How does worm hole routing improve Servernet router performance?
Wormhole routing is for lowest-latency switching. ServerNet technology uses a technique known as wormhole routing to reduce network latency. With this technique, a packet does not need to be completely received before being sent to its next destination (as with store and forward). Wormhole routing works by allowing the router to decode the header of the packet as it is received, then locate the port on which the packet will exit by using the headers destination address and the internal routing table. This one-time operation allows the packet to be directed through the crossbar switch while the remainder of the packet is still being received by the router. As a result, the header is routed and retransmitted well before the end of the packet has been received. Thus, the latency incurred by the router is much less than that of store-and-forward technology.
