Cabletron Systems SEH-34 - Manual (Page 54)

TROUBLESHOOTING
Page 5-4
CLN (Red)
This LED indicates that a collision has occurred on one of the ports.
RCV (Yellow Flashing)
When this LED flashes, it indicates that the SEH is receiving data
packets from the associated port segment. Each SEH port has a
corresponding RCV LED:
• Network Ports: RCV LEDs 1-24
• EPIM-1: RCV LED E1
• EPIM-2: RCV LED E2
LNK (Green)
When a LNK LED is on, it indicates an established link between the
associated twisted pair segment and the 10BASE-T device at the other
end of the segment. LNK LEDs will remain on as long as a link is
maintained. Each SEH Network Port (ports 1-24) has a corresponding
LNK LED.