Hi Bruno,

On 6/14/14 9:57 AM, "[email protected]"
<[email protected]> wrote:

>Hi Keyur,
>
>> From: Keyur Patel (keyupate) [mailto:[email protected]] > Sent:
>>Saturday, June 14, 2014 9:07 AM
>> 
>> Hi Bruno,
>> 
>> 
>> On 6/13/14 2:02 AM, "[email protected]"
>> <[email protected]> wrote:
>> 
>> >> > Validity state signaling SHOULD NOT be accepted from a neighbor AS.
>> >>
>> >> I would agree
>> >
>> >I agree on the goal.
>> >Now the question is how do you protect from this, if you're unstrusted
>> >neighbor AS send this community over eBGP session.
>> 
>> 
>> I suggest we log an error and drop the community.
>
>Looks good. Could you please add this in the draft?

Sure.

Regards,
Keyur
>
>Thanks.
>Bruno
>
>> 
>> Regards,
>> Keyur
>> 
>> >
>> >> + also add that setting this extended community by manual
>> >> EBGP policy should NOT be supported.
>> >
>> >IMO adding the text "The sender should not do that" is not a very
>> >strong protection. Otherwise, we would not need any crypto signature.
>> >(e.g. you should not originate a BGP route if you are not the true
>> originator).
>> >You can add the check on the receiver side, but this would now require
>> >that all ASBR be upgraded to support this new community, before it
>> >could be used. If this is the chosen path, it should be written in the
>> >draft in the deployment consideration section
>> >
>> >> The above along with the fact that this is already non-transitive in
>> >>the AS  scope should solve that worry completely.
>> >
>> >Not yet.
>> >
>> >> r.
>> >>
>> >> On Fri, Jun 13, 2014 at 4:12 AM, Randy Bush <[email protected]> wrote:
>> >> >> #Keyur: Ideally, the usage of this community should NOT be
>> >> >> encouraged #across inter-as boundaries.  We can add necessary text
>> >> >> to reflect #that part.
>> >> >
>> >> > from rfc 7115, end of sec 5
>> >> >
>> >> >    Validity state signaling SHOULD NOT be accepted from a neighbor
>>AS.
>> >> >    The validity state of a received announcement has only local
>>scope
>> >> >    due to issues such as scope of trust, RPKI synchrony, and
>> >>management
>> >> >    of local trust anchors [LTA-USE].
>> >> >
>> >> > randy
>> >> >
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>__________________________________________________________________________
>_______________________________________________
>
>Ce message et ses pieces jointes peuvent contenir des informations
>confidentielles ou privilegiees et ne doivent donc
>pas etre diffuses, exploites ou copies sans autorisation. Si vous avez
>recu ce message par erreur, veuillez le signaler
>a l'expediteur et le detruire ainsi que les pieces jointes. Les messages
>electroniques etant susceptibles d'alteration,
>Orange decline toute responsabilite si ce message a ete altere, deforme
>ou falsifie. Merci.
>
>This message and its attachments may contain confidential or privileged
>information that may be protected by law;
>they should not be distributed, used or copied without authorisation.
>If you have received this email in error, please notify the sender and
>delete this message and its attachments.
>As emails may be altered, Orange is not liable for messages that have
>been modified, changed or falsified.
>Thank you.
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