Store-And-Forward; Auto-Negotiation - Planet IGS-801T User Manual

4.4 Store-and-Forward

Store-and-Forward is one type of packet-forwarding techniques.
A Store-and Forward Industrial Gigabit Ethernet Switch stores the
incoming frame in an internal buffer, do the complete error checking
before transmission. Therefore, no error packets occurrence, it is the
best choice when a network needs efficiency and stability.
The Industrial Gigabit Ethernet Switch scans the destination address
from the packet-header, searches the routing table provided for the
incoming port and forwards the packet, only if required. The fast
forwarding makes the switch attractive for connecting servers directly
to the network, thereby increasing throughput and availability. However,
the switch is most commonly used to segment existing hubs, which
nearly always improves overall performance. An Ethernet Switching
can be easily configured in any Ethernet network environment to
significantly boost bandwidth using conventional cabling and adapters.
Due to the learning function of the Industrial Gigabit Ethernet Switch,
the source address and corresponding port number of each incoming
and outgoing packet are stored in a routing table. This information is
subsequently used to filter packets whose destination address is on the
same segment as the source address. This confines network traffic to
its respective domain, reducing the overall load on the network.
The Industrial Gigabit Ethernet Switch performs "Store and Forward"
therefore, no error packets occur. More reliably, it reduces the re-
transmission rate. No packet loss will occur.

4.5 Auto-Negotiation

The STP ports on the Industrial Gigabit Ethernet Switch have built-
in "Auto-negotiation". This technology automatically sets the best
possible bandwidth when a connection is established with another
network device (usually at Power On or Reset). This is done by detect
the modes and speeds at the second of both device is connected and
capable of, both 10Base-T and 100Base-TX devices can connect with
the port in either Half- or Full-Duplex mode. 1000Base-T can be only
connected in Full-duplex mode.
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