Subject: Re: [PWE3] pwe3 Digest, Vol 95, Issue 11

From: Lizhong Jin <[email-masked]>
Date: Fri, 16 Mar 2012 23:03:17 +0800

>
>
> 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
>
>
>
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