[j-nsp] Enhanced MX480 Midplane?

[Pavel Lunin]

Is there anyone who can give more details about the enhanced midplane?
>

It's just more lines (wires) to provide more fabric bandwidth per-slot/PFE.
And maybe more power as well, I am not sure though.

It's been shipping for ages (since 2012 or something like). It had been
supposed to be required even for SCBE and MPC3 non-NG but then Juniper
thought twice and finally it was not really necessarily until MPC5. See
Sebastian's comment for what it it gives in terms of bandwidth per slot.

So, in theory, all MX240/480/960 have been shipped with enhanced midplane
for many years, if only your partner/SE, or whoever makes the specs, does
his job well or you don't specifically ask for the non-enhanced version for
some reason (if it's still not EOL, I don't remember).

You can check whether you have it with the following command:

user at mx480> show chassis hardware | match Midplane
Midplane         REV 04   750-047862   XXXX1111          Enhanced MX480
Midplane

In the specs this is referred as MX480-BASE3 or -PREMIUM3 in contrast to
-BASE or -PREMIUM for non-enhanced midplane. You normally don't buy a
chassis on its own, so you don't see part codes like CHAS-BP3-MX480-S in
your BOMs.

AFAIR, you can also buy the new midplane as an FRU and change it yourself
though it requires to get all the cards out of the box.

--
Pavel