I am using a cisco 2950 for upgrading some CPEs. The CPE gets IP from a DHCP server connects to the same switch.
upgrade CPE takes about 2 minutes, then they will be unplugged from switch and new CPE will be plugged in. Then I found out some switch ports shutdown after a few times, though I have put no shutdown on all ports.
However those ports will work again if I cold restart the switch.
Here I attached the config. Could anybody please help me find out why?