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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: FCIP: Comment 120Ralph, Upon further thought, it appears to me that the "Destination FC/FCIP Entity Identifier" should be sent and received in the FSF. I can not think of a way currently to build an FCIP_LEP with multiple FCIP_DEs - for ex., how would a sender indicate his intention to add a TCP connection to an FC/FCIP Entity Pair that it's already communicating with? Thanks. -- Mallikarjun Mallikarjun Chadalapaka Networked Storage Architecture Network Storage Solutions Organization Hewlett-Packard MS 5668 Roseville CA 95747 cbm@rose.hp.com ----- Original Message ----- From: "Ralph Weber" <ralphoweber@compuserve.com> To: <ips@ece.cmu.edu> Cc: "Mallikarjun C." <cbm@rose.hp.com> Sent: Monday, May 06, 2002 1:29 PM Subject: Re: FCIP: Comment 120 > Mallikarjun, > > Oops! This mistake is on me. > > The Source FC Fabric Entity World Wide Name field DOES NOT contain the > WWN of the FC Entity. Rather, it contains the "Fibre Channel Name_Identifier > [FC-FS] for the FC Fabric entity associated with the FC Entity FCIP Entity > pair." > > Two corrections are needed in the picture that I led you to believe in: > > 1) The "FC Fabric entity" IS NOT the FC Entity, it is the FC product > (switch or whatever) that contains one or more FC Entities; and > 2) There is no 1-to-n relationship between FC Entities and FCIP Entities, > in fact, they come in 1-to-1 one matched pairs. > > Note that these corrections further strengthen the argument that the > 1-to-n discussion belongs in FC-BB-2, since the multiplicity relationship > really is farther inside FC constructs than I first suggested. > > Hope this helps. > > .Ralph > > "Mallikarjun C." wrote: > > > > > Ralph, > > > > > The requested figure relies on Fibre Channel concepts and thus appears > > > in a T11 document, FC-BB-2, ftp://ftp.t11.org/t11/pub/fc/bb-2/02-030v1.pdf. > > > See Figure 23 on PDF page 87, or Figure 26 on PDF page 94. > > > > Thanks for the reference, but unfortunately it doesn't help make the point > > that there is 1-to-n association between FC Entity and FCIP Entity. > > > > Given that FCIP is an RFC that defines these Entities and their relationships > > in its own right, my suggestion would continue to be that the association be depicted > > in an architectural model diagram. It could be as simple as showing a shadow ASCII > > box to the FCIP Entity box. I will leave it here up to you and Co-Chairs to make > > the call. > > > > Regards. > > -- > > Mallikarjun > > > > Mallikarjun Chadalapaka > > Networked Storage Architecture > > Network Storage Solutions Organization > > Hewlett-Packard MS 5668 > > Roseville CA 95747 > > cbm@rose.hp.com > > > > ----- Original Message ----- > > From: "Ralph Weber" <ralphoweber@compuserve.com> > > To: <ips@ece.cmu.edu> > > Cc: "Mallikarjun C." <cbm@rose.hp.com> > > Sent: Monday, May 06, 2002 7:35 AM > > Subject: Re: FCIP: Comment 120 > > > > > Mallikarjun, > > > > > > > >... the "FC/FCIP Entity Identifier" is unique only within the scope > > > > >of the given FC Entity's WWN. ... the model allows multiple FCIP > > > > >Entities to be associated with the FC Fabric Entity WWN. > > > > > > > > If that is so, please add an architectural model diagram (similar to > > > > Figure 3, or perhaps convert Figure 3 into) which clearly shows this > > > > 1-to-n association. > > > > > > > > This is the only hint in the document (at least that I found) which > > > > suggests the stated possibility. Figure 3 with 1-to-1 association almost > > > > seemed like the architectural model, but on careful reading, is only > > > > an example. > > > > > > The fact that the "FC/FCIP Entity Identifier" is unique only within > > > the scope of a given FC Entity's WWN seems to be clearly stated in the > > > definition of the field: > > > > > > "The Source FC/FCIP Entity Identifier field SHALL contain a unique > > > identifier for the FC Entity FCIP Entity pair that generates (as opposed > > > to echoes) the Special Frame. The value is assigned by the FC Fabric > > > entity whose world wide name appears in the Source FC Fabric Entity World > > > Wide Name field. > > > > > > "Note: The combination of the Source FC Entity World Wide Name and Source > > > FCIP Entity Identifier fields uniquely identifies every FC Entity FCIP > > > Entity pair in the IP Network." > > > > > > The requested figure relies on Fibre Channel concepts and thus appears > > > in a T11 document, FC-BB-2, ftp://ftp.t11.org/t11/pub/fc/bb-2/02-030v1.pdf. > > > See Figure 23 on PDF page 87, or Figure 26 on PDF page 94. > > > > > > Thanks. > > > > > > .Ralph > > > > > > "Mallikarjun C." wrote: > > > > > > > > > > > Ralph, > > > > > > > > > http://www.ietf.org/internet-drafts/draft-ietf-ips-fcip-wglc-01.pdf > > > > .... > > > > > Please review these comments resolutions to ensure that > > > > > the desired changes are described. > > > > > > > > Sorry for the delayed review, I have additional comments on wglc-01 > > > > for Comment 120. > > > > > > > > Regards. > > > > -- > > > > Mallikarjun > > > > > > > > Mallikarjun Chadalapaka > > > > Networked Storage Architecture > > > > Network Storage Solutions Organization > > > > Hewlett-Packard MS 5668 > > > > Roseville CA 95747 > > > > cbm@rose.hp.com > > > > > > > > >Comment 120 > > > > >> 8. The FCIP Special Frame > > > > >...... > > > > >> Note: The combination of the Source FC Entity World Wide Name and > > > > >> Source FCIP Entity Identifier fields uniquely identifies every FC > > > > >> Entity FCIP Entity pair in the IP Network. > > > > >.... > > > > >- Also I take it that the "FC/FCIP Entity Identifier" is unique only > > > > >within the scope of the given FC Entity's WWN. So, does the model > > > > >allow multiple FCIP Entities to be associated with the FC Fabric > > > > >Entity WWN? > > > > >.... > > > > >Response to the second bullet: Yes, the "FC/FCIP Entity Identifier" > > > > >is unique only within the scope of the given FC Entity's WWN. Yes, > > > > >the model allows multiple FCIP Entities to be associated with the FC > > > > >Fabric Entity WWN. > > > > > > > > > > > > > If that is so, please add an architectural model diagram (similar to > > > > Figure 3, or perhaps convert Figure 3 into) which clearly shows this > > > > 1-to-n association. > > > > > > > > This is the only hint in the document (at least that I found) which > > > > suggests the stated possibility. Figure 3 with 1-to-1 association almost > > > > seemed like the architectural model, but on careful reading, is only > > > > an example. > > > > > > >
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