job screening question

Ramanpreet Singh sikandar.raman at gmail.com
Thu Jul 5 23:36:48 CDT 2012


Aaawwe

On Jul 5, 2012 7:10 PM, "Randy" <randy_94108 at yahoo.com> wrote:

> --- On Thu, 7/5/12, William Herrin <bill at herrin.us> wrote:
>
> > From: William Herrin <bill at herrin.us>
> > Subject: Re: job screening question
> > To: "Jon Lewis" <jlewis at lewis.org>
> > Cc: "nanog at nanog.org" <nanog at nanog.org>
> > Date: Thursday, July 5, 2012, 6:43 PM
> > On Thu, Jul 5, 2012 at 9:28 PM, Jon
> > Lewis <jlewis at lewis.org>
> > wrote:
> > > You've never (much less recently) seen a customer
> > misconfigure their end of
> > > an ethernet handoff such that you end up with duplex
> > mismatch? Granted, in
> > > that case, distance is irrelevant...but it is half
> > half-duplex ethernet :)
> >
> > If I was asking an ethernet question, I'd rather ask:
> >
> > 1. How do you make a crossover ethernet cable to connect two
> > switches?
> > (cross the green and orange pairs)
> >
> > 2. What happens if you plug that cable into a pair of
> > gigabit ethernet
> > switches? (mdix malfunctions, ports negotiate to 100 full,
> > on some
> > poorly implemented switches the mix of straight and crossed
> > wires
> > eventually damage the ports so they can no longer do gige)
> >
> > Regards,
> > Bill Herrin
>
>
> Or for that matter, in the absence of auto-MDI/MDIX:
>
> 1) when is a straight-through cable *required*?
> 2) when is a cross-over cable *required*?
>
> How about another HR-Question:
>
> what do 0.0.0.0/1 and 128.0.0.0.0/1 as static-routes accomplish?
>
> ./Randy
>
>


More information about the NANOG mailing list