1. How to Build a CAN Last Update 2007.05.27 1.0.0 Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 1

2. Objectives of This Section Learn –What a CAN looks like in general –This does not include every single detail, just the general approach to take to build such a thing –The rest of the details are in other presentations Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 2

3. What is a CAN A CAN – Campus Area Network connects multiple networks with easy walking distance of each other Let’s look at three examples of what would constitute a CAN Then we’ll look at the specific equipment required to setup a CAN Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 3

4. What Does a CAN Look Like The simplest CAN just connects two buildings horizontally Think of this view as being from above Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 4 Building ABuilding B Cable

5. What Does a CAN Look Like In this example the most common way to connect the two buildings is to use fiber optic cable run underground from an entry point in each building Inside each building the fiber is run from the exterior wall through the air space above the ceiling to the LAN room just like any other cabling Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 5

6. What Does a CAN Look Like In the LAN room the fiber is connected into the LAN through a switch port Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 6

7. What Equipment is Required For this simple two location CAN let’s look at an equipment list from a Siecor catalog Siecor is a company that makes the parts required to create such a thing, as do many other companies Siecor is now part of Corning Cable Systems This is just an example of one way to do this Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 7

8. What Equipment is Required LocationQuantityPart NumberDescription Building A1WCH-04PWall Mount Cabinet 1CCH-CP06-59SMF Patch Panel 2CCH-CP06-91MMF Patch Panel 695-000-41SMF SC Connectors 1295-200-40MMF SC Connectors Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 8

9. What Equipment is Required LocationQuantityPart NumberDescription UndergroundHow ever many meters of fiber as are required 018XW4-AI420A20Altos Loose Tube Fiber Optic Cable with 12 MMF and 6 SMF Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 9

10. What Equipment is Required LocationQuantityPart NumberDescription Building B1WCH-04PWall Mount Cabinet 1CCH-CP06-59SMF Patch Panel 2CCH-CP06-91MMF Patch Panel 695-000-41SMF SC Connectors 1295-200-40MMF SC Connectors Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 10

11. What Equipment is Required Let’s look at some pictures of these parts as provided by the Corning web site Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 11

12. What Equipment is Required Wall Mount Cabinet - WCH-04P Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 12

13. What Equipment is Required SMF Patch Panel which mounts in the cabinet on the right side where the ovals are shown - CCH-CP06-59 Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 13

14. What Equipment is Required MMF Patch Panel which mounts in the cabinet on the right side where the ovals are shown – CCH-CP06-91 Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 14

15. What Equipment is Required SMF SC Connector which mounts to the back side of the patch panel – 95-200-41 Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 15

16. What Equipment is Required MMF SC Connector which mounts to the back side of the patch panel – 95-000-40 Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 16

17. What Equipment is Required Altos Loose Tube Fiber Optic Cable with 12 MMF and 6 SMF - 018XW4-AI420A20 Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 17

18. What Equipment is Required The parts shown here all mount to a wall The same thing can be done using a relay rack, which is attached to the floor, and patch panels of the same sort that mount to the relay rack, instead of to a cabinet as shown above The parts that connect to this hardware just discussed, like switches are discussed after the next example of a somewhat more complex CAN Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 18

19. What Does a CAN Look Like A more complex CAN would still connect horizontally but connect more than just two buildings Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 19 Building C Building B Building D Building A

20. What Does a CAN Look Like In this example four buildings are connected using fiber optic cable run underground from an entry point in each building to a single building A CAN is wired just like a LAN, in other words in a star pattern Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 20

21. What Does a CAN Look Like Inside each building the fiber is run from the exterior wall through the air space above the ceiling to the LAN room just like any other cabling In the LAN room the fiber is connected into the LAN through a switch port Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 21

22. What Does a CAN Look Like As discussed above a CAN usually connects physically separate buildings by installing cable horizontally However if you are connecting floors in a single building vertically, when does the distance make this a vertical CAN instead of a backbone Who knows, doesn’t really matter Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 22

23. What Does a CAN Look Like Just keep in mind that the techniques used to make horizontal connections can be run vertically as well Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 23

24. What Does a CAN Look Like Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 24

25. What Equipment is Required The first thing used is a cable to connect the sites It does not matter whether it is one site or several sites Once the cable is in place the next step is to connect it to the equipment at each site What kind of equipment depends on what the rest of the network will look like Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 25

26. What Equipment is Required Some examples are mentioned next Do not rely on the equipment mentioned specifically, since they are just for illustration purposes The exact manufacturer and model is not as important as the concepts discussed Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 26

27. What Equipment is Required In general for a simple CAN an Ethernet Layer 2 switch is used An example of this type of switch suitable for an average size LAN in each building who have users who need to share with the other building or just talk to users in the other building would be a Cisco Catalyst 2900 Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 27

28. What Equipment is Required The only other question is what type of fiber to use and therefore what type of fiber port is required in the switch This question is answered by looking at the distance between locations and the capacity or speed required for the connection Gigabit – 1000 Mbps – Ethernet is the usual choice Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 28

29. What Equipment is Required 1000BaseSX – Short Wave Length –Uses a short wave length laser - 850 nm - usually over multimode fiber optic cable –Using 62.5 um multimode the distance limit is 220 to 275 m –Using 50 um multimode the distance is 500 to 550 m Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 29

30. What Equipment is Required 1000BaseLX – Long Wave Length –Uses a long wavelength laser - 1,300 nm - over multimode or single mode fiber optic cable –Over 62.5 um multimode fiber the distance is 550 m –Over 50 um multimode fiber the distance is 500 m Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 30

31. What Equipment is Required Of course this is a flat design and does not scale well Since the use of layer 2 switches puts all of the devices in the same broadcast domain and a single IP subnet Another advantage to a layer 2 switch is it requires no configuration, such as a router does Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 31

32. What Equipment is Required If the campus or traffic over the links grows this can be changed to a hierarchical design by just changing the model of the switch to one that operates at layer 3 or putting a router on each side of the fiber To move up the switch would need to be replaced with a switch that can operate at layer 3 and has more fiber ports Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 32

33. What Equipment is Required For the four building CAN shown above a layer 3 device is called for For example a Cisco 3508 XL has 8 fiber ports, which would work for our example site Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 33

34. What Equipment is Required In this particular switch the front has nothing but slots Modules are inserted into these slots In this case we would need 4 GBIC – Gigabit Interface Modules Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 34

35. What Equipment is Required 3 of the GBIC modules would connect to the fiber coming in from the other three buildings Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 35

36. What Equipment is Required The fourth GBIC module would connect to a layer 2 switch that would contain the copper ports used to connect the LAN in each building to the CAN for all of the buildings Another model Cisco Catalyst 2900 for example Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 36

37. What Equipment is Required The servers and workstations are then plugged into the copper RJ-45 ports shown along the bottom of the switch Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 37

38. Review What is a CAN Copyright 2000-2007 Kenneth M. Chipps PhD www.chipps.com 38