Sort of....The 6500 has two modes it can operate in. Hybrid Mode or Native IOS Mode. The Hybrid Mode allows the user to interface with the "switch" side using the catalyst XDI/CatOS image. So all ports are switched ports. I think this allows the caching method you speak of to take place. The Native IOS mode gives the user an all IOS feel. The interfaces default to routed interfaces. You have issue the "switch mode access" command to turn the interface into a port. The diagram in the book and I think something else I read before leads me to believe that MLS will not work between switched and routed interface on a 6500 running in Native IOS Mode. Just trying to clarify. Thanks for ANY input. Ryan -----Original Message----- From: Robert Edmonds [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 26, 2002 1:59 PM To: [EMAIL PROTECTED] Subject: Re: Routed interfaces vs. Switched interfaces on 6500 [7:54170]
Ryan, If I understand your question, then I think I may be able to help. I believe what it means when it talks about caching flows, is that it caches the information about the flow -- particularly the path the flow will take. This makes it so the layer 2 portion of the switch doesn't have to send every packet to the router to make the layer 3 decision to route the packet. The basic process for MLS is like this. A stream of data comes into the router interface that is destined for a network other than the one it came in on, another VLAN. The switch sends the first packet in the flow to the MSFC (in the case of the 6500) to determine the path that should be taken to the remote network. The MSFC figures out how it should get to the remote network, sends the information to the switch, and the rest of the packets are switched using the information provided by the MSFC. Depending on the flow mask used, the next flow that comes through with the same destination address, may be able to be fast-switched (hope I used the right term) directly to the destination in question. Did I answer your question? Hope I have helped. ""Newell Ryan D SrA 18 CS/SCBT"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Referencing LAN Switching I have a question concerning routed vs. switched > interfaces on the 6500 running in native IOS mode. > If the diagram on page 832 is correct I'm confused about MLS. Does the > PFC/NFFC have the ability of caching flows between > an interface configured as a switched/routed interface?? > > > Ryan Newell Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=54185&t=54170 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
