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North American Network Operators Group

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GLBX ICMP rate limiting (was RE: Tier-1 without their own backbone?)

  • From: variable
  • Date: Thu Aug 28 08:26:13 2003

On Wed, 27 Aug 2003, jlewis@lewis.org wrote:

> We have a similarly sized connection to MFN/AboveNet, which I won't
> recommend at this time due to some very questionable null routing they're
> doing (propogating routes to destinations, then bitbucketing traffic sent
> to them) which is causing complaints from some of our customers and
> forcing us to make routing adjustments as the customers notice
> MFN/AboveNet has broken our connectivity to these destinations.

We've noticed that one of our upstreams (Global Crossing) has introduced 
ICMP rate limiting 4/5 days ago.  This means that any traceroutes/pings 
through them look awful (up to 60% apparent packet loss).  After 
contacting their NOC, they said that the directive to install the ICMP 
rate limiting was from the Homeland Security folks and that they would not 
remove them or change the rate at which they limit in the foreseeable 
future.

What are other transit providers doing about this or is it just GLBX?

Cheers,

Rich





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