Re: mls Qos

It's all fun and games until you have to take over someone's ATM LANE
rat's nest....

Re: mls Qos

Larry Hadrava
to:
Narbik Kocharians
07/26/09 03:19 PM

Sent by:
nobody_at_groupstudy.com
Cc:
Anthony Sequeira, kaniyath minha, Cisco certification
Please respond to Larry Hadrava

I think that while studying for the lab - there are a lot of "bad habits"
that can develop. A lot of folks tend to err on the side of caution and
throw extra or unneeded configuration in "just in case" when in fact if
you
take the extra time to know and understand what the "just in case"
commands
actually are doing then there would not be a "just in case".

I always love going into a companies network to do some work and seeing
that
"guy that was there before" was studying for the lab!!!

Thanks
Larry Hadrava
CCIE #12203 CCNP
Sr. Support Engineer  IPexpert, Inc.
URL: http://www.IPexpert.com

On Sun, Jul 26, 2009 at 1:16 PM, Narbik Kocharians
<narbikk_at_gmail.com>wrote:

> hahahahaha
>
> I am with you on that.
>
> On Sun, Jul 26, 2009 at 10:12 AM, Anthony Sequeira <asequeira_at_ine.com
> >wrote:
>
> > Yes - and let me clarify - I never have my students insert commands
> "brute
> > force".
> >
> > For example, entering MLS QOS on all switches at the beginning of the
> lab.
> > :-)
> >
> > Another one that turns my stomach is adding next-hop-self to every
> peering
> > in BGP.
> >
> > Warmest Regards,
> >
> > Anthony J. Sequeira, CCIE #15626
> > http://www.INE.com <http://www.ine.com/> <http://www.ine.com/>
> >
> > On Jul 26, 2009, at 1:00 PM, Narbik Kocharians wrote:
> >
> > Remember,
> >>
> >> If hosts should retain their marking, and you enable "MLS QOS" you
will
> >> effect their traffic, so i would recommend enabling it ONLY when you
> need
> >> to
> >> apply QOS of any kind.
> >> Always remember, whenever you configure a router or a switch you
should
> >> ask
> >> yourself why am i using this command or this keyword, Do i need it?
if
> the
> >> command that you are configuring is required, go for it, if NOT, you
> >> should
> >> NOT. You should make that a habit.
> >> BTW, i am NOT picking on Anthony, he is an excellent instructor, i am
> ONLY
> >> stating my opinion.
> >>
> >> On Sun, Jul 26, 2009 at 9:43 AM, Anthony Sequeira <asequeira_at_ine.com>
> >> wrote:
> >>
> >> Yeah, this is definitely one of those commands that you should
insert
> in
> >>> the configuration whenever you are in doubt. It should not penalize
you
> >>> if
> >>> in fact it was not required.
> >>>
> >>> Also, thinking ahead to troubleshooting Cisco gear, you can
definitely
> >>> envision this as one that would be missing from a pre-configured
> switch.
> >>> :-)
> >>>
> >>> Warmest Regards,
> >>>
> >>> Anthony J. Sequeira, CCIE #15626
> >>> http://www.INE.com <http://www.ine.com/> <http://www.ine.com/> <
> http://www.ine.com/>
> >>>
> >>>
> >>> Test your Core Knowledge today!
> >>> Q: Four NAT terms are used to describe IP addresses in a NAT
scenario.
> >>> The
> >>> address of HostB (an outside host) as it is seen on the outside
network
> >>> is
> >>> typically referred to as which term?
> >>> A: The Outside Global Address
> >>> More Info:
> >>>
> >>>
>
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a00800

94831.shtml
> >>>
> >>>
> >>>
> >>> On Jul 26, 2009, at 1:07 AM, kaniyath minha wrote:
> >>>
> >>> Dear
> >>>
> >>>>
> >>>> where mls qos should enable and where it is not required..its
> confusing
> >>>> me.
> >>>>
> >>>> Is Police require it or not?
> >>>>
> >>>> please give in detail.
> >>>>
> >>>> thanks and regards
> >>>>
> >>>>
> >>>> Blogs and organic groups at http://www.ccie.net
> >>>>
> >>>>
> _______________________________________________________________________
> >>>> Subscription information may be found at:
> >>>> http://www.groupstudy.com/list/CCIELab.html
> >>>>
> >>>>
> >>>
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> >>>
> >>>
Received on Sun Jul 26 2009 - 19:44:27 ART