Cabletron Systems SEHI-22FL - Manual (Page 46)

Chapter 6: Troubleshooting
6-2 SEHI User’s Guide
2. If the remote station is ready and the LNK LED is on, but no data
passes through the port, one of the following two conditions may exist:
• Network management disabled the port.
• The port is segmented either because the collision detector was on
for more than 110
µ
s or the SEHI detected more than 32
consecutive collisions on the attached segment. The affected port
remains segmented until a good packet is transmitted/received
without collisions.
If the LNK LED is still off, contact Cabletron Systems Technical
Support.
6.2 USING LANVIEW
The SEHI incorporates the Cabletron Systems LANVIEW status
monitoring and diagnostics system. LANVIEW LEDs help diagnose
problems such as power failure or cable fault. The SEHI uses the
following LANVIEW LEDs:
• PWR, for power status
• CPU, for board status
• RCV (Receive), LNK (Link), and CLN (Collision) for Ethernet
status.
Figure 6-1 provides a quick reference chart of LED locations and
definitions. This chapter also includes a detailed description of each LED.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM