I have upgraded to FW 1.3.5.58 about 2 months ago. Everything seems to be working as expected. Just recently, I noticed that If I rebooted one of my IP phones that is powerd from the switch, no DHCP lease. I currently have this connected to a Cisco 891 router which is doing the DHCP server function. My voice vlan (200) and client vlan (100) both get DHCP this way. I have had no issues with DHCP on the vlan 100, and was just noticing the issue with vlan 200.
So, I go to manage the switch, and I get no connectivity. I have a management vlan (1) which is how I usually manage the switch, but cant ping the address. the SG300 is doing L3 routing so I have an address on Vlan 100 as well, cannot ping that either. Other than this, my network has been working like normal. The odd thing is that I have vlan 1 and vlan 100 dual stacked with IPV6. I can connect to each of the vlan 1 and vlan 100 IPV6 addresses. When I log into the switch via IPV6, everything looks normal, no indication of issues in the logs.
Getting frustrated, I end up rebooting the switch. LIke magic, I can ping V4 vlan 1 and V4 vlan 100, everything looks good. DHCP passing to the 891 for vlan 200, phones are getting addresses.
24 hours later, I go to check the vlan 1 V4 connectivity, and nothing. Vlan 100, nothing. Reboot the switch again, works great.
Im noticing a lot of threads about ARP and seems like I could be running into this issue as well. I recently downgrades to 1.3.0.62. Ill watch that for a day or 2 and see how it does.
