Re: OSPF Virtual Links

Everything I have tried does not work on R3.
I tried everyones suggestion and no summarization worked.
It appears that the area range command can only be used at the ABR of the
area that originates the route.
Of course it works on R1 without an issue.
So then how is it possible to summarize a group of routes in OSPF at an ABR
other than the originating ABR?

On Tue, Jun 22, 2010 at 6:28 PM, Narbik Kocharians <narbikk_at_gmail.com>wrote:

> To add to what Adrian and Bob mentioned, remember that the "area range"
> command specifies the area that the specific routes are generated.
>
>
> On Tue, Jun 22, 2010 at 4:05 PM, Bob Sinclair <bob_at_bobsinclair.net> wrote:
>
>> Quick thought: If they are area 5 routes, then shouldn't the summary
>> command be "area 5 range..." I believe the command references the source
>> area.
>>
>> HTH,
>>
>> -Bob Sinclair
>>
>> > -----Original Message-----
>> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>> > cgrammer_at_essilorusa.com
>> > Sent: Tuesday, June 22, 2010 6:52 PM
>> > To: ccielab_at_groupstudy.com
>> > Subject: OSPF Virtual Links
>> >
>> > I am having a difficult time finding information regarding a detailed
>> > explanation of OSPF virtual links with regards to route summarization
>> > on the
>> > remote end of the virtual link router.
>> >
>> > I am working on a practice lab that:
>> >
>> > (area5) R1 --(area0)--- R2 ----(area1) ---R3 ---(area3) --- R4
>> >
>> > The requirement is to connect R2 to R3 with a virtual link to allow
>> > area5
>> > routes to be propagated to R4.
>> > 1.1.0.0/24
>> > 1.1.1.0/24
>> > 1.1.2.0/24
>> > 1.1.3.0/24
>> >
>> > The routes show up on R4 as expected, but the next requirement is to
>> > summarize
>> > the routes at R3 so that it shows up as 1.1.0.0/22 on R4.
>> >
>> > Since R3 is now a member of Area0, I would think i can use
>> > area 0 range 1.1.0.0 255.255.252.0
>> >
>> > But,this doesn't work.
>> > It seems that there are some peculiar characteristics regarding virtual
>> > links
>> > and area 0, but there isn't much documentation outside of the
>> > rudimentary
>> > explanation and troubleshooting commands.
>> >
>> > Thanks in advance for everyones help,
>> >
>> >
>> > Chris
>> >
>> >
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>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining.com
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Received on Tue Jun 22 2010 - 18:39:14 ART