[j-nsp] TCAM full on EX8200?

Chris Adams cmadams at hiwaay.net
Fri Oct 14 09:53:52 EDT 2011


Once upon a time, Phil Mayers <p.mayers at imperial.ac.uk> said:
> On that topic; I'm familiar with how TCAM can be used to accelerate 
> routing lookups, but less so with SRAM. Is the SRAM used to implement a 
> "simple" lookup table/tree, or does SRAM have some special properties 
> that enable it to do fast routing lookups?

SRAM is just normal RAM (address based lookups).  It differs from DRAM
in that it does not need to be periodically refreshed and can operate
with lower access times.

With faster RAM, regular data structures (e.g. trie) are fast enough for
routing lookups.

-- 
Chris Adams <cmadams at hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.


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