From: Keith Foster (kfoster@xtelesis.com)
Date: Sat Jan 04 2003 - 18:31:50 GMT-3
Yes, 2500's support 12.2 IOS. I have it loaded on mine for a while now.
----- Original Message -----
From: "Ludwig Morales" <morales_l@hotmail.com>
To: "Joe" <groupstudy@comcast.net>; "'Chuck Church'"
<ccie8776@rochester.rr.com>; "'Matthew Poole'"
<matthew.poole@blueyonder.co.uk>; "'cebuano'" <cebu2ccie@cox.net>;
<ccielab@groupstudy.com>
Sent: Friday, January 03, 2003 10:44 PM
Subject: Re: IOS lab version - Was: Clarification needed on BGP and MEDs
> What? do you mean that 2500's do not support 12.2?
> DAMM!! who wants a rack 4 sell?
>
>
> ----- Original Message -----
> From: "Joe" <groupstudy@comcast.net>
> To: "'Chuck Church'" <ccie8776@rochester.rr.com>; "'Matthew Poole'"
> <matthew.poole@blueyonder.co.uk>; "'cebuano'" <cebu2ccie@cox.net>;
> <ccielab@groupstudy.com>
> Sent: Friday, January 03, 2003 11:17 PM
> Subject: RE: IOS lab version - Was: Clarification needed on BGP and MEDs
>
>
> > They won't be able to go to 12.2 until all the labs can support it, i.e.
> > they have replaced all 2500s with 2600s. Once that is done, you can bet
> > you'll see 12.2 regardless of whether it is GD or not.
> >
> > Joe
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Chuck Church
> > Sent: Friday, January 03, 2003 1:03 PM
> > To: Matthew Poole; cebuano; ccielab@groupstudy.com
> > Subject: IOS lab version - Was: Clarification needed on BGP and MEDs
> >
> >
> > Matt,
> >
> > Yes, it's still 12.1. BUT, 12.2 is probably within 5 months of
> > becoming GD. So the lab would soon follow that, I'd imagine. If I was
> > planning to take my lab towards October or so of this year, it might not
> > be a bad idea to know some 12.2 features now. Looking at CCO, 12.1
> > became GD at 12.1.13 in Feb 2002. But it was on the lab in Nov
> > 2001.....
> >
> > Chuck Church
> > CCIE #8776, MCNE, MCSE
> >
> >
> > ----- Original Message -----
> > From: "Matthew Poole" <matthew.poole@blueyonder.co.uk>
> > To: "cebuano" <cebu2ccie@cox.net>; <ccielab@groupstudy.com>
> > Sent: Friday, January 03, 2003 11:29 AM
> > Subject: OT:Re: Clarification needed on BGP and MEDs
> >
> >
> > > I thought the lab only tested on features up to 12.1?
> > >
> > http://www.cisco.com/en/US/partner/learning/le3/le2/le23/le7/learning_ce
> > rtif
> > > ication_type_home.html#42
> > >
> > > This is the 2nd post today referring to 12.2, a little worrying ;-).
> > >
> > > ----- Original Message -----
> > > From: "cebuano" <cebu2ccie@cox.net>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Friday, January 03, 2003 3:04 PM
> > > Subject: RE: Clarification needed on BGP and MEDs
> > >
> > >
> > > > Well, if you haven't noticed yet, the Parkhurst book you are
> > > > referring to has MANY, MANY technical info NOT included, specially
> > > > since it was written pre-12.2 and does not present the topic from an
> >
> > > > ISSUES perspective but simply to test the different commands. Don't
> > > > forget to also check its errata on Ciscopress because I've exchanged
> >
> > > > e-mails with the author to confirm the errors I found both in this
> > > > book and the OSPF command reference book as well.
> > > >
> > > > Regards.
> > > >
> > > > -----Original Message-----
> > > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> >
> > > > Of Jennifer Bellucci
> > > > Sent: Friday, January 03, 2003 1:38 AM
> > > > To: cebuano; ccielab@groupstudy.com
> > > > Subject: Re: Clarification needed on BGP and MEDs
> > > >
> > > > get hold of BGP config and command handbook from ciscopress. Did
> > > > wonders for me, after that flick through halabi and JD 2, those
> > > > books are good for the
> > > > concepts and stuff but the book above gives you what I wanted, to
> > find
> > > > out
> > > > what all the commands actually do, plus reading the command guide
> > can
> > > > sometimes damage your mental stability.
> > > > ----- Original Message -----
> > > > From: "cebuano" <cebu2ccie@cox.net>
> > > > To: <ccielab@groupstudy.com>
> > > > Sent: Friday, January 03, 2003 5:46 AM
> > > > Subject: Clarification needed on BGP and MEDs
> > > >
> > > >
> > > > > Hi group.
> > > > > I need to clarify my reading of this CCO page.
> > > > >
> > > > > The following examples demonstrate how the bgp deterministic med
> > > > > and
> > > > bgp
> > > > > always-compare-med commands can influence MED-based path
> > > > > selection.
> > > > > Note: Cisco Systems recommends enabling the bgp deterministic med
> > > > > command in all new network rollouts. For existing networks, the
> > > > command
> > > > > must either be deployed on all routers at the same time, or
> > > > > incrementally, with care to avoid possible internal BGP (iBGP)
> > > > > routing loops. For example, consider the following routes for
> > > > > network 10.0.0.0/8:
> > > > > entry1: AS(PATH) 500, med 150, external, rid 172.16.13.1
> > > > > entry2: AS(PATH) 100, med 200, external, rid 1.1.1.1
> > > > > entry3: AS(PATH) 500, med 100, internal, rid 172.16.8.4 The order
> > > > > in which the BGP routes were received is entry3, entry2, and
> > > > > entry1 (entry3 is the oldest entry in the BGP table and entry1 is
> > > > > the newest one).
> > > > > Note: When BGP receives multiple routes to a particular
> > > > > destination,
> > > > it
> > > > > lists them in the reverse order they were received, from the
> > > > > newest to the oldest. BGP then compares the routes in pairs
> > > > > starting with the newest entry and moving toward the oldest entry
> > > > > (starting at top of
> > > > the
> > > > > list and moving down). For example, entry1 and entry2 are
> > > > > compared.
> > > > The
> > > > > best of these two is then compared to entry3, and so on.
> > > > >
> > > > > Example 1: Both Commands Disabled
> > > > >
> > > > > Entry1 and entry2 are compared first. Entry2 is chosen as the best
> >
> > > > > of these two because it has a lower router ID. The MED is not
> > > > > checked
> > > > since
> > > > > the paths are from a different neighbor AS.
> > > > > Shouldn't example 1 instead say, "Entry2 is chosen as the best of
> > > > these
> > > > > two because it has an OLDER received path"?
> > > > > Step 10 of the BGP Bestpath Selection states.
> > > > > "When both paths are EXTERNAL, prefer the OLDEST path." Isn't
> > > > > Entry2 "older" than Entry1? Or is something wrong with my
> > > > > understanding of this English?
> > > > >
> > > > > TIA.
> > > > > Elmer
> > > > >
> > > > > BTW - do you guys/gals have a recommendation on very good lab
> > > > scenarios
> > > > > to bring the true IOS behavior of these different BGP "knobs" to
> > > > > life? There are so many changes to the 12.2 release that it makes
> > > > > me not
> > > > want
> > > > > to dwell too much on Halabi's book. I wish Doyle had THREE
> > > > > chapters on this instead of two (pity he spent three chapters on
> > > > > Multicast
> > > > instead).
> > > > > .
> > > > .
> > > > .
> > > .
> > .
> .
.
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