Hi, I don’t see any listed limits Page 375 [URL] but eventually it will be too much bandwidth for the port and it will miss packets, so it depends on how much traffic you have.
S4128F-ON   I have some question about port mirroring, what is maximum number of source port for one destination port? I can find the value about it from other device's configuration guide or something, but can't find exact this device the S4128F-ON.   and as I know, the interface is changed from port to vlan or port-channel. if 128 source ports are allowed for 1 destination port, is it ok 128 vlans included 128+ ports for source interfaces?
S4128F-ON about local port mirroring