From: Jo Knight (joknight@gmail.com)
Date: Sat Oct 13 2007 - 19:06:35 ART
Gary,
I too was watching the rugby, so all good there.
I get the logic now, I dont know why I didnt see it working like that
earlier. I have a rack session booked for tomorrow, So I am going to
re-check my configs.
Thanks for the pointers.
Jo
Gary Duncanson wrote:
> Hi Jo,
>
> Obviously this is hard without the workbook but I have drawn the
> topology out using the instructions you emailed me offline.
>
> I think this is the topology
>
>
> OSPF Area 0 ---R1
> -EIGRP- R6- RIP------BB1 +BB2
> OSPF Area 0 ---- --R2
>
> You asked what the metric settings are supposed to be doing on R1 and
> R2. Well as I read it, they will provide a means for OSPF Area 0
> routers to elect to use R1 or R2 to get to certain routes. You say
> that they are set to the same thing and ask..what does that achieve?
> But from the looks of things the metrics are not the same thing...
>
> R6 redistributes routes from RIP into EIGRP with different tags for
> routes from BB1 (tag = 1) and routes from BB2 (tag =3).
>
> Now once you look at redistributing EIGRP into OSPF on R1 and R2 look
> at the route map EIGRP2OSPF. You can see on R1 this sets the metric to
> 1 for routes with a tag of 1. All other EIGRP routes redistributed
> into OSPF I think will have a metric of 20. So expect OSPF routers to
> prefer R1 to get to BB1's 212.18.0.0/22.
>
> In the case of R2 the route map EIGRP2OSPF should set the metric to 1
> for routes with a tag of 3. So expect routers to prefer R2 to get to
> BB3's 31.0.0.0/14 and 30.0.0.0/14
>
> So as far as Area 0 routers are concerned, the best metric to get to
> BB1 subnets is via R1 and the best metric to get to BB3 subnets is via R2
>
> That's how I read things. If that's correct and the behavior of your
> lab isn't the same then perhaps you have other problems?
>
> Sorry for the late response and any inaccuracies but England have just
> squeeked past France in the Rugby World Cup in Paris and I am a bottle
> of Merlot to the good :)
>
> My comisserations to France BTW.
>
> HTH
> Gary
>
>
>
>
>
>
> ----- Original Message ----- From: "Jo Knight" <joknight@gmail.com>
> To: "Cisco certification" <ccielab@groupstudy.com>
> Sent: Saturday, October 13, 2007 6:24 PM
> Subject: IEWB v4 Lab 3 Task 4.9
>
>
>> GS,
>>
>> I have been working through the redistribution task in this lab, but
>> am having no luck with the provided solution guide config.
>>
>> The idea is that prefixes from BB1 and BB3 have been tagged
>> accordingly when distributed from RIP into EIGRP on R6.
>>
>> R6
>>
>> ip prefix-list RIP_FROM_BB1 seq 5 permit 212.18.0.0/22 ge 24 le 24
>> !
>> ip prefix-list RIP_FROM_BB3 seq 5 permit 31.0.0.0/14 ge 16 le 16
>> ip prefix-list RIP_FROM_BB3 seq 10 permit 30.0.0.0/14 ge 16 le 16
>> !
>> !
>> !
>> route-map RIP2EIGRP permit 10
>> match ip address prefix-list RIP_FROM_BB1
>> set tag 1
>> !
>> route-map RIP2EIGRP permit 20
>> match ip address prefix-list RIP_FROM_BB3
>> set tag 3
>> !
>> route-map RIP2EIGRP permit 30
>>
>> I am happy that the tagging is identifying routes as if I
>> redistribute between EIGRP and OSPF on R1 I see the tags on R5 for
>> example
>>
>> My issue is when I follow the solutions guide and apply the following
>> config on R1 and R2, what should the following config acheive?
>>
>> R1
>>
>> route-map EIGRP2OSPF permit 10
>> match tag 1
>> set metric 1
>> !
>> route-map EIGRP2OSPF permit 1000
>> !
>>
>> router ospf 1
>> redistribute eigrp 100 subnets route-map EIGRP2OSPF
>>
>>
>> R2
>>
>> route-map EIGRP2OSPF permit 10
>> match tag 3
>> set metric 1
>> !
>> route-map EIGRP2OSPF permit 1000
>> !
>>
>> router ospf 1
>> redistribute eigrp 100 subnets route-map EIGRP2OSPF
>>
>> When I apply this I see the routes from BB1 and BB3 but they all flow
>> through R1. Can someone explain what the metric settings are supposed
>> to be doing on R1 and R2? If they are set to the same thing then what
>> does this achieve?
>>
>> Thanks,
>> Jo
>>
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