Re: OSPF Path selection question

Yes, it's expected if I understand your topology correctly. See rule
#3. You can get creative and change the behavior. Change the link
between R5 and R4 to area 1 or add a link between R5 and R2. That
type of thing...

On Sat, Mar 20, 2010 at 7:00 PM, mohamed kamar
<mohamed_kamar_at_hotmail.com> wrote:
>
>
> Thanks Ronnie;
> The case here that it's taking area 1 path anyway regardless the cost, is
> it expected?, If yes, how to overcome this ? Thanks
>
>> Date: Sat, 20 Mar 2010 18:53:11 -0400
>> Subject: Re: OSPF Path selection question
>> From: ronnie.angello_at_gmail.com
>> To: mohamed_kamar_at_hotmail.com
>> CC: ccielab_at_groupstudy.com
>>
>> Metrics aside, consider OSPF path selection rules -
>>
>> 1) Take shortest path to area 0
>> 2) Take shortest path through area 0 without going through a non-zero area
>> 3) Take shortest path to destination without going through area 0
>>
>> Thanks,
>> Ronnie
>>
>> On Sat, Mar 20, 2010 at 6:25 PM, mohamed kamar
>> <mohamed_kamar_at_hotmail.com> wrote:
>> > Hi Friends;
>> >
>> > Any one has idea what's going on in the below?
>> >
>> >
>> > R1
>> >
>> > | (BGP)
>> >
>> > |------------------------|
>> >
>> > R3---------------------R2
>> >
>> > | OSPF Area1 |
>> >
>> > R5-------------------- R4
>> >
>> > OSPF Area 0
>> >
>> >
>> >
>> >
>> > -R1 is running BGP with R2 and R3
>> >
>> > -R2 is primary router So it's redistribute BGP into OSPF metric 100 type
>> > E1
>> >
>> > -R3 is Secondry router So it's redistribute BGP into OSPF metric 200
>> > type E1
>> >
>> >
>> > The problem is R5 always using R3 path to reach R1 however the metric of
>> > this
>> > path is higher than the one coming from R4, Any Idea, Thanks
>> >
>> >
>> > Best Regards;
>> >
>> > M.Kamar
>> >
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>>
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>> Ronald Angello
>> Network Architect
>> CCIE 17846
>> CCDP, CCIP, CCNP
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