Cabletron Systems NBR-620 Using LANVIEW, NBR-SERIES Installation Guide, Page, Color, Description

			Using LANVIEW
	Table 4-1 LANVIEW LEDs (Continued)
LED	Color	Description	Error Condition/
			Recommended Action
COLLISION	Red	Collision detected	Excessive flashing, or a solid
A, B, C, D		on a segment.	light, indicates an inordinate
		When the LAN is	number of collisions. This
		operating properly,	may be normal if there is a
		occasional flashing	high amount of traffic.
		is normal.
			Ensure that the SQE test is
			disabled for any transceiver
			connected to the external
			channels (A, B, C, or D) of
			the NBR. Check cabling for
			data loops or defective
			cables.
STAND BY	Yellow	Indicates packets	Network Management has
A, B, C, D		cannot be	placed the NBR in a Standby
		forwarded as the	mode; a data loop condition
		Spanning Tree	exists.
		Algorithm has put
		the corresponding	Check with your Network
		Bridge Port into a	Administrator to find out if the
		standby mode.	NBR was placed in Standby
			intentionally.

NBR-SERIES Installation Guide Page 4-3