From: richard.harvey@nbs.nhs.uk
Date: Mon Jan 23 2006 - 08:09:27 GMT-3
First convert to binary. Since it's obvious that summary will fall on the 4th 16-bit hex value, just convert that value for both component prefixes.
12 = 18 (decimal) = 00000000 00010010
25 = 37 (decimal) = 00000000 00100101
We can then see that all the bits up to bit 10 are the same. Add 10 to the rest of the prefix (going left) to get our mask length:
16 + 16 + 16 + 10 = 58
Then just write the prefix with all 0's for the 'host' portion of the address, giving:
2001:163:1:0::/58
or 2001:163::/58
Hope that helps,
Richard
-----Original Message-----
From: MIME :InderpalS@mindscapeit.com Sent: 23 January 2006 04:47
To: ccielab@groupstudy.com
Subject: IPV6 Summary address
Could anyone tell the summarized prefix for following IPv6 addresses
possibly with some explanation how it is summarized..
Summarize below addresses:-
2001:163:1:12::/64 and 2001:163:1:25::/64
Thanks in advance!
Regards,
Inder
1/23/2006 8:49:53 AM
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