Hi there,
I need help regarding SF220/SG220-series switches. I have not found any articles on the Cisco community forums (not even anywhere else) regarding the 220-series so I decided to write down my problems.
I have some experience on using SF220/SG220 series switches. We have about 4 sites with these models. 3 sites have multi-level switching architecture such as having a core switch under which there is/are one or more access switches.
My problems (used different firmware: 1.0.0.17, 1.0.0.19. 1.1.1.2) in every case:
- time settings are not held after reboot, however running-config was definitely saved to startup-config .
- even if system time is good the syslog time has 8 hours time slide.
- ports go up/down. Even worse if spanning tree (non-rapid) is enabled becasue in that case port is unavailable for about 30-50 seconds. Ports in question are towards (amongst others) other core network devices such as router (draytek) and access points (ruckus)
I have limited knowledge on STP and in networking but I do know that my configuration should work as SF200/SG200 series on 20+ sites are set up the same way with the same other networking bits and the work brilliantly.
Also checked spanning tree stats on specific ports on SF220/SG220 series ports and they showed mostly "Configuration BDPUs Transmitted". In cases where there was value other than 0 on "TCN BDPUs Received" line the up/down event happens many more times than the counter value so the up/down behavior must be independent of spanning tree
Energy settings are set untouched in every case.
Any help would be appreciated as I am keen to sort the issue (if possible anyway).
