https://community.extremenetworks.com/t5/faqs/what-is-the-maximum-link-distance-for-1000base-t/m-p/44311#M245 Article ID: 4875 <BR /> <BR /> <B>Standards</B><BR /> 802.3ab<BR /> 1000Base-T <BR /> <BR /> <B>Related to</B><BR /> Ethernet<BR /> Gigabit<BR /> 10/100/1000 <BR /> <BR /> <B>Goals</B><BR /> Maximum link distance for 1000Base-T <BR /> <BR /> <B>Symptoms</B><BR /> No link<BR /> Gigabit link cannot be established <BR /> <BR /> <B>Solution</B><BR /> The maximum link distance for a full duplex 1000Base-T Gigabit Ethernet link utilizing four pairs of Category 5 UTP cabling is 100 meters. <BR /> <BR /> This distance is stated in the <A href="http://standards.ieee.org/announcements/802.3ab.html" target="_blank" rel="nofollow noreferrer noopener">802.3ab Ratification press release</A>. <BR /> <BR /> Unless all four pairs are utilized for 10/100/1000 port attachment, the peer ports may or may not be able to attain link; and if they attain link, they will likely not be able to reliably pass traffic. This is true of both straight-through and crossover pinouts, at any line speed. <BR /> <BR /> See also: <A href="http://bit.ly/I5gwKo" target="_blank" rel="nofollow noreferrer noopener">4593</A>. Thu, 21 Nov 2013 21:52:00 GMT FAQ_User 2013-11-21T21:52:00Z https://community.extremenetworks.com/t5/faqs/what-is-the-maximum-link-distance-for-1000base-t/m-p/44311#M245 Article ID: 4875 <BR /> <BR /> <B>Standards</B><BR /> 802.3ab<BR /> 1000Base-T <BR /> <BR /> <B>Related to</B><BR /> Ethernet<BR /> Gigabit<BR /> 10/100/1000 <BR /> <BR /> <B>Goals</B><BR /> Maximum link distance for 1000Base-T <BR /> <BR /> <B>Symptoms</B><BR /> No link<BR /> Gigabit link cannot be established <BR /> <BR /> <B>Solution</B><BR /> The maximum link distance for a full duplex 1000Base-T Gigabit Ethernet link utilizing four pairs of Category 5 UTP cabling is 100 meters. <BR /> <BR /> This distance is stated in the <A href="http://standards.ieee.org/announcements/802.3ab.html" target="_blank" rel="nofollow noreferrer noopener">802.3ab Ratification press release</A>. <BR /> <BR /> Unless all four pairs are utilized for 10/100/1000 port attachment, the peer ports may or may not be able to attain link; and if they attain link, they will likely not be able to reliably pass traffic. This is true of both straight-through and crossover pinouts, at any line speed. <BR /> <BR /> See also: <A href="http://bit.ly/I5gwKo" target="_blank" rel="nofollow noreferrer noopener">4593</A>. Thu, 21 Nov 2013 21:52:00 GMT https://community.extremenetworks.com/t5/faqs/what-is-the-maximum-link-distance-for-1000base-t/m-p/44311#M245 FAQ_User 2013-11-21T21:52:00Z