Re: Stubborn router.

From: Pavel Bykov <slidersv_at_gmail.com>
Date: Tue, 21 Apr 2009 16:42:40 +0200

"it's a new building, some floor may fall" :)
Or, "it's a new plane, it may dive ocasionally 5000 feet".

Actually, that does happen all the time as well. It's just that we,
cunsumers, fly old and tested airplanes and live in the buildings
constructed using time-tested techniques. It's like running ten years old
General Deployment IOS release.

Haven't seen my latest Airbus doing loops or hyperspace tunnels - just plain
ol' flying from A to B. And my building is not exactly digital - no LEDs for
displaying direction where I, as a person, should go, no LCD walls
displaying scenery, no light gaze for pleasruing morning effect in the
hallways, no dimming windows... all the features that are in "T" IOS train
:)

On Sun, Apr 19, 2009 at 5:07 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar>wrote:

> I was not referring to something in particular.
> I do teach classes, and courses tend to have features that are bug prone:
> -new features are exercised
> -bad configurations are usually made, cause people are just learning them
>
> But it used to be the case that a reload was not one of the tools you
> would resort to for fixing things. Not a common one at least.
> Last week, it fixed 5 issues!
> And... it is kind of stressfull, cause you look ate the config and you
> think "it should be working" but it is not :(
> When you tell someone "try reloading", it's not the best message about
> quality of product, so to say :(
>
> We are getting accustomed to "it's a new feature, bugs may be there".
> Imagine something like "it's a new building, some floor may fall" :)
> Or, "it's a new plane, it may dive ocasionally 5000 feet".
> Wait! I saw that one somewhere :)
>
> -Carlos
>
> Paul Cosgrove @ 19/04/2009 10:16 -0200 dixit:
> > Hi Carlos,
> >
> > What kind of issues are you referring to? Are you using FFF (flaky
> > fancy features)?
> >
> > To be honest I do not think I have seen another (accidental) problem
> > which required a reload, so thought this one quite unusual. I do reload
> > sometimes to remove frame relay inverse arp entries, but have also found
> > that removing the commands deletes those, at least in new IOS versions.
> > My guess is that removing OSPF would have fixed the problem in this case
> > as well, but a reload was slightly less effort. :-)
> >
> > Bugs are inevitable in complex software, but I've always found the
> > mature releases of IOS solid enough. Where significant changes are
> > introduced, bugs are likely to be more frequent - and as you would
> > expect that seems to be the case with some of the newer code rewrites
> > (e.g. early modular releases).
> > Paul.
> >
> > Carlos G Mendioroz wrote:
> >> Anyone noticing a "tendency" here ?
> >> I very seldom resort to reload for fixing things, but latelly it IS
> >> working more and more. This is a pitty.
> >>
> >> MS$ has made us so accustomed to fix by reloading that we care less and
> >> less about this. We even have jokes about that (fixing a non functioning
> >> MS car by stepping out and back in :)
> >>
> >> -Carlos
> >>
> >> Narbik Kocharians @ 18/04/2009 13:24 -0200 dixit:
> >>
> >>> Were you running Vista or NT?
> >>>
> >>> hahahaha just joking man. It has happened to me once on 12.4(19), i
> >>> had to
> >>> reload to get things going.
> >>>
> >>> On Sat, Apr 18, 2009 at 8:35 AM, Paul Cosgrove
> >>> <paul.cosgrove_at_gmail.com>wrote:
> >>>
> >>>
> >>>> Yes only on the hub router. Entered the commands and checked with
> >>>> "show ip
> >>>> ospf nei" but it showed no neighbor entries (no lines, regardless of
> >>>> adj
> >>>> state). Deleted the two neighbor config lines (or at least tried
> >>>> to) and
> >>>> re-entered the same commands and the neighbors are then recognised,
> >>>> forming
> >>>> full adjacencies. I then had duplicate lines in the config for each
> >>>> neighbor.
> >>>>
> >>>> The router allowed me to remove the duplicate entries, but the
> >>>> original two
> >>>> lines could not be removed. I reloaded a few minutes after it
> >>>> happened and
> >>>> it has been fine since, but just thought it was an interesting bug.
> >>>>
> >>>> Paul.
> >>>>
> >>>>
> >>>> Narbik Kocharians wrote:
> >>>>
> >>>>
> >>>>> Paul,
> >>>>>
> >>>>> Are you configuring the neighbor commands on the HUB?
> >>>>>
> >>>>> On Sat, Apr 18, 2009 at 6:53 AM, Ahsan Mohiuddin
> >>>>> <ahsan.mohiuddin_at_gmail.com>wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>> Yes we have seen this. Try rebooting the router; do the neighbor
> >>>>>> commands
> >>>>>> disappear? And while rebooting you see an error like "OSPF neighbor
> >>>>>> command
> >>>>>> is allowed only on non-broadcast interfaces". I think I saw it on
> >>>>>> 12.4(17)
> >>>>>>
> >>>>>> On Fri, Apr 17, 2009 at 10:54 PM, Paul Cosgrove
> >>>>>> <paul.cosgrove_at_gmail.com
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>> wrote:
> >>>>>>> Just tried a simple topology with a hub and spoke
> non-broadcast
> >>>>>>> ospf
> >>>>>>> network. The neighbor commands did not take effect the first time
> >>>>>>> around
> >>>>>>> (no neighbors listed) and clearing ospf had no effect. To fix it I
> >>>>>>> tried
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>> to
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>> remove and reapply the neighbor commands. Neighbor relationships
> >>>>>>> are
> >>>>>>> now
> >>>>>>> formed, but it has left me with an interesting configuration. I
> >>>>>>> guess
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>> my
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>> router is being a little stubborn today. :-)
> >>>>>>>
> >>>>>>> router ospf 1
> >>>>>>> log-adjacency-changes
> >>>>>>> network 141.1.0.0 0.0.0.255 area 1
> >>>>>>> network 141.1.123.0 0.0.0.255 area 0
> >>>>>>> network 150.1.2.0 0.0.0.255 area 0
> >>>>>>> neighbor 141.1.123.3
> >>>>>>> neighbor 141.1.123.1
> >>>>>>> neighbor 141.1.123.1
> >>>>>>> neighbor 141.1.123.3
> >>>>>>> !
> >>>>>>>
> >>>>>>> Anyone else see this in 12.4(23) or other releases?
> >>>>>>>
> >>>>>>> Paul.
> >>>>>>>
> >>>>>>>
> >>>>>>> Blogs and organic groups at http://www.ccie.net
> >>>>>>>
> >>>>>>>
> _______________________________________________________________________
> >>>>>>>
> >>>>>>> Subscription information may be found at:
> >>>>>>> http://www.groupstudy.com/list/CCIELab.html
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>> Blogs and organic groups at http://www.ccie.net
> >>>>>>
> >>>>>>
> _______________________________________________________________________
> >>>>>>
> >>>>>> Subscription information may be found at:
> >>>>>> http://www.groupstudy.com/list/CCIELab.html
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> >
> >
> >
> >
> >
>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>

-- 
Pavel Bykov
----------------
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Received on Tue Apr 21 2009 - 16:42:40 ART

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