Does adding additional L5 rules increase processing time? I recall back in the day of the CSS 11000, it was claimed the box was not impacted by additional rules and processed at near line rate. Obviously, adding your first L5 rule for a given VIP will increase processing by the delayed binding, but is this increased when adding additional L5 rules for the same VIP? Or does the rule matching algorithim use a hash function that doesn't cost extra to find additional matches, much like the Catalysts' TCAM processing?
If there's a CCO doc detailing this -- couldn't find one -- that would be even better.
it will require more processing time but not much. The box has a rule order. So it does check the rule was the most requirements, does all the checking and then fallbacks to rules with less requirements.
So, if you have currently a rule with just a url matching and add anoter rule with url + header-map it will require more processing as before the box did not have to look at the header-map.
If you do the reverse and already have url + header-map and add a rule with just a url, the box will continue to check header + url and if the header does not match but the url does, it requires a small extra step to fallback from rule 1 to rule 2.
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