A quick Google of 'routing gigabit Ethernet pcb' yielded many results. One of which is: www.ee.duke.edu/~mbrooke/EE164.02/ Click> Spring_2004. There seems to be a lot of material that will help you out. There are definitely many more places where you can find these kind of resources. Best of luck, Andrew Noonan Sr. PCB Designer Topspin Communications (w)650-316-3398 (c)650-814-3677 -----Original Message----- From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Kevin McCowan Sent: Thursday, May 12, 2005 12:53 PM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: Gigabit Ethernet circuit design I have done these before and I think standard practices for the type of nets (diff pairs) should take care of it. If you need more help check with the manufacturers of the chips and see if they recommend something. They are only 4 250 meg pairs. I have just made sure the nets aren't too long and keep other stuff a little away. I have done 3 or 4 of these and had no issues. Kevin McCowan Sr. PCB Designer TSI Telsys moose wrote: > Hi, > I need to read some information about how to layout > a pcb for Cigabit Ethernet Circuit Design. > and Layer 4 and Layer 7 forwarding machines. > is there any book that I can find some tips about these. > thanks ----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx with a subject of subscribe or unsubscribe To view the archives of this list please login at //www.freelists.org. Our list name is icu-pcb-forum or go to //www.freelists.org/archives/icu-pcb-forum/ Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx Want to post a job listing ? DON'T DO IT HERE! Better yet, join our jobs listing forum. SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx POST: icu-jobs-forum@xxxxxxxxxx ----------------------------------------------------------- ----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx with a subject of subscribe or unsubscribe To view the archives of this list please login at //www.freelists.org. Our list name is icu-pcb-forum or go to //www.freelists.org/archives/icu-pcb-forum/ Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx Want to post a job listing ? DON'T DO IT HERE! Better yet, join our jobs listing forum. SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx POST: icu-jobs-forum@xxxxxxxxxx -----------------------------------------------------------