DHCP service on Windows Server isn't communicating with MikoTik CRS305-1G-4S+IN via SwOS.
DHCP service on Windows Server isn't communicating with MikoTik CRS305-1G-4S+IN via SwOS.
Hi, I'm trying to switch my ISP's router DHCP server to a Windows Server DHCP setup. Most functions are working, but the CRS305 is blocking all traffic. Initially I thought the MikroTik wouldn't allow DHCP offers, but even with a static client connected, nothing happens. I have several other switches that function properly, so this one seems to be the issue. Thanks!
Hi, I confirmed the issue started on RouterOS and faced many challenges. After extensive testing, it became clear that connecting DHCP from Windows Server was problematic under SwOS—when switched to SWOS it automatically uses DHCP and falls back to static if needed. The device failed to acquire an IP address, preventing access. I also attempted a DHCP server using TFTP32 with direct switch connection, but the process repeated the same issue. The lease expiration times on TFTP32 seemed to keep shifting, as if the switch was constantly searching. Eventually, I used my iPhone to share its internet connection, which created a DHCP server and allowed me to bridge my Wi-Fi and wired interfaces. I obtained an IP from the iPhone's DHCP and successfully changed the MikroTik’s IP to static. Now I’m back to where I was trying to use it as a simple switch; I’ll reinsert it into the network soon and keep you posted.
I simply reconnected it and it functioned initially. The setup was identical to before—just used it as a basic switch without any changes. However, the behavior remains quite unusual.