Well, technically if you can have all your tables/lookups pre-populated....
1Gb/sec = 125MB/sec Or 125KB/msec Or 125B/usec A 64 byte packet will then take about 0.5usec to send or receive. That means receiving the packet, and sending it takes 1usec of time. That leaves 29usec of time to process the packet, and get it ready to forward. While I don't know the details on HOW it does it internally, I could see how it *could* get it passed through in 30usec. Now, real-world performance, with ACL's, NAT, etc I doubt you'd come close. But from a theoretical perspective I can see that latency :) Ken Matlock Network Analyst Exempla Healthcare (303) 467-4671 matlo...@exempla.org -----Original Message----- From: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Jeff Bacon Sent: Friday, June 03, 2011 2:30 PM To: dwhit...@cisco.com Cc: cisco-nsp@puck.nether.net Subject: Re: [c-nsp] cat6500/fwsm performance I am, however, left with one mystery. How can the Cisco docs on a FWSM claim a 30-usec latency when clearly it isn't capable of that, at least not in any configuration that I'm aware of? Granted that it's all lies, damn lies, and marketing material, but putting that number in the main data sheet on the main product page for the card is a pretty ballsy lie even for Cisco. From: David White, Jr. (dwhitejr) [mailto:dwhit...@cisco.com] Sent: Friday, June 03, 2011 12:04 AM To: Jeff Bacon Cc: Pete Templin; Peter Rathlev; cisco-nsp@puck.nether.net Subject: Re: [c-nsp] cat6500/fwsm performance And here is a great doc TAC wrote up on single flow TCP performance which should answer all your questions: https://supportforums.cisco.com/docs/DOC-12668 Sincerely, David. _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ *** Exempla Confidentiality Notice *** The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any other dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify me immediately by replying to the message and deleting it from your computer. Thank you. *** Exempla Confidentiality Notice *** _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
