I think all your guys are right. The confusion is sometime people use packet switching and routing alternatively. I guess the called packet switching must be borrowed form frame switching of switch technology.
----- Original Message ----- From: "John Green" To: Sent: Wednesday, March 13, 2002 8:39 PM Subject: Re: question about switching [7:38165] > yes that is exactly what i wanted to clear up, as in a > router. ie routing is just a decision, and the > physical moving of the packet between the interfaces > (based on the above decision) is called as switching. > right ? > > and in a "switch" the moving of frames between > appropriate ports (based on MAC addresses) is called > as switching. right ? > > hope i got it all correct !! > > --- PING wrote: > > I am not sure if I understood the question > > completely but > > I think you are trying to distinguish the L3 > > switching and > > Routing? > > > > Routing and Switching are two different functions > > taking place > > within router. Routing takes place before switching > > can occur. > > So, router first has to determine "where" this > > packet needs to go, > > and which interface is headed towards that network, > > and that is > > "routing". Only after that, it will actually "move" > > the packet to that > > exit interface and that is "switching". > > > > Nadeem > > ====== > > > > > > > > > > > > > > John Green wrote: > > > > > "Routers use Layer 3 switching to route a packet, > > > and Layer 2 switches use Layer 2 switching to > > forward > > > frames." > > > > > > above is from the cisco web site. Layer 2 switches > > use > > > layer2 (ie datalink) for forwarding frames. fine. > > > > > > but for Routers also it says that it uses layer3 > > for > > > routing, although it is "forwarding" packets > > between > > > interfaces in a router. right ? (based on packet > > > forwarding decision taken according to the routing > > > table constructed) > > > > > > just wanted to confirm....... > > > > > > __________________________________________________ > > > Do You Yahoo!? > > > Try FREE Yahoo! Mail - the world's greatest free > > email! > > > http://mail.yahoo.com/ > [EMAIL PROTECTED] > > > __________________________________________________ > Do You Yahoo!? > Try FREE Yahoo! Mail - the world's greatest free email! > http://mail.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38204&t=38165 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
