Planet GSD-805 [16/20] Store and forward

3.4 Store-and-Forward

Store-and-Forward is one type of packet-forwarding techniques.

A Store-and Forward 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 efciency and stability.

The 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 congured

in any Ethernet network environment to signicantly boost

bandwidth using conventional cabling and adapters.

Due to the learning function of the 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 lter packets whose

destination address is on the same segment as the source

address. This connes network trafc to its respective domain,

reducing the overall load on the network.

The 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.