VLSM Design Drill #2
The boss of our #CCNA is at it again today with another VLSM project. The scenario helps you exercise your brain in a VLSM world. As with all the VLSM design drills, you are given an existing internetwork with some pre-existing subnets, and you need to add some new subnet(s) to the design. What subnet would you pick so you don’t cause an overlap? Today’s post lists the question; next time, the answer. Details below the fold.
Your boss wants you to add a subnet to an existing design. The existing design already has these five subnets:
The boss has made these choices:
- He will add 3 new subnets
- All subnets will be part of class C network 192.168.1.0
- He will use one mask only for all the new subnets
- He has not decided which mask yet
- He wants to use the numerically highest possible subnet numbers
While the boss works to make his final choice for a mask, he wants you to do the planning. He has narrowed down the choices to three masks, as listed here. Your job: for each mask, find the three subnet IDs that would meet all the criteria, without overlapping the existing subnets.
Ask questions if you have them. Also, check out the ICND1 100-101 Cert Guide’s chapter 20 for some tips on finding these overlaps, or check the other VLSM drills here in the blog.