I have an interesting problem:
I noticed that my HTPC is connected at 100mbps instead of 1000mbps (Gbit), both NICs in the computer are Gbit capable but auto-negotiate at 100mbps. The Router is a NetGear N900 WNDR4500 and also Gbit capable. NIC and Router both have the most recent drivers/firmware. House is wired with Cat5e.
I forced one of the NICs in the PC to "1000mbps Full Duplex" instead of auto-negotiation and that worked... for a few hours.... then it disconnected and just showed as "cable disconnected" until I set the driver settings back to Auto Negotiation. (I haven't been able to successfully force 1000mbps since)
Troubleshooting I relocated the router and plugged it directly into the NIC, from there it Auto Negotiated to 1000mbps.
So that leads me to believe that the problem is with the Keystone, Wiring, or Punch Down Terminal.... Thoughts?
Also as a note, I do not have punchdown style keystones, instead I have these (I'm thinking they might be to blame?): http://www.monoprice.com/products/product.asp?c_id=105&cp_id=10519&cs_id=1051902&p_id=7302&seq=1&format=2
I've ordered some punchdown style keystones, but any thoughts or suggestions as I troubleshoot further?