Re: [Idr] draft-walton-bgp-add-paths-06.txt as IDR WG document

Hi Enke, Manav,

I agree to Manav that Addpath is sufficient to advertise and withdraw
multiple paths.

Enke Chen schrieb:
> Hi, Mnav:
>
> As described in the add-path document (sect. 7), the specific
> applications are to be addressed by the application documents.  For
> example, currently there are two such documents:
>
>   1) BGP Persistent Route Oscillation Solution,
> draft-walton-bgp-route-oscillation-stop-01.txt  (out-dated, needs update)
>
>  2)Fast Connectivity Restoration Using BGP Add-path,
> draft-pmohapat-idr-fast-conn-restore-00
>
> The issue of "active path" vs "inavtive path" is more relevant to #2,
> and it is indeed addressed there.
The idea sketched in the Fast Connectivity Restoration draft is a step
in the right direction. However, there are still configurations possible
where inactive paths are incorrectly rated as active ones. Such examples
show that the Border router attr_set as currently design is not
sufficient to solve the active/inactive rating problem in general. As
Manav, I believe that Addpath in hardly usable without having a
mechanism that inherently avoids this problem. I hope I will find some
time to email an ASCII example for such a configuration.

Regards

Uli
>
> Thanks.   -- Enke
>
> Bhatia, Manav (Manav) wrote:
>> Hi,
>>
>> I've read enough to believe that the proposed mechanism is sufficient to
>> advertise and withdraw multiple paths.  I am ok with this part.
>> However, one key thing that isn't obvious from this draft is how the
>> active path(s) (the ones(s) actually inserted in the FIB and being used
>> for forwarding traffic) of the advertising speaker is differentiated
>> from other non-active paths.
>>
>> Cheers, Manav
>>  
>>> -----Original Message-----
>>> From: idr-bounces@ietf.org [mailto:idr-bounces@ietf.org] On Behalf
>>> Of Yakov Rekhter
>>> Sent: Tuesday, November 25, 2008 1.21 AM
>>> To: idr@ietf.org
>>> Subject: [Idr] draft-walton-bgp-add-paths-06.txt as IDR WG document
>>>
>>> Folks,
>>>
>>> Please send your comments on the attached. The deadline for comments
>>> is Dec 12, 2008.
>>>
>>> Yakov.
>>> ------- Forwarded Message
>>>
>>> Date:    Mon, 24 Nov 2008 14:44:00 -0500
>>> From:    "John G. Scudder" <jgs@juniper.net>
>>> To:      Yakov Rekhter <yakov@juniper.net>, skh@ghs.com
>>> cc:      Inter-Domain Routing List <idr@ietf.org>
>>> Subject: draft-walton-bgp-add-paths-06.txt as IDR WG document
>>>
>>> The authors would like to request that draft-walton-bgp-add-
>>> paths-06.txt be adopted as an IDR WG document.
>>>
>>> Thanks,
>>>
>>> - --John
>>>
>>> ------- End of Forwarded Message
>>>
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-- 
______________________________________________________________
ULI BORNHAUSER                University of Bonn
                              Institute of Computer Science IV
Web:   www.cs.bonn.edu/IV/ub  Roemerstr. 164
Email: ub@cs.uni-bonn.de      D - 53117 Bonn
Phone: +49 (228) 73 - 4550    Germany
Fax:   +49 (228) 73 - 4571

Re: [Idr] draft-walton-bgp-add-paths-06.txt as IDR WG document

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