Gigabit And 10 Gigabit Ethernet Interfaces - ZyXEL Communications MSC1024G Series User Manual

Chapter 2 Hardware Connections
• Pins 3 and 11 are alarm input three.
The MSC signals an alarm when it detects an alarm on the ALARM input pins, the IES-5000
is overheated, the voltage readings are outside the tolerance levels a fan fails or another alarm
occurs.
To signal a minor alarm, the MSC opens the circuit for pins 4 and 12 and closes the circuit for
pins 5 and 12.
To signal a major alarm, the MSC opens the circuit for pins 13 and 6 and closes the circuit for
pins 14 and 6.
To signal a critical alarm, the MSC opens the circuit for pins 7 and 15 and closes the circuit for
pins 8 and 15.
Examples of an alarm on the MSC are when the MSC's voltage or temperature is outside of
the normal range.

2.3.2 Gigabit and 10 Gigabit Ethernet Interfaces

MSC1000G
• Interfaces 1 and 2 are Gigabit Ethernet SFP slots.
• Interfaces 3 and 4 are Gigabit Ethernet port/SFP slot pairs.
MSC1024G
• Interfaces 1 through 4 are Gigabit Ethernet SFP slots.
• Interfaces 5 and 6 are Gigabit Ethernet port/SFP slot pairs.
• Interfaces 7 and 8 are Gigabit Ethernet ports.
MSC1224G
• Interfaces 1 and 2 are 10 Gigabit Ethernet XFP slots.
• Interfaces 3 and 4 are Gigabit Ethernet SFP slots.
• Interfaces 5 and 6 are Gigabit Ethernet port/SFP slot pairs.
• Interfaces 7 and 8 are Gigabit Ethernet ports.
The XFP and SFP slots have priority over the Gigabit ports. This means that if a XFP or SFP
transceiver and the corresponding Gigabit port are connected at the same time, the Gigabit port
will be disabled.
The Ethernet ports are auto-negotiating and can detect and adjust to the optimum Ethernet
speed (100/1000 Mbps) and duplex mode (full duplex or half duplex) of the connected device.
The Ethernet ports are also auto-crossover (auto-MDI/MDI-X), they automatically work with
a straight-through or crossover Ethernet cable.
2.3.2.1 Uplink and Subtending
The Gigabit Ethernet SFP slots and ports can function in either subtending or uplink mode.
Connect a port in uplink mode to an backbone Ethernet switch or router. The management
switch card allows traffic between the ports in uplink mode and the DSL ports on the line
cards.
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MSC1000G/1024G/1224G Series User's Guide