https://community.extremenetworks.com/t5/faqs/d-series-dropping-telnet-sessions/m-p/49402#M588 Article ID: 11405 <BR /> <BR /> <B>Products</B><BR /> D-Series, firmware 1.00.04.0001 and lower <BR /> <BR /> <B>Changes</B><BR /> Established a Telnet session to the switch host. <BR /> <BR /> <B>Symptoms</B><BR /> The Telnet session drops, possibly while the user is typing into the CLI. <BR /> The Telnet session worked for awhile, then failed.<BR /> The length of time a session lasts before being dropped is random. <BR /> <BR /> Below is an example of what a user might see. In this case the user was in the middle of typing a 'show port status' command when the Telnet session was lost.<BR /> <UL> D2(su)-&gt;show port s Connection to host lost C:\Documents and Settings\myuser&gt;</UL><B><BR /> Cause</B><BR /> This is due to the presence of a large number of ARP packets being forwarded. <BR /> <BR /> <B>Solution/Workaround</B><BR /> Upgrade to firmware 6.03.01.0008 or higher, then utilize the CPU Rate Limiting 'hostprotect' command set as explained in <A href="http://bit.ly/WDy6fp" target="_blank" rel="nofollow noreferrer noopener">11765</A>. <BR /> <BR /> Pre-upgrade workaround: Restart the Telnet session, or use SSH or the Serial console. Wed, 13 Nov 2013 01:12:00 GMT FAQ_User 2013-11-13T01:12:00Z https://community.extremenetworks.com/t5/faqs/d-series-dropping-telnet-sessions/m-p/49402#M588 Article ID: 11405 <BR /> <BR /> <B>Products</B><BR /> D-Series, firmware 1.00.04.0001 and lower <BR /> <BR /> <B>Changes</B><BR /> Established a Telnet session to the switch host. <BR /> <BR /> <B>Symptoms</B><BR /> The Telnet session drops, possibly while the user is typing into the CLI. <BR /> The Telnet session worked for awhile, then failed.<BR /> The length of time a session lasts before being dropped is random. <BR /> <BR /> Below is an example of what a user might see. In this case the user was in the middle of typing a 'show port status' command when the Telnet session was lost.<BR /> <UL> D2(su)-&gt;show port s Connection to host lost C:\Documents and Settings\myuser&gt;</UL><B><BR /> Cause</B><BR /> This is due to the presence of a large number of ARP packets being forwarded. <BR /> <BR /> <B>Solution/Workaround</B><BR /> Upgrade to firmware 6.03.01.0008 or higher, then utilize the CPU Rate Limiting 'hostprotect' command set as explained in <A href="http://bit.ly/WDy6fp" target="_blank" rel="nofollow noreferrer noopener">11765</A>. <BR /> <BR /> Pre-upgrade workaround: Restart the Telnet session, or use SSH or the Serial console. Wed, 13 Nov 2013 01:12:00 GMT https://community.extremenetworks.com/t5/faqs/d-series-dropping-telnet-sessions/m-p/49402#M588 FAQ_User 2013-11-13T01:12:00Z