Perhaps you should take this discussion off line as it is no longer relevant to the list.
Cheers, Symon ------------------- > >>until you have done some real research > -Anil (PhD [Comp-Sci Tokyo Inst of Technology]- Sister School of MIT) > Does that count?? > ----- > Priscilla > Just in case you were wondering, that was a rhetorical question. Which > means I do *not expect* a reply from your ego-centric highness. > Suggest you look up "rhetorical" when you grow up. It is rather a long word. > Thanks > -Anil > > -----Original Message----- > From: anil [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, December 11, 2001 2:54 PM > To: Priscilla Oppenheimer; [EMAIL PROTECTED] > Subject: RE: Does session layer protocol use IP address ? [7:28378] > > > >>What's your point? > This is total crap coming from a self proclaimed moderator. > >>The session layer is an elusive beast that is not implemented much > > That is my point. > ----- > >>until you have done some real research > -Anil (PhD [Comp-Sci Tokyo Inst of Technology]- Sister School of MIT) > Does that count?? > > > -----Original Message----- > From: anil [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, December 11, 2001 2:14 PM > To: Priscilla Oppenheimer; [EMAIL PROTECTED] > Subject: RE: Does session layer protocol use IP address ? [7:28378] > > > >Please stop sending messages about this topic > >(or any other topic) until you have done some real research. > I had no idea you were the moderator of this group. > My sincere apologies > > -Anil > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Priscilla Oppenheimer > Sent: Sunday, December 09, 2001 7:05 PM > To: [EMAIL PROTECTED] > Subject: RE: Does session layer protocol use IP address ? [7:28378] > > > At 06:18 PM 12/8/01, anil wrote: > >This is from Cisco Oct 2001 Packet.. > >http://www.cisco.com/warp/public/784/packet/oct01/p76-training.html > > > >It must be out of date :-) > > Not "out of date." Just wrong. You can keep coming up with wrong material. > What's your point? > > Have you looked at NFS with a Sniffer? Have you read a Unix man page? Have > you checked some RFCs? > > Have you considered what NFS does? What are its functions? What do its > messages look like? What protocols below it does it rely on? What problems > were its creators trying to solve? > > Please stop sending messages about this topic (or any other topic) until > you have done some real research. In your last message you quoted page 9 of > a CCNA book. Sorry to burst your bubble, but nobody on this list could care > less what it says on page 9 of a CCNA book. This list is for people > studying for advanced Cisco certifications. > > Priscilla > > >-Anil > >------------------------ > > > >5. Session Layer > >The session layer provides services in the application to manage inter-host > >communication. Think of this function as the old-time telephone switchboard > >operator: first, watching for a light on the switchboard indicating a > >connection was needed, next connecting and monitoring the call, and then > >finally disconnecting it by pulling the plug. For example, Network File > >System (NFS) is like an extended feature Telnet program for UNIX that keeps > >a connection (session) alive and available until the terminate command is > >given. Other examples include Structured Query Language (SQL), Remote > >Procedure Call (RPC), and X-Windows. > > > > > >-----Original Message----- > >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > >Priscilla Oppenheimer > >Sent: Saturday, December 08, 2001 3:13 AM > >To: [EMAIL PROTECTED] > >Subject: RE: Does session layer protocol use IP address ? [7:28378] > > > > > >That's 40% right. > > > >SQL, NFS, and XWindows are application-layer protocols. > > > >RPC and NetBIOS are session-layer protocols. > > > >We often have discussions about which books are best. Todd Lammle books can > >teach you basic router configuration. They are often wrong where protocol > >behavior is concerned. > > > >A better reference for learning about OSI is the OSI paper by Howard > >Berkowitz at http://www.certificationzone.com. > > > >Priscilla > > > >At 11:32 PM 12/7/01, anil wrote: > > > >The session layer is an elusive beast that is not implemented much > > >Yes, I checked it out.. > > >Session layer protocols include: > > >SQL, NFS, RPC, NetBios, Xwindows are examples of session layer protocols. > > >Page 9 of CCNA 2nd Edition study guide Todd Lammle > > > > > >-Anil > > > > > > > > > > > > > > >-----Original Message----- > > >From: anil [mailto:[EMAIL PROTECTED]] > > >Sent: Friday, December 07, 2001 11:17 PM > > >To: Priscilla Oppenheimer; [EMAIL PROTECTED] > > >Subject: RE: Does session layer protocol use IP address ? [7:28378] > > > > > > > > > >The session layer is an elusive beast that is not implemented much > > >Wait a sec, I thought SQL, NFS and netbios were session layer protocols? > > >Someone please correct me. > > >-Anil > > > > > > > > >-----Original Message----- > > >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > > >Priscilla Oppenheimer > > >Sent: Friday, December 07, 2001 9:55 PM > > >To: [EMAIL PROTECTED] > > >Subject: Re: Does session layer protocol use IP address ? [7:28378] > > > > > > > > >At 02:59 AM 12/7/01, mlh wrote: > > > >Hi, there, > > > > > > > >I read Todd Lammle's CCNA2.0 study guide and found this sentence: > >"Remember > > > >that none of the upper > > > >layers know anything about networking or network addresses." I am > >wondering > > > >if the session layer doesn't > > > >use network address, how can it establish a dialogue with other session > > > >layer in other host? > > > > > >I would probably disagree with Todd's statement, although it's taken out > of > > >context and you haven't given us enough information to say that the > > >statement is definitely "wrong." > > > > > >However, try to picture the numerous OSI pictures you have seen. Most of > > >them show horizontal lines between a layer on one host talking to the > same > > >layer on another host. So the session layer talks to the session layer on > > >the other host. That's probably what Todd was getting at. > > > > > >However, the pictures also show vertical lines. A layer calls on a layer > > >below to provide services. Each layer offers services to layers above it. > > > > > >The session layer is an elusive beast that is not implemented much. But > one > > >example might help. NetBIOS is a session layer. On a Windows client, when > > >you access a Server Message Block (SMB) server, NetBIOS has the job of > > >setting up a session with the server. Before it can do that, however, it > > >must find the address of the server. If it's a modern Windows network, > then > > >SMB and NetBIOS are probably running above TCP/IP and UDP/IP. So NetBIOS > > >sends a DNS or WINS query to find the IP address of the named server. It > > >then sets up a NetBIOS session with the server. Actually, first, the > client > > >sets up a TCP connection. TCP has port numbers. The client sends to the > > >well-known TCP port for NetBIOS session (139) and use an ephemeral port > on > > >its side. These port numbers could be considered "addresses" at the > > >transport layer. > > > > > >Anyway, back to the question. The statement is at best over-simplified. I > > >recommend you get yourself a sniffer and watch what really happens > between > > >layers. (Ethereal is free by the way.) > > > > > >Priscilla > > > > > > > > > > > > >Thank you for your time. > > > > > > > >mlh > > >________________________ > > > > > >Priscilla Oppenheimer > > >http://www.priscilla.com > >________________________ > > > >Priscilla Oppenheimer > >http://www.priscilla.com > ________________________ > > Priscilla Oppenheimer > http://www.priscilla.com [EMAIL PROTECTED] > Cheers, Symon Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=28864&t=28864 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
