The TX 5000E boards provide LEDs to indicate the status of the Ethernet interfaces and the trunk interfaces. The following illustration shows the location of the LEDs:
TX 5000E board end brackets have one green LED for each trunk. The trunk LEDs provide the following indications:
|
LED |
Description |
|
Off |
Trunk has not been configured. |
|
Slow blinking green |
Loss of signal. |
|
Fast blinking green |
Loss of frame or loss of signaling multiframe. |
|
Steady green |
Proper frame synchronization between the trunk and network has been established. All required framing alignment has been found. |
TX 5000E boards provide LEDs to indicate the status of each Ethernet interface. The following table describes the functionality of each LED:
|
LED |
Description |
|---|---|
|
LINK/ACT |
Status of the Ethernet link. When the Ethernet link has established link integrity, the LED is on and steady. It also indicates the transmitting and receiving activity on the link. When activity is present on the Ethernet link, the LED flickers. |
|
100 |
Data rate of the Ethernet link. When the LED is on, the data rate is 100 Mbit/s. When the LED is off, the data rate is 10 Mbit/s. The LED is used only when a reliable Ethernet connection has been established. (The LINK/ACT LED is on.) |
TX 5000E boards provide a set of DIP switches that you can use to override the default LED usage. By setting these switches, you can substitute TX operating system diagnostic information for the standard TDM trunk status, Ethernet connectivity status, or both. The following illustration shows the location of the LEDs and the alternative usage options:
The faceplate LEDs also show boot codes and unexpected exception codes that may occur. During initial system power-up or after a TX board is reset (using the txreset utility or the txflash –s option) the faceplate LEDs hold an 8-digit code. This code can be used if the board fails to help identify the root cause of the failure.
A boot code is identified when the Ethernet 3 LINK/ACT LED is ON and the Ethernet 3 Data rate LED is OFF. When both Ethernet 3 LEDs are ON, it indicates an unexpected exception code.
For these special cases, read the 8-bit diagnostic code from left to right with the first trunk connector to the left and the third Ethernet connector on the right. The trunk LEDs provide the high-order nibble of the code and the middle Ethernet connectors provide the low-order nibble of the code as shown:
