From: Mohamed Tandou (dtandou@gmail.com)
Date: Sun Mar 01 2009 - 12:36:38 ARST
Thanks everyone for your input. i wanted to make sure . The scenario in the
lab book said no Weight, no Local Pref, no Med and no AS-PATH and they used
Origin to influence outgoing traffic like Weight and Local Pref i wanted to
test if incoming traffic can also be influenced like MED or AS-PAT and it
works fine.
Moh
On Sun, Mar 1, 2009 at 8:58 AM, Nadeem Ansari <nadeem.ansari574@gmail.com>wrote:
> Dear Mohammed,
>
> yes origin can be use to influence incoming traffic bcoz origin will be use
> as path selection
>
> Regards
> Nadeem
>
>
> On 3/1/09, Huan Pham <pnhuan@yahoo.com> wrote:
>>
>> Hi Mohamed,
>>
>> Then you know the answer in Joe's post - obviously you can!
>>
>> In
>> addition to Joe's post, Pls be aware that MED can only influence incomming
>> policy on directly connected AS. On the other hand, AS & Origin can be
>> used to
>> influence routing policy even on remote indirectly connected upstream AS.
>> Some
>> real life scenarios prevent you from twicking AS path (e.g. which may
>> cause
>> other undesirable side effect changes) leaving you with only one option of
>> using Origin. I came across this scenario once, in a MPLS VPN service
>> provider
>> network.
>>
>> Leave all options open, then you can always chose best one,
>> depending on your given scenario.
>>
>>
>>
>>
>> One-finger typed from my phone
>>
>> On
>> 01/03/2009, at 10:17 PM, Mohamed Tandou <dtandou@gmail.com> wrote:
>>
>> Hi Joe and
>> Huan,
>> i wanted to know if Origin can be used to influence incoming traffic
>> like MED and AS-PATH.
>>
>> Thanks
>>
>> Moh
>>
>> On Sun, Mar 1, 2009 at 4:35 AM, Huan
>> Pham <pnhuan@yahoo.com> wrote:
>>
>> Hi Joe,
>>
>> You seem to have missed his question.
>> He wants to know if Origin can be used to influence policy for outgoing
>> traffic. I have not tested it but i think althought not common, Origin
>> could
>> be used, similar to Weight or Local Pref. It's a simple verification, but
>> i am
>> not have access to lab right now.
>>
>>
>>
>> One-finger typed from my phone
>>
>> On
>> 01/03/2009, at 3:27 PM, "Joseph L. Brunner" <joe@affirmedsystems.com>
>> wrote:
>> As long as the "incomplete" is set upstream, either by route-map or simply
>> redistribute static into BGP, the receiving AS will use the incomplete to
>> make
>> its outgoing decision if other I or E attributes are found on other
>> competing
>> BGP paths...
>>
>> Is this standard? No, as we have MED for this reason, but its
>> one way to do it... others are of course MED, AS path length prepends,
>> etc.
>> -Joe
>>
>> -----Original Message-----
>> From: nobody@groupstudy.com
>> [mailto:nobody@groupstudy.com] On Behalf Of Mohamed Tandou
>> Sent: Saturday,
>> February 28, 2009 8:19 PM
>> To: ccielab@groupstudy.com
>> Subject: Origin
>> Incomplete
>>
>> GS,
>> i tested Origin Incomplete by using route-map to influence
>> incoming traffic
>> and it works but in one CCIE practice lab book they used it
>> to influence
>> outgoing traffic. Any comment?
>>
>> Thanks
>>
>> Moh
>>
>>
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