Table 2. LEDs status descriptions
LED
Position
State
Meaning
10/100/1000 Port LEDs
Lnk/Act
Bottom Left
(beneath the port)
On
Link is up.
Off
Link is down.
Blinking
Port is transmitting or
receiving traffic.
B48C and B50C network interfaces
This section describes the port types in the switches.
10/100/1000 Mbps RJ45 ports:
The 10/100/1000 RJ45 ports on the devices use
auto-sensing and auto-negotiating to determine the speed (10 Mbps, 100 Mbps, or
1000 Mbps) and duplex mode (full-duplex or half-duplex) of the port at the other
end of the link and adjust port speed accordingly.
Combination ports:
On devices with combo ports, one port out of each pair of
copper and fiber ports can be active at a time. Combo ports are numbered 1-4. For
example, you can use either copper port 2 or fiber port 2, but not both at the same
time. You can use a combination of fiber and copper ports or all copper or all fiber
ports, as needed.
If you attach both the copper and fiber connectors for a port to the network, the
fiber connectors take precedence over the copper connectors. These ports support
true media automatic detection, meaning the device selects the fiber or copper
connector based on link availability. If a fiber link cannot be established, the device
selects the copper media.
10-Gbps ports:
The B50C models come with 10-gigabit Ethernet ports installed.
The 10-gigabit Ethernet ports use 10-gigabit Small Form Factor Pluggable (XFP)
MSA-compliant transceivers.
Table 3. LEDs for the B50C ports
LED
Position
State
Meaning
10–Gpbs Port LEDs
Lnk
Top right for left-most
connector
Top left for right-most
connector
On
The port is connected.
Off
No fiber port connection exists.
Act
Bottom right for
left-most connector
Bottom left for
right-most connector
On or Blinking Traffic is being transmitted and
received on the fiber port.
Off
No traffic is being transmitted on
the fiber port.
Supported optics
100/1000 Mbps Hybrid Fiber ports
The Hybrid Fiber models of the B48C and B50C Ethernet Switches contain 48 SFP
ports to which you can connect your switch to other network devices at a speed of
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IBM Ethernet Switch c-series Installation and User Guide
Summary of Contents for 4002-C4A
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