IP67 Switch Manual
© 2014. Red Lion Controls. All Rights Reserved.
14
Switching Features
6
6.1
Switching Features
Here are brief explanations of the features found in the IP67 Industrial Ethernet Switch documented by this manual.
10BaseT and 100BaseTx Auto-detection
Standard Ethernet (10BaseT) has a maximum speed of 10 Mbps in half duplex mode. Fast Ethernet (100BaseTx) has a
maximum speed of 200 Mbps in full duplex mode. The RJ45 ports on the IP67 Industrial Ethernet Switch will
automatically select the appropriate speed.
2.0 Gbps combined bandwidth
With full duplex and 100BaseTX communications, each port can provide a full 200 Mbps of data throughput.
1K MAC addresses with automatic learning, aging and migration
Each Ethernet device inserts its unique “MAC” address into each message it sends out. The port on the switch used for a
given MAC address is automatically learned when a frame is received from that address. Once an address is learned, the
switch will route messages to only the appropriate port, instead of broadcasting messages out all ports like a hub. A time
stamp is also placed in memory when a new address is learned. This time stamp is used with the aging feature, which
will remove unused MAC addresses from the table after 300 seconds. If a device moves, the associated port on the
switch will be changed (migrated) as needed. Up to 1,024 MAC addresses can be stored and monitored at any time.
Auto-crossover (auto-mdi/mdi-x)
The RJ45 ports will automatically detect the cable type (straight-thru vs. cross-wired) and re-configure themselves
accordingly.
Auto-sensing or auto-negotiating speed
The RJ45 ports of the IP67 Industrial Ethernet Switch will auto-negotiate with the connected device to determine the
optimal speed (10 Mbps vs. 100 Mbps) for each port.
Automatic Power Saving
If there is no cable on a port, most of the circuitry for that port is disabled to save power.
Backoff Operation
The IP67 Industrial Ethernet Switch will drop a packet after 16 collisions.
Back Pressure for Half-Duplex
The IP67 Industrial Ethernet Switch will apply “back pressure” when necessary with half-duplex operation. This “back
pressure” will reduce congestion on busy networks.
Broadcast Storm Protection
Broadcast messages are limited to 5% of the available bandwidth. Unicast and multicast messages are not limited.
Buffering
SRAM is used for buffering the messages. There are 1024 (128 bytes each) buffers available. Each port is allocated 113
buffers.
Unmanaged operation
The IP67 Industrial Ethernet Switch requires no supervisory processor to operate properly.
