Re: [PWE3] S-PE bypass mode in draft-ietf-pwe3-static-pw-status-04

[Luca Martini <[e-mail]>]

On 06/13/2011 08:41 PM, [e-mail] wrote:
> Luca,
> Thank you for the clarification. I got some misunderstanding. Then the 
> feature in section 5.5.1 is only for the first or last PW segment, hope to 
> make it more clear, like: "When the first/last PW Segment along an MS-PW 
> is using..."
Yes, i'll add a clarification.
> In section 2: "Where an LDP control plane exists, this MUST be used for 
> signaling all PW status messages with the exception of those specified in 
> [REDUNDANCY]."
> The description is not accurate, for the exception will also include local 
> AC fault.
>
I cannot find this text in section 2.

however in section 4 , I see that we need to update the text there.

Thanks!
Luca

> Regards
> Lizhong
>  
>
> Luca Martini <[e-mail]> wrote on 2011-06-14 02:14:57:
>
>> On 06/13/2011 06:38 AM, [e-mail] wrote:
>>> Dear authors,
>>> I have a concern for the S-PE bypass mode. If one PW segment using LDP 
>>> control plane is in graceful restart state, then how to send the PW 
> status 
>>> codes defined in section 5.5 for S-PE? These PW status may be 
> discarded, 
>>> because the control plane may be down or in recovering state
>> I do not believe that graceful restart is supported , not should it be
>> supported for PW.
>> The problem is very different for PWs that it is for IP label bindings.
>> Graceful restart as it is today can actually cause service interruptions
>> to PWs, and cause problems.
>>
>> S-PE bypass mode is end to end only, so S-PE do not see/process  the
>> inband ACH OAM messages.
>> Luca
>>
>>
>>> Hope to see the clarification, thank you.
>>>
>>> Regards
>>> Lizhong
>>>
>>>
>>>
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