Thanks Chuck,
I think the number of bits in the mask equals the number of highest order
bits the addresses have in common.
By "highest order" bit, does that mean a bit set to 1?
As for the mask being 16, that's what the approved solution for a virtual
lab says. It is possible the solution is wrong. At any rate, it has me
confused.
Steve
""Chuck Larrieu"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I would think your mask would be more like /22 than /15
>
> Do you really want to summarize at the /15 boundary? 10.0.0.0/15 might be
> it.
>
> Chuck
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
> Stephen Alston
> Sent: Tuesday, April 24, 2001 6:07 PM
> To: [EMAIL PROTECTED]
> Subject: Route Summarization [7:1794]
>
> I want to summarize three addresses within an OSPF area:
>
> 10.2.1.0/24
> 10.2.2.0/24
> 10.2.3.0/24
>
> Converting to binary, I see the 15th bit is the highest order bit the
three
> addresses have in common. From that I see the summary address is
10.2.0.0.
> What I don't understand is why the subnet mask is 16bits. To me it looks
> like it should be 15.
>
> Thanks,
> Steve
> FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=1798&t=1794
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
