Cabling Question

I couldn't find a Juniper SG8.  And you didn't say which Cisco switch.  So it's hard to say.  

That said, most current Cisco switches support Auto-MDIX which means it will automatically adapt to whatever the other device is no matter what cable you use.

That depends on the exact models involved.  Generally speaking, they stopped making fixed polarity switches quite a while ago, although some are still in use.  With most switches these days supporting auto MDI/MIDX, it doesn't matter any more - usually.

I will get the exact model number on the switch from my customer. This was a question from them.
I will post an update tomorrow.

The answer to the exact question is "maybe".  They asked about the cable and not the boxes, right?

"It may be a crossover cable and it may not be a crossover cable and it likely doesn't matter".

If it's already there and it's working then, again, it may not matter which wiring configuration that it has.

Consider this:

- if it's a straight-through cable then you won't be needing a crossover cable between those ports in the future unless you change one of the boxes and put in a really old box as a replacement.
- if it's a crossover cable then you may need a crossover cable between those ports in the future unless you change one of the boxes for a newer one.
- if it's a crossover cable then you may NOT actually need a crossover cable between those ports now or in the future.

There's a rather high probability that it's a straight-through cable.  It's easy to tell.  If it is then you're likely done.

If it's a crossover cable then you will probably want to know about the devices port capabilities - to determine if it can be replace with a straight-through cable immediately.  If it can be then that's what I'd do.

Thank you fmarshall I will check on the switch number tomorrow and see what it is.

Great advice, thank you.