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Chapter 1: Overview
10/100/1000Base-T Twisted Pair Ports
Basic Features
Speed
Duplex Mode
28
The AT-FS980M/9, AT-FS980M/9PS, AT-FS980M/18 and
AT-FS980M/18PS switches have one or two 10/100/1000Base-T ports.
The two ports of the AT-FS980M/9, AT-FS980M/9PS, AT-FS980M/18,
and AT-FS980M/18PS switches are paired with SFP slots to form combo
ports.
Here are the basic features of the 10/100/1000 Mbps twisted pair ports:
10Base-T, 100Base-TX, and 1000Base-T 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
IEEE 802.3x backpressure in 10/100Base-TX half-duplex
operation
Support for jumbo frames up to 10KB
Support for store-and-forward switching
RJ-45 connectors
The ports can operate at 10, 100, or 1000 Mbps. The speeds may be set
manually using the management software or automatically with Auto-
Negotiation (IEEE 802.3u), the default setting.
Note
The ports must be set to Auto-Negotiation to function at 1000 Mbps.
They are not compatible with devices that are not IEEE 802.3u
compliant.
The twisted pair ports can operate in either half- or full-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.
The speed and duplex mode settings of a port may be set independently
of each other. For example, a port may be configured such that its speed
is set manually while its duplex mode is established through Auto-
Negotiation.
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