I have a problem that is really bugging me. I have two Cisco SG300-20 switches. Both of them are configured in L3 mode. They have several VLAN's configured.
When I reboot my switches some VLAN membership settings are lost! I have already saved the settings over and over before rebooting, and even tried to save it to the backup memory and so on. Say for example I have changed port 9 to 14 from VLAN 101 to VLAN 105. I save the configuration, reboot the switch. And then the changes are lost. This is a big problem, because servers and my iSCSI network loose connectivity. They already have the latest firmware. This issue was there three firmwares before.
This issue pop-ups when I have a power loss, or I need to reboot/shutdown them manually. It may be off-topic but I also have the feeling that the performance of the switches goes down during uptime. A reboot solves the performance issue. I don't have a performance benchmark, but I can notice it on the performance transfer rate between clients and servers.
Thomas, I think you are pointing me into the right track! Although I am a bit familiar with smarport. I have checked the settings and can't find anything that might cause it. Of course worth to try.
Because I was having problems I reset the switch to factory defaults and reconfigured it. Right now, I don't have a problem anymore. I haven't reset my other swtich but I did disable smartport. I just haven't found a moment yet to reboot it. Once I have done that I will let you know. Thanks!
SF302-08P - updating to the recent firmware of 18.104.22.168 including boot, reset to factory default. use hyper terminal to reconfigure switch, to disable smartports per Tom's commands above, reconfigure VLANS on all ports, save mem and reboot. I tested the reboot, even did several power cycle and the fix solved the issue that I have been trying to figure out myself.
After the successful test, copied the running config of the reconfigured switch, downloaded it to another sf302-08p (make sure to edit the management IP of the running config file), did reboot, powercycle, success.....
Here is an update. As mentioned one switch is factory reset and is working properly. Now, on the other switch I have fully disabled auto smartpot. Today I have rebooted that switch. And again... VLAN membership gone for 6 ports. I am not going to investigate this any further. With a week I will factory reset the switch.
Sx550X, Sx350X, Sx250: PSE will Supply Power to Catalyst PSE Ports
May 31, 2016
June 5, 2017
Configure Remote Network Monitoring (RMON) Events Control Settings on a Switch through the Command Line Interface (CLI)
Remote Network Monitoring (RMON) was developed by the Internet Engineering Task Force (IETF) to support...