From: Nitin Venugopal (nitinsworld@gmail.com)
Date: Sun Mar 15 2009 - 09:40:44 ART
Even if you apply multiple net under single process, how will you know which
interface is part of which area- Unless you bind the area with the
Interface.
ISIS process can be binded with specific interface , but you are not
allowed to add more isis process
Regds
Nitin
On Sun, Mar 15, 2009 at 4:34 PM, Peter Svidler <doubleccie@yahoo.com> wrote:
> the trick in my question was that i was expecting the command to look
> like
> redistribute isis (tag) ip level-2 into level-1 distrbuite-list 100
>
>
> however the ( tag ) is not required , probably because you can run only one
> level 2 process on the router but not sure .
>
>
> to comment on your answer , L1 router can accept redistribution from level2
> (typically this redistibution will be on L1/2 router ) , the prefixes will
> appear as IA in the L1 router
>
> to run multi-area on single interface , you have to put multiple NET
> commands under the same process , this scenarios is used for migration
> purposes .
>
>
>
>
>
>
>
>
>
> --- On *Sun, 3/15/09, Nitin Venugopal <nitinsworld@gmail.com>* wrote:
>
> From: Nitin Venugopal <nitinsworld@gmail.com>
> Subject: Re: ISIS multi-area
> To: "Fahad Khan" <fahad.khan@gmail.com>
> Cc: "Peter Svidler" <doubleccie@yahoo.com>, ccielab@groupstudy.com
> Date: Sunday, March 15, 2009, 6:15 AM
>
>
> FYI-L1 is NSSA (eq OSPF) by default
> ie it allows redistribtion, if it was totally stubby it wont allow
> redistribution
> L1 only intraarea
> L2 can be Inter Area or Intra Area
> L1/L20 is like ABR in OSPF
>
> i have one question. How can you have multiple interface be part of
> different ISIS area's . But with single ISIS process.
>
> *Say R1 *
> Eth 0/0 to be part of 49.4004 and Eth 0/1 be part of 49.4008. But only one
> process allowed is on the router 'router isis 10'
> And how will you differentiate which interface is part of which area?
>
> Regds
> Nitin
>
>
>
> On Sun, Mar 15, 2009 at 2:03 PM, Fahad Khan <fahad.khan@gmail.com> wrote:
>
> > I am sure you are talking about route leaking, since areas having L1
> > routers
> > are totally stubby by default. So you need to have route leaking
> configured
> > to inject specific L2 routes.
> >
> > You do it by
> >
> > redistribute isis ip level-2 into level-1 distribute-list <list
> defining L2
> > specific routes>
> >
> > regards,
> >
> > On Sun, Mar 15, 2009 at 11:40 AM, Peter Svidler <doubleccie@yahoo.com
> > >wrote:
> >
> > > Guys ,
> > >
> > > is it possible on a router that is running multiple instances of
> ISIS to
> > > redistribute one into another ?
> > >
> > > assume i have router with one process L2 and another process L1 , i
> want
> > to
> > > redistribute the L2 process into the L1 process so that the
> downstream
> > sees
> > > the explicit route ...however when i try redistribution under the
> ISIS
> > L1
> > > process i get Unrecognized command !!!! is this even possible ( seems
> yes
> > )
> > > but what am i missing here? ( AREA1 is created already )
> > >
> > > router isis
> > >
> > > R1(config-router)#redistribute isis ?
> > > WORD ISO routing area tag
> > > ip Redistribution of IP routes between levels
> > > !(config-router)#redistribute isis AREA1 ?
> > > % Unrecognized command
> > >
> > >
> > >
> > >
> > > anyone sees something similar ?
> > >
> > >
> > >
> > >
> > >
> > > Blogs and organic groups at http://www.ccie.net
> > >
> > >
> _______________________________________________________________________
> > > Subscription information may be found at:
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> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> > --
> > Muhammad Fahad Khan
> > IT Specialist
> > Global Technology Services, IBM
> > +92-321-2370510
> > +92-301-8247638
> > http://www.linkedin.com/in/muhammadfahadkhan
> > http://fahad-internetworker.blogspot.com
> >
> >
> > 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
>
> _______________________________________________________________________
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