🚀 go-pugleaf

At 01:36 PM 25/07/97 -0400, Jeff Woods wrote:
>
>Huh?   Define "first and last subnets of a /24".   A /24 subnetted to what
>degree?  Into eight /27's, meaning to throw away 60 addresses?
>

That's what he said.

>
>Your question as asked doesn't really make sense to me....

It didn't really make much sense to me either. But here it is, straight from
the horses mouth:

IP Subnet Calculation & Design

-----------------------------------------------------------------------------
IP Class:       C               IP Address:      209.89.37.0
Mask Bits:      2               Subnet Mask:     255.255.255.192
Subnets:        2+1             IP Major Net:    209.89.37.0
Hosts/Subnet:   62              Major Net Bcast: 209.89.37.255

                  Subnets for Fixed Length Subnet Masking                    
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  No.     Subnet           Hosts            Hosts            Broadcast
          Address          From             To               Address

       0  209.89.37.0      209.89.37.1      209.89.37.62     209.89.37.63
       1  209.89.37.64     209.89.37.65     209.89.37.126    209.89.37.127
       2  209.89.37.128    209.89.37.129    209.89.37.190    209.89.37.191
       3  209.89.37.192    209.89.37.193    209.89.37.254    209.89.37.255

Don't use subnet 0 (unless using ip subnet-zero command) and subnet 3.
Address space wasted by subnetting =  51.18% ( 26.77% with ip subnet-zero)
-----------------------------------------------------------------------------

Definitely not the most pretty thing I've ever seen. Thanks to Avi, James,
and Patrick for the "it used to be a problem but is no longer the case"
info. I still wonder why Cisco is still teaching this to its' reps.

Rob


Robert Hof,				     More and Faster
Manager, NETinc.			-------------------------
http://www.netinc.ca			 Service Service Service
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