PS> Rationale for interim psi-port

PS> Rationale for interim psi-port

McDonald, Ira imcdonald at sharplabs.com
Thu Mar 6 10:28:29 EST 2003


Hi folks,

As we discussed briefly on Tuesday, our recommendation, until
IANA gives us an official "registered port" (greater than 1024), 
is to use "ephemeral port" 55559 as the interim psi-port for 
our prototyping and early testing (see section 5.1.1 of the spec
that Dave Hall just posted).

I just pulled down a current copy of the IANA Port Registry
and found:

lrs-paging      3700/tcp   LRS NetPage
lrs-paging      3700/udp   LRS NetPage
#   Geoffrey Wossum <geoffrey at pager.net> February 2003

Cheers,
- Ira McDonald
  High North Inc


PS - An "ephemeral" or "dynamic" port is one greater than
49151.  Such ports are used (for example) for the data
transfer port for FTP (the control port MUST be 21).
No one can reliably use an "ephemeral" port long-term.



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