https://community.extremenetworks.com/t5/extremeswitching-other/problems-with-adtran-router-and-port-negotiation-with-670v-48t/m-p/11376#M2404 Hello all,<BR /> <BR /> Does anyone have experience with AdTran routers? I bought a NetVanta 3140 and tried to install it this morning, but I ran into some God-awful negotiation issues.<BR /> <BR /> Initially I was trying to connect it to a 670v-48t running ExtremeXOS 16.2.3.5-patch1-14 but the port kept trying to come up 100 Full Duplex. I went into the AdTran and forced the port to 1000 Full Duplex, but then I couldn't get a connection to the Extreme switch at all. On the Extreme side, I tried to set it to 1000 Full Duplex, but it wouldn't let me do that. It seems that is the expected result (you can't do that!).<BR /> <BR /> * switch-core2.6 # conf port 30 auto off speed 1000 duplex fullError: Auto negotiation off is not supported on port 30 at 1G speed.<BR /> Next I tried connecting it to my Summit 450-G2 running ExtremeXOS 22.3.1.4. It connected right away at 1000 Full Duplex (without having to play with the port properties). But I am dropping packets like a madman. When I tried running a 'speed test' the packet loss was just plain nasty. Even connecting to the interface and running commands seems to lag it out.<BR /> <BR /> I had upgraded the firmware out of the box with the AdTran. So I tried rolling back to the factory installed OS, but I still had the same issues. Perhaps the AdTran is just 'junk'? It was rather cheap as far as routers go. If anyone has a better suggestion for which was to go with a new router - I am also taking advice. I am trying to replace an end-of-life Cisco 2801.<BR /> <BR /> Thanks!<BR /> <BR /> Tue, 17 Oct 2017 15:58:00 GMT Steve_Ballantyn 2017-10-17T15:58:00Z https://community.extremenetworks.com/t5/extremeswitching-other/problems-with-adtran-router-and-port-negotiation-with-670v-48t/m-p/11376#M2404 Hello all,<BR /> <BR /> Does anyone have experience with AdTran routers? I bought a NetVanta 3140 and tried to install it this morning, but I ran into some God-awful negotiation issues.<BR /> <BR /> Initially I was trying to connect it to a 670v-48t running ExtremeXOS 16.2.3.5-patch1-14 but the port kept trying to come up 100 Full Duplex. I went into the AdTran and forced the port to 1000 Full Duplex, but then I couldn't get a connection to the Extreme switch at all. On the Extreme side, I tried to set it to 1000 Full Duplex, but it wouldn't let me do that. It seems that is the expected result (you can't do that!).<BR /> <BR /> * switch-core2.6 # conf port 30 auto off speed 1000 duplex fullError: Auto negotiation off is not supported on port 30 at 1G speed.<BR /> Next I tried connecting it to my Summit 450-G2 running ExtremeXOS 22.3.1.4. It connected right away at 1000 Full Duplex (without having to play with the port properties). But I am dropping packets like a madman. When I tried running a 'speed test' the packet loss was just plain nasty. Even connecting to the interface and running commands seems to lag it out.<BR /> <BR /> I had upgraded the firmware out of the box with the AdTran. So I tried rolling back to the factory installed OS, but I still had the same issues. Perhaps the AdTran is just 'junk'? It was rather cheap as far as routers go. If anyone has a better suggestion for which was to go with a new router - I am also taking advice. I am trying to replace an end-of-life Cisco 2801.<BR /> <BR /> Thanks!<BR /> <BR /> Tue, 17 Oct 2017 15:58:00 GMT https://community.extremenetworks.com/t5/extremeswitching-other/problems-with-adtran-router-and-port-negotiation-with-670v-48t/m-p/11376#M2404 Steve_Ballantyn 2017-10-17T15:58:00Z https://community.extremenetworks.com/t5/extremeswitching-other/problems-with-adtran-router-and-port-negotiation-with-670v-48t/m-p/11377#M2405 This has been resolved. I believe that the issue was a known bug with the firmware involving the LLDP protocol. The fix was to apply "<I>no lldp send-and-receive"</I> on all interfaces.<BR /> <BR /> <A href="https://supportforums.adtran.com/thread/8570" target="_blank" rel="nofollow noreferrer noopener">Here is a thread</A> on the issue for anyone else that ends up in this boat.<BR /> Thu, 26 Oct 2017 16:07:00 GMT https://community.extremenetworks.com/t5/extremeswitching-other/problems-with-adtran-router-and-port-negotiation-with-670v-48t/m-p/11377#M2405 Steve_Ballantyn 2017-10-26T16:07:00Z