From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Wed Oct 13 2004 - 14:18:19 GMT-3
Better yet that you can't remove a line out of a numbered access-list
without destroying and recreating the entire list. (you can)
"no arp frame-relay" stops inverse-arp replies (it doesn't)
ppp authentication is a two way process (it's not)
Don't start listing these behaviors as "gotchas" though, they
are simply technologies that the fundamental behaviors are
misunderstood. Most of these "myths" can be eliminated by simply trying
the configuration out and seeing how it works firsthand on the command
line.
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Gene Thorne
> Sent: Wednesday, October 13, 2004 12:12 PM
> To: ccielab@groupstudy.com
> Subject: RE: Something New (the myths we believe)
>
> My favorite myth is that static routes pointing to an interface have
an
> admin distance of 0, not 1.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Joe Rinehart
> Sent: Wednesday, October 13, 2004 12:02 PM
> To: ccielab@groupstudy.com
> Subject: Something New (the myths we believe)
>
>
> Just when you think you have things halfway figured out you realize
how
> far
> off your perceptions can be. I had two "revelations" while working on
the
> Netmaster DoIt lab #1 (its pretty grueling, in a good way). There
were
> two
> things that really bit me because I thought I knew these for
certain....
>
> Myth#1 A Catalyst 3550 cannot do BGP.
>
> When the lab asked for this I thought it was a joke, and to be honest
I
> cannot remember where I picked this idea up, but a quick check on the
doc
> CD
> and I found my face turning red (proverbially speaking). I think I
was
> relying on a "features not supported" on one of the CCIE Cisco Press
study
> books... In any case there are some limitations but it does indeed
> support
> BGP....
>
> Myth#2 Subinterfaces cannot coexist with natural interfaces on the
same
> physical interface.
>
> This one blew me away. When I read the question I figured it was one
of
> those "trick answers" that just had to be interpreted, so I did a
> multipoint
> subinterface and a point to point subinterface. When I was working
though
> the answer key I was rather taken aback to see that it was on the
physical
> interface. Still a skeptic, I removed the multipoint subinterface,
put
> the
> code on the main interface (leaving the P2P subif) and then reloaded
the
> router. I was shocked it worked.
>
> I think my reason for posting this is just to see if there have been
any
> other experiences like this for other folks and what those assumptions
> were.
> After all, there is a saying about assume.....
>
> Joe Rinehart, CCNP, CCDP
> Data Network Consultant, AT&T Corporation
> Pacific Northwest Enterprise Markets
>
>
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