Re: Common operational misconceptions

[Joel jaeggli <joelja () bogus com>]

On 2/15/12 21:04 , Kenneth M. Chipps Ph.D. wrote:
> How widespread would you say the use of IS-IS is?
>
> Even more as to which routing protocols are used, not just in ISPs, what
> percent would you give to the various ones. In other words X percent of
> organizations use OSPS, Y percent use EIGRP, and so on.

Using EIGRP implies your routed IGP dependent infrastructure is a
monoculture. That's probably infeasible without compromise even if you
are largely a Cisco shop.

ISIS is used in organizations other than ISPs.

> -----Original Message-----
> From: Antti Ristimäki [mailto:antti.ristimaki () gmx com] 
> Sent: Wednesday, February 15, 2012 10:47 PM
> To: John Kristoff
> Cc: nanog () nanog org
> Subject: Re: Common operational misconceptions
>
> "IS-IS is a legacy protocol that nobody uses"
>
>
> 15.02.2012 22:47, John Kristoff kirjoitti:
> > Hi friends,
> >
> > As some of you may know, I occasionally teach networking to college 
> > students and I frequently encounter misconceptions about some aspect 
> > of networking that can take a fair amount of effort to correct.
> >
> > For instance, a topic that has come up on this list before is how the 
> > inappropriate use of classful terminology is rampant among students, 
> > books and often other teachers.  Furthermore, the terminology isn't 
> > even always used correctly in the original context of classful addressing.
> >
> > I have a handful of common misconceptions that I'd put on a top 10 
> > list, but I'd like to solicit from this community what it considers to 
> > be the most annoying and common operational misconceptions future 
> > operators often come at you with.
> >
> > I'd prefer replies off-list and can summarize back to the list if 
> > there is interest.
> >
> > John