hash algorithm

scanner · 07-17-2006, 11:45 PM

Quote:

Originally Posted by arashpartow

Actually they are, read the following:
http://en.wikipedia.org/wiki/MAC_address

Somewhere around the 13th word... oh btw thats the word after the
12th word, but before the 14th its the unique thing between
the two.

Arash Partow
________________________________________________________
Be one who knows what they don't know,
Instead of being one who knows not what they don't know,
Thinking they know everything about all things.
http://www.partow.net

I can not always access the link http://en.wikipedia.org/wiki/MAC_address

I live in china.

graemef · 07-18-2006, 01:35 AM

Quote:

Originally Posted by arashpartow

Actually they are

But, it is possible to change the MAC address (see the rest of the article)

Plus, for some old NICs there was duplication of MAC addresses. If I remember correctly it was for NIC that were designed for different topologies, token ring and bus. It caused a problem when people bridged the two networks.

That said, MAC addresses should be unique if they are on the same network. (I think that unique MAC addresses is a requirement for ethernet)

scanner · 07-18-2006, 08:08 AM

Quote:

Originally Posted by graemef

But, it is possible to change the MAC address (see the rest of the article)

Plus, for some old NICs there was duplication of MAC addresses. If I remember correctly it was for NIC that were designed for different topologies, token ring and bus. It caused a problem when people bridged the two networks.

That said, MAC addresses should be unique if they are on the same network. (I think that unique MAC addresses is a requirement for ethernet)

Sorry to confuse you.
You are right. MAC address should be unique. What I means here is MAC address is just a part of key of concern hash table. And along with other still open parameter, MAC address would served as the key of the concern hash table.