Besides, load balance in CEF considers origin/destination , whereas Fast Switching only makes load balance by destination . Of course, there is per-packet in both , also.
> _____________________________________ > Henrique Issamu Terada, CCIE # 7460 > IT Support - Open Network > CPM S.A. - Tecnologia criando valor > Tel.: 55 11 4196-0710 > Fax: 55 11 4196-0900 > [EMAIL PROTECTED] > www.cpm.com.br > -------------------------------------------------------------------------- > ------------------- > Esta mensagem pode conter informagco confidencial e/ou privilegiada. Se > vocj nco for o destinatario ou a pessoa autorizada a receber esta > mensagem, nco pode usar, copiar ou divulgar as informagues nela contidas > ou tomar qualquer agco baseada nessas informagues. Se vocj recebeu esta > mensagem por engano, por favor avise imediatamente o remetente, > respondendo o e-mail e em seguida apague-o. Agradecemos sua cooperagco. > > This message may contain confidential and/or privileged information. If > you are not the addressee or authorized to receive this for the addressee, > you must not use, copy, disclose or take any action based on this message > or any information herein. If you have received this message in error, > please advise the sender immediately by reply e-mail and delete this > message. Thank you for your cooperation. > > > -----Mensagem original----- > De: Zsombor Papp [SMTP:[EMAIL PROTECTED] > Enviada em: quinta-feira, 3 de julho de 2003 12:06 > Para: [EMAIL PROTECTED] > Assunto: Re: fast switching v.s. cef switching [7:71815] > > Fast switching builds a forwarding cache on the fly, based on the packets > that reach the router and need to be switched. CEF builds the "cache" (CEF > > table) based on the routing table, independently from the traffic. > > The fast switching cache does not (necessarily) contain all the > information > that's in the routing table; it starts out empty and entries are aged out > of it later on. Consequently the first packet of every new "session" going > > through the router must be process switched, ie. a routing table lookup > and > cache population need to take place before the packet can be forwarded. > > The CEF table always contains all the information that the router has > access to, it changes (almost) immediately after the router receives a > routing update. > > Thanks, > > Zsombor > > At 03:17 AM 7/3/2003 +0000, wj chou wrote: > >Can anyone tell me what's the difference between fast switching and cef > >switching? > > > >thanks first! > > > >Ellie > Incoming mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.495 / Virus Database: 294 - Release Date: 30/06/2003 > > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.495 / Virus Database: 294 - Release Date: 30/06/2003 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71840&t=71815 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
