At 05:58 PM 6/18/02, nrf wrote: >There it is, I did not engage in a rush to judgment
It was still a rush. ;-) >, PMG really are idiots. Why don't you both take the class and see for yourselves? Judging someone on an outline is awfully superficial. The founder of Pine Mountain Group has been doing protocol analysis since the early 1980s. I'm sure he knows what he's doing. Many experts would bundle multicasts and broadcasts together in an informal, overview discussion. I'm sure if you take the class, they will explain that CDP, BPDU, and HSRP Hellos are really sent to a multicast destination, and that should improve performance. Since their classes are protocol analysis classes, you'll see for yourself what is used in the destination MAC address field. By the way, I say "should improve performance," but it might not. A lot of NICs are stupid about multicasts and take them all in even if the applications have not registered to receive them. In other words, they interrupt the host CPU for irrelevant multicasts. So when talking about network performance in a non-detailed fashion, it's OK to group broadcasts and multicasts. Priscilla >""Brian Backer"" wrote in message >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Priscilla, > > > > Please see: > > > > http://www.pmg.com/nai_wireless.htm > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of > > Priscilla Oppenheimer > > Sent: Tuesday, June 18, 2002 5:06 PM > > To: [EMAIL PROTECTED] > > Subject: Re: STP BPDUs [7:46839] > > > > At 04:43 PM 6/18/02, nrf wrote: > > >""Brian Backer"" wrote in message > > >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > I totally believe you all...just I used to Think that Pine > > > > Mountain group knew what they were talking about and their > > > > web site classifies all of the below as bcast. perhaps > > > > I'll let them know :) > > > > thanks > > > > > >Well, then the Pine Mountain Group are a bunch of incompetent idiots. > > > > I've been running into Pine Mountain Group for many years and slightly > > know > > the founder Bill Alderson. They do good work and they do know their > > stuff. > > I doubt they actually made this mistake, but if they did, then it's just > > a > > mistake of overgeneralizing. Perhaps they only have 2 categories, > > broadcast > > and unicast, and don't consider multicasts. > > > > I know I'm normally the one to get all outraged by stupid mistakes, but > > until we can actually see a URL that points to a mistake made by Pine > > Mountain Group, we should reserve judgement. I can't find anything on > > their > > Web site that says that BPDUs, CDP, or HSRP hellos go to a broadcast > > rather > > than a multicast. In fact, I can't find anything on their site at all > > that > > doesn't require a login! ;-) > > > > Priscilla > > > > > > >I don't want to be mean and harsh. But any company that claims to > > provide > > >expert network services, especially expert training, really should know > > >their protocols. Or at least have the decency to admit that they > > don't > > >know. Stating something that is just flatly wrong is simply > > unforgiveable, > > >especially when it's so easy to look up. > > ________________________ > > > > Priscilla Oppenheimer > > http://www.priscilla.com ________________________ Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=46938&t=46839 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
