Does the CEF cache and Fast Switching cache reside in router memory? And if so what makes CEF faster than Fast Switching?
Regards, Jans >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 -- ================================ Jans van Deventer Phone: (55-61) 361-1466 Fax: (55-61) 234-8722 www.rhox.com.br ================================ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71839&t=71815 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
