On Aug 26, 2015, at 01:07, Dave Taht <[email protected]> wrote:
>
> Another example of that problem is that it would be nice to have a
> standard for fetching "what is my uplink/downlink rate" from isps.
> upnp has some support for propagating this info, but it is underused
> and rarely configured properly.
When I’ve seriously tried pulling hard on that rope in the past, the horrible
ugliness at the other end was pretty nauseating.
There usually isn’t a nice “uplink/downlink rate” number that retail providers
can advertise. In a DOCSIS network, for example, the CMTS is typically not the
narrowest queue in the path to/from the default free zone, physical layer
asymmetry means that upward and downward limits are located in different
positions, and the limits tend to be dynamic and sufficiently variable that
using them for configuring AQM parameters in the subscriber gateway isn’t
recommended.
—james
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