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Gigabit Uplink Web Smart Switch
HD:
¾
half-duplex, the port supports transmission between the device and the client
in only one direction at a time.
FD:
¾
full-duplex, the port supports transmission between the device and its link
partner in both directions simultaneously.
Auto negotiation is a protocol between two link partners that enables a port to
advertise its transmission rate and duplex mode to its partner.
Flow control enables lower speed devices to communicate with higher speed devices.
This is implemented by the higher speed device refraining from sending packets.
If the port security is enabled, it will not learn new MAC address and only transmit the
frames from the MAC address list in the port’s static MAC address table.
Port Statistic calculates the statistics of each port, such as how many frames, error
frames, broadcast frames it has received and so on.
Port Status indicates whether the port is linked, not linked or disabled, what speed and
duplex mode it is working on, and whether flow control is enabled or disabled.
Storm control limits the amount of multicast, broadcast and UL (the address hasn't
been learned) frames accepted and forwarded by the device. When Layer 2 frames are
forwarded, broadcast, multicast and UL frames are flooded to all ports on the relevant
VLAN. This occupies bandwidth, and loads all nodes on all ports.
A Storm is a result of an excessive amount of these frames simultaneously transmitted
across a network by a single port. Forwarded message responses are heaped onto the
network, straining network resources or causing the network to time out. Storm control
is enabled for all ports by defining the packet type and the rate at which the packets
are transmitted. The system measures the incoming defined frame rates on each port,
and discards the frames when the rate exceeds a user-defined rate.
Use a description word to indicate the port.
Fuction Description