[j-nsp] MX960 PEMs and 3 phase power

Alain Hebert ahebert at pubnix.net
Wed Mar 22 12:24:29 EDT 2023


     Depending of your setup, all our COs are setup to provides A+B 
feed.  Which include TS, UPS and Bypass.

     PS: Be sure to test before putting it in production, the PEM #, and 
its assignment into the chassis, are not that straight forward.

-----
Alain Hebertahebert at pubnix.net    
PubNIX Inc.
50 boul. St-Charles
P.O. Box 26770     Beaconsfield, Quebec     H9W 6G7
Tel: 514-990-5911http://www.pubnix.net     Fax: 514-990-9443

On 3/22/23 11:27, Tom Storey via juniper-nsp wrote:
> Hi all.
>
> I had this idea in my head that MX960 power supplies should not be split
> across phases, but I cant find anything in any documentation that says that.
>
> Can anyone comment on whether multiple phases per PEM are supported, or
> whether its even a reasonable idea to put into practice?
>
> My thought is one PEM on one phase, such that if that phase drops, you drop
> that PEM entirely. Or is it worthwhile spreading across phases to keep even
> half of a PEM alive and supplying the chassis?
>
> Thanks
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