down sev0?

Tony Li tli at
Fri Oct 27 06:38:15 UTC 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,

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