[AusNOG] NBN Satellite Latency

[Mark Smith]

On 5 February 2017 at 13:11, Jason Ross <jason at ethisec.com.au> wrote:
> It's interesting how a simple question can create a somewhat educational
> thread.
>
> FWIW, I've always worked on 300ms with satellite comms, seems to cover most
> scenarios.
>

If people want to see how "good" using the Internet over satellite is,
the following commands for a Linux router, such as OpenWRT will add
200ms in each direction (pppoe-wan, wlan0 are the WAN and LAN
interface names).

root at wndr3800:~# tc qdisc del dev pppoe-wan root
root at wndr3800:~# tc qdisc del dev wlan0 root
root at wndr3800:~# tc qdisc add dev pppoe-wan root netem delay 200ms
root at wndr3800:~# tc qdisc add dev wlan0 root netem delay 200ms



> Jason
>>>> "Scott Weeks" <surfer at mauigateway.com> 3/02/2017 6:04 PM >>>
>
>
>
> --- mclennan at internode.on.net wrote:
>
> Everyone needs to remember the basics when it
> comes to pinging over a geo satellite.
> ------------------------------------------------
>
>
> It's *generally* 250msec up and 250msec down.
> .5 sec round trip for sat only mostly straight
> up-n-down at the radio.
>
> https://en.wikipedia.org/wiki/Geostationary_orbit#Communications
>
>
> scott
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