Cisco IE4000 Blinking Amber Lights

Question

I have an IE4000 Cisco Switch running my small air gapped network. I came in this morning and found that ALL the ports other than the Trunk port are blinking Amber. I checked the config and the interfaces and found that the ports are up and the link is up but I get no connection on any of my computers. Normally all the ports are green because all the computers are a 1G connection. I tried to reload the switch and watching it load it showed all the ports up. These are all Ethernet ports and I haven't made any changes to the configuration in the past 4 months. Only thing I can think of that the switch rebooted when the power went out. I don't believe this is a duplex error as all the ports haven't been changed and they have been working for months.

Now if this was a port security issue the ports would be solid amber and the port would show as "shutdown". I have checked the manual for the switch and there is no LED information for flashing amber. What else should I check to get all the ports back to normal and get my connections back?

Answer 1

After talking with some other network engineers they suggested I reenter the VLAN information. When doing a show vlan x command it said the vlans did not show up. Which is strange because I not only configured them, I named them and assigned them to specific ports. I am still unsure how the vlan database disappeared. We did have a power failure due to a storm here but even with the config and the vlan.dat file saved to flash that would not have removed the vlan.dat configuration and not the startup-configurations. Strange.

Answer 2

Blinking amber on the ports means PoE is off due to a fault. Perhaps the switch's power supply is malfunctioning and no longer able to provide PoE.

I'd take Zac67's advice and check the logs. However, it's a good guess the switch will need to be replaced.