North American Network Operators Group
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RE: register.com down sev0?

  • From: Tony Li
  • Date: Fri Oct 27 02:41:37 2006 
 

> It was possible to implement BCP38 before the router vendors 
> came up with uRPF.


Further, uRPF is frequently a very inefficient means of implementing BCP
38.  Consider that you're going to either compare the source address
against a table of 200,000 routes or against a handful of prefixes that
you've statically configured in an ACL.

Yes, I realize that the latter approach is more of a managerial hassle,
but for those of you who feel that your silicon is running a tad too
warm, you may wish to consider this as a possible performance
improvement technique.  YMMV.

Your former router vendor,
Tony