Subject: Re: [PWE3] draft-ietf-pwe3-iccp interaction with draft-pw-redundancy-bit

From: Lizhong Jin <[email-masked]>
Date: Fri, 16 Mar 2012 23:05:12 +0800

Sorry, send again with correct mail subject.

Lizhong

2012/3/16 Lizhong Jin <[email-masked]>

>
>> The ICCP draft does assume the use of the pw-redundancy-bit draft. Section
>> 9.1.3 describes two modes of operation (depending on configuration):
>>
>> - When an external AC redundancy mechanism is in use, and is being
>> synchronized among the PEs via ICCP. In this mode, PW state is not
>> synchronized via ICCP and the Independent Mode of operation is used for PW
>> state signaling. This guarantees that the AC and PW states are always in
>> sync for a given PE (to avoid deadlock).
>>
>> - When an external AC redundancy mechanism is not in use, then PW state is
>> synchronized via ICCP. In this mode, either the Independent mode or the
>> Master/Slave mode could be used for PW state signaling.
>>
> [Lizhong] and if independent mode is applied, the the operator MUST be
> care to  configure same high/low PW priority at two end-points of
> active/standby PW, otherwise, will result two standby PW. More details
> are in draft-liu-l2vpn-vpls-inter-domain-redundancy-02 section 5.
>
> Regards
> Lizhong
>
>
>
> We will add clarifications to that effect in a future revision.
>
> Regards,
> Samer
>
>
> On 12-03-15 4:38 AM, "Daniel Cohn" <[email-masked]> wrote:
>
> > Hi draft-ietf-pwe3-iccp authors and list at large,
> >
> > Is there a reason why the ICCP draft does not explicit reference the pw
> > redundancy draft? It does mention active/standby signaling for the PWs,
> so
> > implicitly it seems to assume that the other endpoint is implementing
> > draft-pw-redundancy-bit, but in that case some details are missing such
> as
> > which pw redundancy mode should be used (e.g. master/slave), how PW
> precedence
> > should be configured, etc.
> >
> > Is this something you plan to add in future revisions?
> >
> > Thanks,
> >
> > Daniel
> >
> >
> >
> > _______________________________________________
> > pwe3 mailing list
> > [email-masked]
> > https://www.ietf.org/mailman/listinfo/pwe3
>
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