4
Overview
The Metrobility 10/100 AutoTwister provides seamless migration between
Ethernet and Fast Ethernet networks, in addition to built-in media conversion
allowing high-speed integration of fiber optic and twisted-pair segments. A complete
set of LEDs allows for quick status verification, and a bank of DIP switches provides
added versatility on each port. To optimize your Ethernet network, each port operates
independently in either half or full duplex.
The 10/100 AutoTwister standalone units offer the following key features:
• Auto-negotiation switch on the twisted-pair interface.
• Half to full duplex conversion.
• Link loss auto-recovery on the fiber optic port.
• Link Loss Return (LLR) functionality to aid in troubleshooting a remote
network connection on the fiber optic port.
• Link Loss Carry Forward (LLCF) functionality to aid in troubleshooting a
remote network connection.
• An MDI-II to MDI-X switch that eliminates the need for crossover cables
on the twisted-pair port.
• Full-duplex flow control on each port.
• Store-and-forward switching to improve overall network performance by
buffering packets during times of heavy congestion and to prevent the for-
warding of corrupted packets.
• High-performance switching engine that performs forwarding and filtering
at full wire speed (148,800 packets per second).
• The ability to learn up to 1,024 MAC addresses.
• Low last-bit-in to first-bit-out delay.
• VLAN tagging support.
• Discards short packets (less than 64 bytes) and packets with CRC or align
-
ment errors.
• Maximum transmission unit (MTU) size of 1522 bytes.
• 128K bytes of buffer memory.
•
Full compliance with applicable sections of IEEE 802.3, IEEE 802.3u, and
IEEE 802.3x.
