Symon Thurlow wrote: > > How do you nag a packet? Infact, is it not an oxymoron? > > To nag is to continually pester or annoy, yet a packets > lifetime is > normally measured in milliseconds, therefore she must be one > hell of a > nagger!
You can get a lot of nagging done in a millisecond! ;-) These days we have firewalls that have to understand TCP sequence and ACK numbers, for heaven's sake. And we have IDSs that look at the parameters to HTTP GET commands. Not to mention devices that switch packets based on payload content, i.e. a L7 switch!? Argh. And those are just a few of the stop-off points for a packet. I haven't even mentioned the routers and L2 switches!? All I can say is that it's a good thing we have so much bandwidth and such high-speed CPUs. Priscilla > > Ok, it's late, I'll stop. > > Symon > > -----Original Message----- > From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED] > Sent: 25 February 2003 22:27 > To: [EMAIL PROTECTED] > Subject: Re: L3 Switching Huh???? [7:63728] > > > At 7:34 PM +0000 2/25/03, Bob Sinclair wrote: > >Charles, > > > >Regarding the meaning of the term "switch", let me quote a > few lines > >from my favorite Net Goddess, Radia Perlman. She wrote the > DEC STP > >protocol and has been very active in protocol development > since day > >one. In her book, Interconnections, she says the following: > > > >"One cynical (and ungrammatical) definition I use for switch > is 'a > marketing > >term that means fast'" p. 127 > > > >She goes on to suggest that the term switch should be used for > "a box > >that moves data." > > Seriously, the preferred IETF approach is to deal separately > with > control (e.g., routing protocol) and forwarding planes. Control > planes populate RIBs optimized for updating by routing > protocols, and > create FIBs optimized for doing fast destination lookup on > forwarding > elements. > > > > >She further suggests that we get into the habit of specifying > as > >follows: > > > >Layer 1 switch = hub > >Layer 2 switch = bridge > >Layer 3 switch = router > > > >Strongly recommend her book. The lady has a lot of style. > > > > I don't remember if she's still doing a protocol design seminar > as > she used to do at Interop, but she's a delightful speaker, once > you > get used to the idea of somebody being a stereotyped New York > Jewish > Mother nagging packets. > ============================================= > > This email has been content filtered and > subject to spam filtering. If you consider > this email is unsolicited please forward > the email to [EMAIL PROTECTED] and > request that the sender's domain be > blocked from sending any further emails. > > ============================================= > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63814&t=63728 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
