Routing

Hi All,

I would like to know how many DC power cables do we need in a full capacity.

Looking forward your feedback.

BR/

Zakour

Hi,

Look at "show chassis power" to see the power output of the power supplies.  You'll see a line with "Capacity" on it.  That tells you how much power it is capable of supplying

Other resources:

http://www.juniper.net/documentation/en_US/release-independent/junos/topics/reference/specifications/calculating-dc-power-requirements-for-mx2020-routers.html

http://juniper.tw/techpubs/en_US/release-independent/junos/topics/concept/mx2020-dc-power-distribution-module.html

http://www.juniper.net/documentation/en_US/release-independent/junos/topics/task/verification/maintain-mx2020-power-usage.html

Hi ,

Many thanks for links shared, I already read all of them but unfortunatly none of them contain the information requested.

The question here is: How many DC Power cables do we need for a full capacity in term of Power.

thank you for your understand.

BR/

Zakour

Hi,

Sorry for the confusion .

No matter what the answer might be , you well get educated respond , not final respond .
You'll always be refer in such risky question to a documentation.
And in case no documentation found , you might want to check that with JTAC , they may handle those information for you .

Here is another PDF document mx2020-quick-start that might be useful for you .

Regardless of all that has been said, I would let an expert to share his knowledge .

You need to connect 72 power feed cables to the MX2020 which is equal to 36 Power feeds ( one cable for -48V and one cable for 0V)

We have 9 PSM per upper or lover chassis. = 18 PSM’s per MX2020

Each chassis has 2 PDM’s  = 4 PDM’s per MX2020

Each of the DC PDM’s has 9 DC Power input connectors  =  18 per chassis  = 36 per MX2020

Per chassis, the upper PDM has 9 feeds, one for each PSM and the lower PDM has 9 feeds, one for each PSM for redundancy.

This also applies to the bottom chassis.

So again we need 36 DC power feeds  which is equal to 72 cables.