From: Nitin Venugopal (nitinsworld@gmail.com)
Date: Sun Mar 15 2009 - 15:22:55 ART
Your Solution is fine. However as i told you, the question is you are not
allowed to configure more than one isis process
How will you bind an area with the Interface?
Binding of ISIS process to specific interface is not allowed in the question
Best Regards
Nitin
On Sun, Mar 15, 2009 at 8:44 PM, Peter Svidler <doubleccie@yahoo.com> wrote:
> when you apply ISIS process with multiple NET command configured on
> certain interface , all the Areas under this process will be assigned to
> this interface ..in other words the router will be able to form adj with
> neighbors if any of the areas are configured on the neighbor ( assuming L1
> here since with Level2 the area matching is not a restriction )
>
> assume you have 3 routers R1 ----R2 ----R3 and assume all L1
>
>
> R1 is area 1 , and R3 on area 3 , now on R2 you can configure two NET
> command for A1 and A3 , apply the process on R2 both interfaces .
>
> you will be able in this case to form adj. wth both R1 and R3 , the
> prefixes will be also leaked between the two areas .
>
>
>
>
> --- On *Sun, 3/15/09, Nitin Venugopal <nitinsworld@gmail.com>* wrote:
>
> From: Nitin Venugopal <nitinsworld@gmail.com>
> Subject: Re: ISIS multi-area
> To: doubleccie@yahoo.com
> Cc: "Fahad Khan" <fahad.khan@gmail.com>, ccielab@groupstudy.com
> Date: Sunday, March 15, 2009, 8:40 AM
>
>
> 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:
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>>
>>
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>>
>> _______________________________________________________________________
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