>>> SNIP The RIF is just referenced (not changed) in frames that are specifically routed. In other words, once the end station has found a route, it just puts it in the frame and the bridges just read it forwards or backwards and route accordingly.
Could that be what he's getting at?? >>> END SNIP I'm not sure what he's getting at really. I agree with your explanation above but also this would be the same process for a pure SRB also !!! I think it is fair to say that a Transparent bridge never adds or removes RIFS since it doesn't use one. But to use the expression in a SRT or SR/TL bridge is misleading and very confusing without a bit of an explanation of route selection. Thanks for the link. Fun with it ??? Doubtful. Phil. http://standards.ieee.org/getieee802/ > > Have fun with it! > --- Priscilla Oppenheimer wrote: > At 08:34 AM 3/6/02, Phil Barker wrote: > >Just been re-reading this paper by David Wolfsener. > >See SNIP below. > > > >In the instance where the RII indicator is a 1 the > >frame will be 'source routed' if the frame is > 'source > >routed' then surely this implies that the RIF must > be > >manipulated in order to reflect the true Source > Route > > The RIF is just referenced (not changed) in frames > that are specifically > routed. In other words, once the end station has > found a route, it just > puts it in the frame and the bridges just read it > forwards or backwards and > route accordingly. > > Could that be what he's getting at?? > > On the other hand, I agree with you that on an > explorer, an SRT bridge > changes the RIF. SRT simply implies a couple things: > > 1) If the RII is zero, just perform normal > Ethernet-style transparent > bridging > > 2) If the RII is one and redundant bridges exits, > use the spanning tree to > determine which way to forward explorer frames. > > By the way, SRT is the only form of source route > bridging that the IEEE > ever standardized. And you can get it for free! ;-) > It's in Annex C of IEEE > 802.1D, which you can get here: > > http://standards.ieee.org/getieee802/ > > Have fun with it! > > Priscilla > > >!!! I havn't got my 'Interconnections' with me so I > >cannot confirm. > > > >Any ideas ? > > > >Phil. > > > > >>> SNIP > > > >Source Route Transparent Bridging (SRT) > > > >SRT works by analyzing the RII bit to determine if > a > >RIF is present. If the RII bit is 0, then a RIF is > not > >present and the frame is transparently bridged. If, > >however, the RII bit is 1 and a RIF is present, > then > >the frame is source routed. Note that SRT bridges > do > >not add or remove RIFs to frames. By now, you ought > to > >wonder how to configure SRT. > > > > >>> END > > > >__________________________________________________ > >Do You Yahoo!? > >Everything you'll ever need on one web page > >from News and Sport to Email and Music Charts > >http://uk.my.yahoo.com > ________________________ > > Priscilla Oppenheimer > http://www.priscilla.com [EMAIL PROTECTED] __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37535&t=37393 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
