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Re: APS support

Itzik Hendel wrote:

> All,
> I would like to understand if the 802.3ae WAN PHY can support APS (Automatic
> Protection Switching) between two F/O links.
> As I saw in the WIS section (Cls. 49), the K1/K2 values are set fixed to
> identify as Working Channel.

There is no provision for APS within 802.3. This was done to
reduce system costs since a redundant channel is no longer
required.  If there is a failure in the link, it is elevated to
higher level functions (instead of being at layer 1).

Tim Warland     P.Eng.
Hardware Design Engineer  Broadband Products
High Performance Optical Component Solutions
Nortel Networks                (613)765-6634