Description

While logging into the switch from your browser you may get an warning of invalid certificate and give you the option to accept the risk and continue. However after this the page will keep buffering and finally time out while presenting a related log message .

Symptoms

From Firefox browser you may get this error "PR_CONNECT_RESET_ERROR". Error of this sort on any browser means that the TCP connection was reset or the flow was broken and it maybe caused due to packets getting dropped due to exceeding the interface MTU on any interface in the path
 
Please check all outgoing interfaces in the path from client device to the switch and look for MTU errors in the output of "show interfaces extensive" . Verify if the errors are increasing when the client tries to access the switch via J-WEB.

Solution

Please increase the interface MTU using the following command :
 
#set interfaces <interface> mtu <MTU value>
 
Packet captures can be taken to verify the size of packets an MTU can be set accordingly or hit and trial can be used to gradually increase the MTU and monitor if the MTU errors have stopped increasing.

Modification History

2024-07-25: Article validated
2024-07-23 : Article Created