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10/100Base-TX Twisted Pair Ports
Basic Features
Backpressure
Speed
Duplex Mode
The switches have 8, 16, 24, or 48 10/100Base-TX ports.
Here are the basic features of the 10/100 Mbps twisted pair ports:
10Base-T and 100Base-TX compliant
IEEE 802.3u Auto-Negotiation compliant
Auto-MDI/MDIX
100 meters (328 feet) maximum operating distance
IEEE 802.3x flow control in 10/100Base-TX full-duplex operation
Support for jumbo frames up to 10KB
Support for store-and-forward switching
RJ-45 connectors
Support for IEEE 802.3x backpressure in 10/100Base-TX half-duplex
operation depends upon a switch model:
Backpressure is supported on the AT-FS980M/9,
AT-FS980M/9PS, AT-FS980M/18, and AT-FS980M/18PS
switches.
To support backpressure on the AT-FS980M/28 or
AT-FS980M/28PS switch, you must upgrade the management
software to version 5.4.6-2.1 or later.
Backpressure is not supported on the AT-FS980M/52 and
AT-FS980M/52PS switches.
The ports can operate at either 10 or 100 Mbps. The speeds may be set
manually using the management software or automatically with Auto-
Negotiation (IEEE 802.3u), the default setting.
The twisted pair ports can operate in either half- or full-duplex mode. The
duplex mode determines the manner in which a port transmits data. A port
set to half-duplex can either transmit or receive data at one time, while a
port operating in full-duplex can transmit and receive data at the same
time. The best network performance is achieved with the full-duplex
setting, but not all network equipment is designed to support that duplex
mode.
The duplex modes, like port speeds, may be set manually using the
management software or automatically with Auto-Negotiation (IEEE
802.3u), the default setting.
FS980M Series Fast Ehternet Managed Switches Installation Guide
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