[j-nsp] interface used on mini-PIM modules on Juniper SRX platform

[Edward Dore]

The original PIMs on the J-series were PCI and the subsequent ePIM and uPIM were PCI-E.

I believe the XPIM on the SRX series are also PCI-E.

I’m not sure about the mini-PIM, but I would guess at PCI as the Cavium OCTEON processor used in the SRX210 is a CN5020 and the only real option it has for expansion is 32-bit 66MHz PCI. That would give you just over 2Gbps of bandwidth on the PCI bus shared between the single mini-PIM slot and anything else Junpier have hooked up to the PCI bus, with the biggest mini-PIM that you can get being 1x1Gbps.

Edward Dore 
Freethought Internet 

On 5 May 2014, at 23:28, Martin T <m4rtntns at gmail.com> wrote:

> Hi,
> 
> has anyone investigated what interface is used in case of mini-PIM
> modules? Physically it looks similar to 68-pin SCSI-3 connector:
> http://i.imgur.com/UxhCS6g.jpg Do they use some proprietary protocol
> or is it indeed SCSI? It would probably appear in kernel message
> buffer(seen with dmesg/"show system boot-messages") when SRX is booted
> up with mini-PIM inserted, but unfortunately I don't have any modules
> around.
> 
> 
> 
> regards,
> Martin
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