Richard Pruss wrote:
> So in summary it is not simply a question of software, the EAP proposal
> impacts less elements and reuses existing software.

  Let's assume that PANA is the best solution.  Let's also assume that
it's easy to deploy PANA on the client machines, and all intermediate
devices.  The question that's left is: What is the remaining expense to
deploy PANA?

  A: New server software at every ISP, with fail-over, redundancy, etc.
  A: Sysadmin training, knowledge, etc.

  Where do they get this software and expertise?  Right now, many sites
use Open Source DNS, DHCP, and RADIUS software.  There is no equivalent
PANA software.  Where do they get the expertise to administer these
systems?  No sysadmin is familiar with PANA.  There's no readily
available pool of information on the net that helps them through common
configurations or problems.  There is no PANA book from O'Reilly.  There
are no PANA Q&A mailing lists.  There is no group of sysadmins who
understand PANA, and can help newcomers.

  In contrast, leveraging existing AAA systems means that they simply
upgrade their existing AAA software.  Any "new" configurations (e.g.
EAP) are widely documented on the net, with readily available examples,
how-to's, complaints about bugs, fixes, mailing lists, books, user
communities, etc.

  Building that knowledge base is tremendously expensive, and it
*doesn't* show up as a line item on the budget.  It shows up as every
sysadmin getting 50% less work done for a month as they bootstrap their
PANA knowledge.

  I'm not assuming that the DHCP proposal is cost-free.  But on the
server side, the costs are significantly lower than PANA.

  Alan DeKok.
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