Looking for recommendations for a dedicated ping responder

Are there any products you're using which are dedicated to responding to
customer facing pings?

PaaS (pong-as-a-service)?

Can you elaborate?

We're being caught up in some sort of peering dispute between Level 3 and
Google (in the Dallas area), and we've fielded several calls from larger
customers complaining of 40-50% packet loss (to when there appears
to be no actual service impacting loss.

We currently suggest customers use a Linux server to ping against, or
another public host.

Ideally we'd like to use a hardware based ICMP system for customer use -
Accedian NIDs are good at this (exceptionally low jitter) accept they
throttle at 500 pings per second.

I know that the NETNOD folks did NTP in a FPGA that can do 4x 10GE,
perhaps that card and code could be used to do 40G ICMP responder?

- Jared

or, alternately test some useful application instead? I mean, 'wget' will
tell you stats about the bw/etc... apache-bench will as well, and you can
probably whip up some custom python/etc that'd do the same sort of thing.

The trouble is, LOTS of people want to ping something "out on the internet" to verify their connectivity, and things like GOOG's DNS servers are a popular lighthouse. I know from first hand experience (dealing with customers complaining about it), that GOOG, at least at some of the anycast nodes for the service, polices ICMP echo requests aimed at due to the quantity of those unwanted packets.

Having a cheap/small/powerful device that can be used as a ping target, and getting the masses to use it are two very different things.

Dan, are your customers missing DNS responses, or just echo replies from If the latter, ask what they'd do if thousands of people pinged one of their servers constantly.

On one of these lists around 6 months ago a Google network engineer confirmed they do rate limit icmp (aside from prioritisation).

Unless there's a real issue here this is more about educating people. It's amazing how many still miss interpret trace routes these days.

Kind regards

James Greig

Personally, I'd think twice before putting a box that does unthrottled
reflection of ICMP packets to their claimed source anywhere, especially not
one with a well-known address.

Matthew Kaufman

Hello Dan,

I think that Personar meets your needs

Take a look at: