Re: [PWE3] PWE3 WG adoption of draft-zhang-mpls-tp-pw-oam-config-06

Hi Tom

According to my understanding, I think you are concerning about two points

(1) Synchronization between different configuration points，as you said  "
Both accessors in the example I gave have permission to change the 
configuration (authenticated). The issue is again, that you can overwrite 
the other one's configuration without their knowing."

Just my two cents, This would not happen for MS-PW because that the 
setting up and OAM configuration of PWs are intialized by only one T-PE 
node, the other nodes just receive the control plane signaling and react 
to the events. As to SS-PW, this is a issue, but the different 
configuration parameters can be negotiated by the subsequent signaling 
messages, as described in the section 6.2

(2)The security of the mechanisms, as you said "Consider the case of a 
cable MSO with different operational domains, where one operator isn't 
authorized to make configuration changes in the other domain"

I think every accessors have been authorized, otherwise the control plane 
signaling will not be sent. Furthermore, there is one WG draft in MPLS 
about the security, see
http://tools.ietf.org/html/draft-ietf-mpls-tp-security-framework-01, and 
attacks on the control plane is discussed on the secion 4.1. 

Best regards

Fei

Thomas Nadeau <tnadeau@lucidvision.com> 
发件人:  pwe3-bounces@ietf.org
2011-09-07 00:17

收件人
"Andrew G. Malis" <agmalis@gmail.com>
抄送
pwe3@ietf.org
主题
Re: [PWE3] PWE3 WG adoption of draft-zhang-mpls-tp-pw-oam-config-06

                 As I mentioned during the meeting, I think this it is a 
bad idea to allow configuration via the OAM control channel, so I do not 
want this adopted as a WG draft.

                 --Tom

On Sep 6, 2011, at 10:58 AM, Andrew G. Malis wrote:

> This email begins a two-week poll on the PWE3 working group adoption
> of draft-zhang-mpls-tp-pw-oam-config-06, to end on Sept. 20.
> 
> You can read the draft at
> https://tools.ietf.org/html/draft-zhang-mpls-tp-pw-oam-config-06 .
> 
> The MPLS working group was bcc:ed for their information.
> 
> Please respond with any comments to pwe3@ietf.org ONLY.
> 
> Thanks,
> Andy
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> pwe3 mailing list
> pwe3@ietf.org
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> 

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