From: dhoang4@yahoo.com
Date: Fri Nov 07 2003 - 15:50:05 GMT-3
don't sign up for certificationzone. you will waist
your money. you can read all of this topic from cco. i
used to be a member of the zone so i know. most of
writters of this site are nortel guys some cisco guys,
so you will not get much helpful info from this site.
--- ccie2be <ccie2be@nyc.rr.com> wrote:
> My bad, I probably clicked the wrong button - reply
> instead of reply all.
>
> That CertificationZone looks like it will be very
> helpful. I'm going to
> sign up.
>
> Thanks, dt
>
>
> ----- Original Message -----
> From: "Howard C. Berkowitz" <hcb@gettcomm.com>
> To: "ccie2be" <ccie2be@nyc.rr.com>
> Sent: Friday, November 07, 2003 12:37 PM
> Subject: Re: Relative Importance of ISIS
> (Metric-style command)
>
>
> > >Hi Howard,
> > >
> > >Thanks for getting back to me. I'm especially
> impressed that among all
> the
> > >folks on GS, you would take the time to respond
> to my post. (It's been
> > >rumored that you're one of the top
> internetworking guru's out there even
> > >though you don't have a ccie. I've heard that
> you're involved in writing
> > >those RFC's that end up being implemented by
> various vendors.)
> > >
> > >So, you're thinking of creating a ISIS study aid?
> How do I sign up to
> get
> > >one of the first copies? Given the leaky bucket
> that passes as my brain,
> I
> > >need all the study aids I can get.
> >
> > There's a two-part ISIS guide, written by Peter
> van Oene, at
> > Certificationzone.com, as well as multipart OSPF
> and BGP guides I
> > wrote. The comparison chart is something I expect
> to write in the
> > next month or so.
> >
> > >
> > >On a more serious note, I'm trying to better
> understand how to know when
> I
> > >need to change the metric style from it's
> default, narrow, to wide.
> >
> > See Abe Martey's _ISIS Network Design Solutions_
> (Cisco Press), p
> > 173-4, p 222-225.
> >
> > Now that this is said, I have to make a timeout
> signal. When I
> > discuss this sort of thing with the community at
> large, I make a
> > point of doing it on the Groupstudy list, so
> others can benefit and
> > others can contribute. Priscilla has the same
> philosophy, and goes
> > further than I do in using a posting-only email
> address. Peter knows
> > ISIS better than I do, and might have other
> insights.
> >
> > More than anything, it's a scalability issue. If I
> allow myself to
> > get into individual discussions with lots of
> people, outside the
> > context of a contract or something like the IETF,
> I start running out
> > of time to do billable things -- not that I have
> as much of that as
> > I'd like. The economy sucks everywhere.
> >
> > >I've
> > >looked at the command reference but it didn't
> answer that question except
> to
> > >say it's needed when doing MPLS traffic
> engineering. Does that mean, if
> > >MPLS isn't running, the metric style can always
> be left at it's default
> > >value? Also, do all ISIS routers in a network
> have to run the same
> metric
> > >style for networking to work properly? Lastly, if
> I'm not running the
> right
> > >metric style, how would I know? What would the
> symptoms look like?
> > >
> >
>
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/swt
> ch_r/swi_m1.htm#1060108
> > >
> > >As a side note, why doesn't the command show up
> in the 12.2 command
> > >reference even though it was introduced in 12.0?
> >
> > Cisco moves in mysterious ways.
> >
> > >
> > >12.2 ISIS command reference:
> > >
> >
>
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fip
> rrp_r/1rfisis.htm
> > >
> > >thanks again for getting back to me. dt
> > >
> > >
> > >----- Original Message -----
> > >From: "Howard C. Berkowitz" <hcb@gettcomm.com>
> > >To: <ccielab@groupstudy.com>
> > >Sent: Friday, November 07, 2003 10:05 AM
> > >Subject: Re: Relative Importance of ISIS
> > >
> > >
> > >> At 8:41 AM -0500 11/7/03, ccie2be wrote:
> > >> >Hi group,
> > >> >
> > >> >I'm trying to decide how much time to spend
> on IS-IS. I understand
> the
> > >basics
> > >> >and can configure level I and II areas and
> can set up a simple multi
> area
> > >ISIS
> > >> >network, but I'm weak on all the more
> advanced stuff. I have only a
> > >couple
> > >> >weeks left before the lab and I also want to
> review and practice QoS,
> > >Voice,
> > >> >and ATM.
> > >> >
> > >> >Compared to those other 3 topics, how much
> time should I spend
> practicing
> > >> >ISIS? By way of comparison, I'm very strong
> on OSPF. How important
> is
> > >it
> > >> >that I be just as strong on ISIS as I am on
> OSPF?
> > >>
> > >> Let me answer indirectly. It would enhance
> your understanding of
> > >> both ISIS and OSPF to make a matrix of general
> protocol functions
> > >> (e.g., neighbor establishment, database
> synchronization, flooding,
> > >> DR/pseudonode election, etc.) and then make a
> matrix with a brief
> > >> note on how OSPF and ISIS each do it. You'll
> find the protocols tend
> > >> to have functions in common, but quite
> different detailed
> > >> implementation. You might even do just a
> single column about how
> > >> ISIS differs from OSPF (e.g., single
> pseudonode/DIS rather than
> > >> DR/BDR, or that ISIS L1 areas are equivalent
> to OSPF totally stubby
> > > > areas).
> > >>
> > >> It's a tossup whether you need to be as strong
> in ISIS. A lot of the
> > >> complexity in ISIS deals with ISP-oriented
> tuning or traffic
> > >> engineering. One of the reasons OSPF is
> preferred in enterprises is
> > >> that it has a lot more
> policy/summarization/area options, which ISPs
> > >> generally don't need. THe real question is how
> much you'd expect
> > >> Cisco to test for ISP-oriented features, which
> they don't teach in
> > >> their general classes, in the fundamentally
> enterprise-oriented
> > >> CCIE/R&S.
> > >>
> > >> >
> > >> >Also, do people think it's worthwhile to
> learn all the details of all
> the
> > >> >tuning parameters of which there seem to be
> many?
> > >> >
> > >>
> > >> Funny you should mention that, because I've
> been working on some
>
=== message truncated ===
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This archive was generated by hypermail 2.1.4 : Fri Dec 12 2003 - 12:29:09 GMT-3