How do you figure ???????
... if the orbital height is approx 22,000 to 26,000 miles, then 100,000
miles is a pretty close approximation as it takes 4 legs for a complete
round trip :
Outbound Uplink 25,000 miles
Outbound Downlink 25,000
Inbound Uplink 25,000
Inbound Downlink 25,000
100,000 miles total
Erik Goldoff
IT Consultant
Systems, Networks, & Security
' Security is an ongoing process, not a one time event ! '
-----Original Message-----
From: Ken Cornetet [mailto:[email protected]]
Sent: Friday, April 30, 2010 9:51 AM
To: NT System Admin Issues
Subject: RE: www.Sunbelt-software.com down?
You are off by a factor of two on your round trip distance:
http://en.wikipedia.org/wiki/Geosynchronous_orbit
-----Original Message-----
From: Erik Goldoff [mailto:[email protected]]
Sent: Friday, April 30, 2010 9:23 AM
To: NT System Admin Issues
Subject: RE: www.Sunbelt-software.com down?
Quick approximations :
Speed of light is 186,000 miles per second.
Round-trip distance of VSAT is approx 100,000 miles ( up-down-up-back )
The mechanisms of the network always add to slow the theoretical max speed
So I stick with my 600-700ms best case scenario
Erik Goldoff
IT Consultant
Systems, Networks, & Security
' Security is an ongoing process, not a one time event ! '
-----Original Message-----
From: Steven M. Caesare [mailto:[email protected]]
Sent: Friday, April 30, 2010 9:14 AM
To: NT System Admin Issues
Subject: RE: www.Sunbelt-software.com down?
Hmm, that's about double what I remember, but maybe I was thinking of
single-leg latency.
Too busy to do the math on a Friday. :)
-sc
> -----Original Message-----
> From: Eldridge, Dave [mailto:[email protected]]
> Sent: Friday, April 30, 2010 9:12 AM
> To: NT System Admin Issues
> Subject: RE: www.Sunbelt-software.com down?
>
> Same here. very painful. 1500 ms ping times with HughesNet
>
> -----Original Message-----
> From: Steven M. Caesare [mailto:[email protected]]
> Sent: Friday, April 30, 2010 7:06 AM
> To: NT System Admin Issues
> Subject: RE: www.Sunbelt-software.com down?
>
> Hehe... I've done it. It's painful. But better than having to book a
plane ticket
> for emergencies.
>
> Actually, TightVNC with local cursor update was bearable...
>
> -sc
>
> > -----Original Message-----
> > From: Erik Goldoff [mailto:[email protected]]
> > Sent: Friday, April 30, 2010 9:03 AM
> > To: NT System Admin Issues
> > Subject: RE: www.Sunbelt-software.com down?
> >
> > With anything bird based, you'll never get less than about 600-700ms
> latency
> > as a best case scenario, and then latency delays get worse from
there.
> > Don't even bother trying to use Citrix ICA or Terminal Server RDP
over
> a VSAT
> > link ....
> >
> >
> > Erik Goldoff
> > IT Consultant
> > Systems, Networks, & Security
> >
> > ' Security is an ongoing process, not a one time event ! '
> >
> >
> >
> > -----Original Message-----
> > From: James Kerr [mailto:[email protected]]
> > Sent: Thursday, April 29, 2010 5:27 PM
> > To: NT System Admin Issues
> > Subject: Re: www.Sunbelt-software.com down?
> >
> > To hell with fixed wireless get an earth station installed!
> >
> >
> > ----- Original Message -----
> > From: "Ben Scott" <[email protected]>
> > To: "NT System Admin Issues" <[email protected]>
> > Sent: Thursday, April 29, 2010 5:16 PM
> > Subject: Re: www.Sunbelt-software.com down?
> >
> >
> > > On Thu, Apr 29, 2010 at 3:07 PM, Stu Sjouwerman
> > > <[email protected]> wrote:
> > >> So we were 3 for 3 with internet services going down for a little
> > >> while there.
> > >
> > > Thanks for the info, Stu. Sharing info is good.
> > >
> > > You may want to look into fixed-wireless connectivity. Here at
> > > %WORK%, we have two 'net feeds. One is an ordinary Comcast cable
> > > Internet feed. The other is fixed-wireless, provider is a local
> ISP.
> > > Antenna on our roof goes to a tower at the top of a local hill.
> From
> > > that station they can hop to their local office a few towns over.
> > > From there they have landlines to two different major providers.
> The
> > > local ISP even has plans to go wireless from their local office to
> > > their POP in Boston, about 50 miles away.
> > >
> > > -- Ben
> > >
> > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~
> > > <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
> >
> > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~
> > <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
> >
> >
> > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~
> > <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
>
> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~
> <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
>
>
>
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> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~
> <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
