 29:  On wireless LAN
	No real reason to stop there unless we're near the end of the semester
		Since you have volume 2 already

Broadcast Domains:
	The area a broadcasted frame will cover
	Could make sense to limit broadcast area, subdividing up a network
		Same idea as a subnet
	Need routers to let them actually communicate

Forget about routers for a minute.  Let's make two separate networks
	On two switches.  Easy, right?
	Tyranny of geography
	What if we wanted some computers from each network on each switch?
		Then we need vlans
		Or more switches...

Arrangement 1:  Just put two links between the switches
	Advantage:  Bandwidth isn't shared between vlans
	Disadvantage:  What if we have a whole bunch of vlans?

Arrangement 2:  trunking
	Advantage:  Fully configurable in software
	Advantage:  Supports a large number of vlans
	Disadvantage:  Only one link's worth of bandwidth
		Trunk ports on switches can help with that!
	Requires 802.1Q tagging
		wikipedia ethernet frame
	"switchport mode trunk" worked for me
	show interfaces trunk is interesting

Going between subnets:
	Let's set up two vlans on a 2960 switch
		Can't communicate between them
	Now we'll add a 4331 router
		So we can route between vlans, which are on the same switch

vtp is avoided in the book, because it's not on the test
	Is that a good idea?  Is it useful?

Lab on Monday:
	Haven't decided completely, but it'll probably be some configuration to set up
	Will involve vlans, and probably a router to move traffic between them
	Probably a "straightforward" configuration instead of something weird
	Probably unrealistically small