ISA Server Troubleshooting; Layer 1

re: ISA Server Troubleshooting; Layer 1

Joe Blow — Sat, 14 Oct 2006 20:35:23 GMT

Not quite right.

Hard setting gig-e over copper will break things, badly.

See IEEE standard 802.3z Standard clause 37 for further details.

re: ISA Server Troubleshooting; Layer 1

isablog — Sun, 15 Oct 2006 17:10:16 GMT

Thanx, Joe.

You're correct that this may not work every time (device "compatablility", more often than not), but my (and quite a few others') experience has demonstrated otherwise.

I run two separate Gig-E copper lab networks and every device that is capable of it operates static G/full. In fact, the connection with the upstream router is also static G/full. All this runs with no problems at L1. Yes; where we have a 100 MbpS device operating, we "dumb down" the switch port, but I've never been forced to use "auto".

I will amend my posting to include "you need to test your configuration", since incompatabilities between devices are the greatest limiting factor.

re: ISA Server Troubleshooting; Layer 1

DFW Server Support — Sun, 06 May 2007 03:27:10 GMT

You mentioned above that "If a switch port is configured for 100 Mbps and the connected NIC is configured for 10 MbpS (or vice versa), they’ll won’t communicate at all, even though you may have a “connected” light and see “activity blinkies” on the port & adapter indicators."

I believe they will still connnected, however the speed will just be slowed down considerably. I know this from experience because I have had many routers and switches that have had ports go bad. When this happens the router generally will still send the data at 10mbps. So I am not sure if that is correct.

http://www.texanit.com

re: ISA Server Troubleshooting; Layer 1

FLV to MP3 Mac — Tue, 09 Jun 2009 05:06:18 GMT

Yes; where we have a 100 MbpS device operating