Waters Network Systems
User’s Manual
Page 8
PSX/MS1008-TX
Ethernet switching technology dramatically boosted the total bandwidth of a network,
eliminating congestion problems inherent with the carrier sense multiple access with the
collision detection (CSMA/CD) protocol and greatly reduced unnecessary transmissions.
This revolutionized networking. First, by allowing two-way, simultaneous transmissions
over the same port (full-duplex), bandwidth was essentially doubled. Second, by
reducing the collision domain to a single switch-port, the need for carrier sensing was
eliminated. Third, by using the store-and-forward technology’s approach of inspecting
each packet to intercept corrupt or redundant data, switching eliminated unnecessary
transmissions that slow down network traffic.
Auto-negotiation regulates the speed and duplex of each port, based on the capability of
both devices. Flow-control allows transmission from a 100Mbps node to a 10Mbps node
without loss of data. Auto-negotiation and flow-control may have to be disabled for some
networking operations that involve legacy equipment. Disabling the auto-negotiation is
accomplished by hard setting the speed or duplex mode of a port.
3.1 Hardware
Features
Conforms to IEEE 802.3, 802.3u, and 802.3x Ethernet Standards
Auto-sensing 10/100Base-TX RJ45 port ports
Automatic MDI/MDIX crossover for each 10/100Base-TX port
Console port on rear side for system configuration
Half-duplex mode for backpressure
Full-duplex for flow control
Store-and-forward switching architecture
Automatic address learning, address migration
8K-entry MAC address table
2Mbit memory buffer sharing
Performs non-blocking full wire speed
