[e2e] IP options inserted in transit

[RJ Atkinson]

On Friday, Aug 8, 2003, at 19:40 America/Montreal, Angelo Dell'Aera 
wrote:
> I don't agree. Letting intermediate routers adding/deleting IP options
> on-the-fly means  just losing   performance. If a  router is  asked to
> modify every IP header (whose size could be variable), it will waste a
> lot of time searching where it's  possible to add one or more bytes or
> which bytes to remove.

This is untrue, particularly for well-designed routers.

So far, I don't see any reason to add such an IP option on the fly,
but it is not hard to do in a well-designed ASIC-based router.
One does have to have very good Verilog designers, of course.

Ran
rja at extremenetworks.com