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You can use the
mdix auto
interface configuration command in the command-line interface (CLI) to enable the automatic
medium-dependent interface crossover (auto-MDIX) feature. When the auto-MDIX feature is enabled, the switch detects
the required cable type for copper Ethernet connections and configures the interfaces accordingly.
Power over Ethernet Ports
On the IE 2000U-16TC-GP model of the IE 2000U switch, four of the 10/100BASE-T ports are available as PoE ports.
The four ports can operate either as PoE (IEEE 802.3af) ports or can be configured to operate as PoE+ (IEEE 802.at) ports.
In order to operate 10/100 ports as PoE ports, a separate DC power source is required. For more information, see
Connecting Power to the Switch PoE DC-Input (Optional), page 53
.
Cable lengths of up to 328 feet (100 m) are supported.
10/100/1000BASE-T Ports
The IEEE 802.3u 10/100/1000BASE-T ports provide full-duplex 10, 100 or 1000 Mb/s connectivity over CAT5
unshielded twisted pair (UTP) copper cabling. The default setting is autonegotiate.
Cable lengths of up to 328 feet (100 m) are supported.
100 Mb/s SFP Module Slots
The IEEE 802.3u 100 Mb/s SFP module slots provide full-duplex 100 Mb/s connectivity over multi-mode (MM) fiber
cables or single-mode (SM) fiber cables. These ports use a SFP fiber-optic transceiver module that accepts a dual local
connector (LC). Check the SFP specifications for the cable type and length.
100/1000 Mb/s SFP Module Slots
The IEEE 802.3u 100/1000 Mb/s SFP module slots provide full-duplex 100 or 1000 Mb/s connectivity over multi-mode
(MM) fiber cables or single-mode (SM) fiber cables. These ports use a SFP fiber-optic transceiver module that accepts
a dual LC connector. Check the SFP specifications for the cable type and length.
Dual-Purpose Fast Ethernet Ports
You can configure the dual-purpose Fast Ethernet ports on the switch as either 10/100BASE-T ports or as 100 Mb/s
SFP-module ports. You can set the 10/100BASE-T ports to autonegotiate, or you can configure them as fixed 10 or 100
Mb/s (Fast) Ethernet ports.
By default, the switch selects the medium for each dual-purpose port (10/100BASE-T or SFP). When a link is achieved
on one media type, the switch disables the other media type until the active link goes down. If links are active on both
media, the SFP-module port has priority, but you can use the
media-type
interface configuration command to manually
designate the port as an RJ-45 port or an SFP port.
You can configure the speed and duplex settings consistent with the selected media type. For information on configuring
interfaces, see the
Cisco Connected Grid Switches Interfaces Software Configuration Guide
.
Dual-Purpose Gigabit Ethernet Ports
You can configure the dual-purpose Gigabit Ethernet ports on the switch as either 10/1001000BASE-T ports or as
100/1000 Mb/s SFP-module ports. You can set the 10/100/1000BASE-T ports to autonegotiate, or you can configure
them as fixed 10, 100, or 1000 Mb/s (Gigabit) Ethernet ports.
