/27 is the correct summarization for those routes, but the range it covers
is 0-31, with 1-30 being valid hosts. Get a subnet calculator to
double-check your math:
http://support.3com.com/software/utilities_for_windows_32_bit.htm
ftp://ftp.3com.com/pub/utilbin/win32/3CIPCalc.zip
--
Jason Roysdon, CCNP+Security/CCDP, MCSE, CNA, Network+, A+
List email: [EMAIL PROTECTED]
Homepage: http://jason.artoo.net/
Cisco resources: http://r2cisco.artoo.net/
"Stuart Laubstein" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Assuming the following internal routes need to be summarised
> 10.40.3.11 255.255.255.240
> 10.40.3.15 255.255.255.240
> 10.40.3.18 255.255.255.240
> 10.40.3.26 255.255.255.240
>
>
> Could they be summarised as
>
> 10.40.3.0 255.255.255.224 and the space summarised would be
10.40.3.1
> - 10.40.3.53
>
> Am I completely off base or close to the correct answer? I have studied so
> much I have confused myself.
>
> thanks
>
> stuart
>
>
>
>
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