[j-nsp] M320

angel angel.bardarov at btc-net.bg
Tue Apr 15 04:01:29 EDT 2008


sthaug at nethelp.no wrote:
>> I think you read this a bit differently than I. I think the issue was
>> how few components are required to power up and boot an RE in an M320. 
>>     
>
> I think the person who asked the question in the first place needs to
> clarify it.
>
>   
>> I don't know the answer, but I bet no FPCs or PICs are required. At
>> least one power supply and one RE. Not sure about other things like how
>> many fan modules are needed or if a CFEB is required.
>>     
>
> We had an opportunity to check on some of this a few months ago, when
> we lost DC power in a node and later was able to restore partial power.
>
> We found that the M320, with one power supply, can power up an RE and
> *some* of the slots but not all. Also, you definitely need a CB to get
> anything powered up at all. Not sure about the SIBs.
>
> Steinar Haug, Nethelp consulting, sthaug at nethelp.no
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp
>
>   
It is possible to power M320 box with 1 PEM - it will feed RE, CB and 
FPC slots 0,1 and 2. You need second PEM to provide power for FPC slots 
3-7. You have to install power modules in slots PEM1 and PEM3.This 
scheme doesn't provide redundancy.
And please check juniper's documentation for more details:
http://www.juniper.net/techpubs/hardware/m320/m320-hwguide/hw-power-supply.html

Regards,
Angel Bardarov


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