I have a cisco switch 2950 and a router 2600 series. My link between the switch and the router is down. I am using port 24 on the switch to connect it to the router. It is showing green light and blinking. However, the user is not able to connect to the network, cannot use internet and is offline basically. To rectifiy this i took a cable and connect the switch to another switch. And now the user is up and running which means user is on the network, using internet and accessing the servers and everything.
After doing this I am quite positive that the trouble is between the link of the switch and the router. How can i troubleshoot this issue?