Ascend Archive
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Re: (ASCEND) Net Medic and My Max 4K
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On Sat, 9 Aug 1997, John Hodson wrote:
> Are there any ideal time values for LQM Min and Max with the objective of
> reduced latnecy in mind?
Certainly -
A minimum of 1000 (that's 10 seconds) will still allow people with Ciscos
or other routers to connect (if you take the default 600 a Cisco won't
connect because by default it has a minimum keepalive period of 10
seconds).
A maximum of 6000 (60 seconds). This lets people who object to keepalives
being switched on set their systems to negogiate 60 seconds so keepalive
frequency can't demonstrably have any affect on their available bandwidth.
:-)
There are a couple of issues:
1. The present Windows CE (pen-computer) version won't do PPP if LQM is
switched on (we have this in with Casio and Microsoft at the moment).
2. The Win95 built-in idle timer considers keepalives as "traffic," even
though they're not (they're part of LCP, and consquently PPP). The Windows
NT idle timer doesn't have this problem.
It doesn't however defeat the Max idle timer (which has the correct
interpretation), so anything you set in RADIUS will still take effect, and
the keepalives won't show up as traffic.
Experimentally, we've found an LQM minimum of as low as 300 (3 seconds) to
be a good Quake-enhancer. :)
- --
Josh Bailey (mailto:joshb@xtra.co.nz)
Internet Network Specialist Voice (DDI): +64-9-355-5923
Telecom Internet Services Voice (Mob): +64-25-514-899
Extension: 93423 (Lvl. 4, 120 Mayoral Dve) Fax: +64-9-355-5260
Private Bag 92028, Auckland, NZ Pager: +64-26-114-448
PGP public key available at http://www.pgp.net/pgpnet/pks-commands.html
DISCLAIMER: The contents of this message are entirely my own opinion, not
necessarily that of my employer.
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