1000Base-T Ports; Dual Personality Interfaces; Mini-Gbic Slots - ZyXEL Communications GS2200-48 User Manual

Chapter 3 Hardware Overview

3.1.1 1000Base-T Ports

The Switch has 48 1000Base-T auto-negotiating, auto-crossover Ethernet ports (4
of which are part of the Dual Personality interfaces). In 100/1000 Mbps Gigabit
Ethernet, the speed can be 100 Mbps or 1000 Mbps. The duplex mode can be both
half or full duplex at 100 Mbps and full duplex only at 1000 Mbps.
An auto-negotiating Gigabit Ethernet port can detect and adjust to the optimum
Ethernet speed (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.
3.1.1.1 Default Ethernet Settings
The factory default negotiation settings for the Ethernet ports on the Switch are:
• Speed: Auto
• Duplex: Auto
• Flow control: Off

3.1.2 Dual Personality Interfaces

There are 4 Dual Personality interfaces, comprising 4 1000Base-T/mini-GBIC
combo ports. For each interface you can connect either to the 1000Base-T port or
the mini-GBIC port. The mini-GBIC ports have priority over the 1000Base-T ports.
This means that if a mini-GBIC port and the corresponding 1000Base-T port are
connected at the same time, the 1000Base-T port will be disabled.

3.1.3 Mini-GBIC Slots

These are 6 slots for Small Form-Factor Pluggable (SFP) transceivers. Four of
them are part of the Dual Personality interfaces and two are used for high speed
uplink.
A transceiver is a single unit that houses a transmitter and a receiver. Use a
transceiver to connect a fiber-optic cable to the Switch. The Switch does not come
with transceivers. You must use transceivers that comply with the Small Form-
Factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA). See the SFF
committee's INF-8074i specification Rev 1.0 for details.
You can change transceivers while the Switch is operating. You can use different
transceivers to connect to Ethernet switches with different types of fiber-optic
connectors.
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GS2200-48 User's Guide