Re: EIGRP SoO

in order to see the effect, you first should configure it without SoO and try to simulate the routing loop (although temporary) but dropping interfaces on CEs, and then watch the VRF routing tables on PEs. Depending on the topology, you might not actually experience any loops. But if you do, you should see that route flip flop between BGP and EIGRP on the PE in the other site. Then you can configure SoO to prevent this from happening. Also, I think that early IOS versions where EIGRP SoO was implemented didn't show you SoO in the EIGRP topology. I don't remember seeing it when I was testing it. I just did another test on a newer IOS during my SP bootcamp, and it looks like eigrp topology now shows EIGRP's SoO.

Roman Rodichev
6xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider, Wireless)
Instructor, Content Developer, CEO
ieMentor Corporation
http://www.iementor.com
Y!M: roman7927

On Aug 4, 2010, at 4:14 AM, Maarten Vervoorn wrote:

> Is the config on the backdoor links(without BGP and VRF) the same as with
> the VPN link
> Int fa0/0
> ip vrf sitemap SOO
> !
> route-map SOO
> set extcomm 100:1
> !
> Is the an other way to check if its working?
>
> Kind regards,
>
> Maarten Vervoorn
>
> 2010/8/4 Roman Rodichev <romangs_at_iementor.com>
>
>> EIGRP routes also carry SoO, you just can't see them in the topology,
>> unfortunately.
>> No, don't use SoO unless your task wording requires it.
>>
>> Roman Rodichev
>> 6xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider, Wireless)
>> Instructor, Content Developer, CEO
>> ieMentor Corporation
>> http://www.iementor.com
>> Y!M: roman7927
>>
>> On Aug 3, 2010, at 2:42 AM, Maarten Vervoorn wrote:
>>
>>> Hi group,
>>>
>>> I was studing on EIGRP SoO and came up with a couple of questions. I read
>>> the document from Petr Lapukhov (great document).
>>> In the last option he explains that you van set the SoO on the VPN link
>> and
>>> backdoor link.
>>>
>>> How do you set the SoO on the backdoor link? no bgp or vrf's are running
>>> here
>>>
>>> In the real lab is it wise to always use SoO to provide stablility in the
>>> network even if you aren't asked to do so?
>>>
>>> Kind regards,
>>>
>>> Maarten
>>>
>>>
>>> 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
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Wed Aug 04 2010 - 09:54:10 ART