Chapter 3 Hardware Panels
GS1500-24P User’s Guide
32
3.2.1 Gigabit Ethernet Ports
The Switch has 1000Base-T auto-negotiating, auto-crossover Ethernet ports. In
10/100/1000 Mbps Gigabit, the speed can be 10 Mbps, 100 Mbps or 1000 Mbps
and the duplex mode can be half duplex or full duplex.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed
(10/100/1000 Mbps) and duplex mode (full duplex or half duplex) of the
connected device.
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-
through or crossover Ethernet cable.
Four 1000Base-T Ethernet ports are paired with a mini-GBIC slot to create a dual
personality interface. The Switch uses up to one connection for each mini-GBIC
and 1000Base-T Ethernet pair. The mini-GBIC slots have priority over the Gigabit
ports. This means that if a mini-GBIC slot and the corresponding GbE port are
connected at the same time, the GbE port will be disabled.
When auto-negotiation is turned on, an Ethernet port negotiates with the peer
automatically to determine the connection speed and duplex mode. If the peer
Ethernet port does not support auto-negotiation or turns off this feature, the
Switch determines the connection speed by detecting the signal on the cable and
using half duplex mode. When the Switch’s auto-negotiation is turned off, an
Ethernet port uses the pre-configured speed and duplex mode when making a
connection, thus requiring you to make sure that the settings of the peer Ethernet
port are the same in order to connect.
3.2.1.1 Default Ethernet Negotiation Settings
The factory default negotiation settings for the Gigabit ports on the Switch are:
• Speed: Auto
•Duplex: Auto
Four Dual
Personality
Interfaces
Each interface has one 1000BASE-T RJ-45 port and one Small Form-Factor
Pluggable (SFP) slot (also called a mini-GBIC slot), with one port or
transceiver active at a time.
• Four 100/1000 Mbps RJ-45 Ports:
Connect these ports to high-bandwidth backbone network Ethernet
switches using 1000BASE-T compatible Category 5/5e/6 copper cables.
•Four Mini-GBIC Slots:
Use mini-GBIC transceivers in these slots for connections to backbone
Ethernet switches.
Table 1 Front Panel Connections (continued)
LABEL DESCRIPTION
To Next Page
Loading...
