On 21.04.2020 20:59, Brandon Martin wrote:
On 4/21/20 2:35 PM, Brian J. Murrell wrote:
Interesting. So basically as Mel said, over-sold network. :-(
This is pretty typical of consumer VSAT and such. You can of course get better performance...if
you're willing to pay for it. If you find the right carrier/re-seller, you can perhaps find one
whose "system" (to include ground station, terminals, and smarts on the bird) can respect
DSCP and flag at least your voice traffic appropriately (probably EF) to perhaps lower the jitter
and make conferencing more palatable. Finding competent folks at a typical consumer provider's
helpdesk to talk to about such things is probably the limiting factor. The higher up the foodchain
you go towards the folks who "own" the spectrum rather than re-sell will perhaps get you
more luck on something like this though probably also at higher MRC.
Unfortunately, it's just what happens when you spread an already limited
resource (transponder bandwidth) out over essentially an entire continent or at
least substantial portions of it. Imagine if you had a cable provider with a
single node for an entire, say, US state.
Could be interesting to do one-way-delay measurements in parallel to
see how the packets are travelling
and where and how big the queues are (Bufferbloat).
Likeways if you have a unix system you could look at tcp statistics
to see if you have packet retransmits (netstat -s).
As previously noted TDMA between uploading or even ACK'ing users could
be a bottleneck for the download speed.
Olav
