Filter NTP traffic by packet size?

sthaug at sthaug at
Sun Feb 23 17:29:45 UTC 2014

> The business model seems clearer when offering filtering as a service
> to downstream networks, the effects are narrowly scoped, and members
> have control over the traffic they accept from the exchange, e.g. I
> don't want to accept NTP traffic to any destination that exceeds
> 1Gbit/s, or is sourced from an NTP server on my blacklist. Giving
> policy control to the downstream allows them to protect their networks
> and make business decisions about how they want to prioritize services
> and customers when resources are constrained.
> Would exchange members pay for this type of control?

Speaking only for myself: No. The L2 IXes I connect to should use their
resources for packet switching, not filtering. Way too many things that
could go wrong if we go down the filtering path...

Steinar Haug, AS 2116

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