Simulation Scenario

amb1s1amb1s1 Posts: 408Member
I started to do simulation now and I have an scenario:


I have three Office and I want to subnet the the network in three Subnet:

US_Offices:
Can_Offices:
DR_Offices:

The ISP assigned me the 198.10.20.10

The Subnet mask that I'm going to used is 255.255.255.192

My question is which is the first Network Address that I can use and which router should I assign that address.

I know if I used 255.255.255.192 I have a range from 198.10.20.0 - 198.10.20.63, 198.10.20.64- 127, 198.10.20.128 - 191, 198.10.20.192 -255, but I know I cannot use a IP under 198.10.20.10 <--
Because that was the address that was assign to me. This is probably a dumb question, but this is my second week studying for the INTRO. Thanks
David G.
http://gomezd.com <
My Tshoot test Blog
http://twitter.com/ipnet255

Comments

  • markzabmarkzab Posts: 619Member
    I'll try to help.

    You're in the early stages of study it seems so you may not have gotten to NAT (Network Address Translation) just yet. The ISP assigned you the address of 198.10.20.10. That is probably the address that they gave you for your entire company to communicate to the outside world. It doesn't mean that you cannot use any of the host addresses or subnets that come before it. You were correct in your subnets. With a mask of 255.255.255.192 your subnets will be as you listed...

    1) 192.10.20.0 (host range .1 through .62 / .63 will be the broadcast)
    2) 192.10.20.64 (host range .65 through .126 / .127 will be the broadcast)
    3) 192.10.20.128 (host range .129 through .190 / .191 will be the broadcast)
    4) 192.10.20.192 (host range .193 through .254 / .255 will be the broadcast)

    I think the premis behind your question may come from not having an understanding of NAT yet, but you should get to that soon.

    If I'm way off in understanding what he/she is asking someone please correct me.
    "You, me, or nobody is gonna hit as hard as life. But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward. How much you can take, and keep moving forward. That's how winning is done!" - Rocky
  • markzabmarkzab Posts: 619Member
    Additionally, here is a link to an explanation behind NAT:

    http://www.cisco.com/warp/public/556/nat-cisco.shtml
    "You, me, or nobody is gonna hit as hard as life. But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward. How much you can take, and keep moving forward. That's how winning is done!" - Rocky
  • amb1s1amb1s1 Posts: 408Member
    You are right I have not got there yet, but thanks
    David G.
    http://gomezd.com <
    My Tshoot test Blog
    http://twitter.com/ipnet255
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