OK, I think I got it.
/15 doesn't make sense if I want to pick up just a 10.2.0.0 network because
it would also pick up a 10.3.0.0 network.
/16 will work if its the intent to summarize at 10.2.0.0, however that over
summarizes if its not our intent to pick up 10.2.0.0
Therefore the three address
>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
Actually, the 22nd bit is the highest common bit.
10.2.0001.0
10.2.0010.0
10.2.0011.0
The longest summary for this would be 10.2.0.0 /22
Summarizing the range 10.2.0.0 thru 10.2.3.255
Stephen Alston wrote:
> I want to summarize three addresses within an OSPF area:
>
> 10.2.1.0/24
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 w
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:
5 matches
Mail list logo