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<font size=3>Cost of operating v4/v6 combined for some time includes,
among other things:<br><br>
1. Help Desk calls resulting from confused customers wanting
configuration help.<br>
2. Memory for Routing Information for IPv4 plus IPv6.<br>
3. Help Desk calls resulting from errors by confused engineers
trying to work both protocols on too many devices.<br>
4. Cost of documentation and training for Help Desk personnel.<br>
5. Cost of "Linksys WRT54G-IP6" or equivalent because of
increased memory and programming requirements.<br>
6. Cost of software maintenance for network core router software --
didn't we just go through getting rid of DECnet, SNA, IPX/SPX, and
AppleTalk because of this, among other reasons??<br>
7. Marketing cost of being perceived as "obsolete".<br>
8. Opportunity cost due to more complex delivery configurations
slowing down sales.<br>
9. Cost of "IP Naming and Addressing Management" due to
multiple protocol complexity -- didn't we just go through getting rid of
DECnet, SNA, IPX/SPX, and AppleTalk because of this, among other
reasons?? <br><br>
Of course, this is just a smattering. Note also that, although
hardware costs for the router core are driven primarily by speed and port
count, memory costs can be substantial. <br>
<br><br>
At 7/24/2007 11:50 AM -0400, Chad Oleary wrote:<br>
<snip/><br>
However, what I'm trying to understand is why the motivation to<br>
rapidly go from v4 to v6 only? What are the factors I'm missing in<br>
operating v4/v6 combined for some time?<br><br>
Chad<br>
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<font face="Courier, Courier" size=3>-<br>
James R. Cutler<br>
james.cutler@consultant.com<br>
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