Extreme Networks 17001 manual 24 or 1 48 21 -24, 45 48 are shared ports, Stack Number Indicator

Table 12: LEDs on the Summit X450, X450a, and X450e Switches (Continued)

Label or Type	Color/State	Meaning
PSU-E	Steady green	Normal operation
(External power supply)
	Blinking amber	Failure
	Off	No external power attached
Ethernet Ports	Steady green	Link OK
1 – 24 or 1 – 48 (21 –24 and
	Blinking green	Activity
45 – 48 are shared ports)
	Off	Link is not present or port is disabled.
Stack Number Indicator	Top half of number	This switch is the stack master.
	blinking
	Lower half of number	This switch is the stack backup.
	blinking
	Number lights steadily	This switch is a standby node (neither
		the master nor the backup).
	LED dark	This stackable switch is not in stacking
		mode.
Additional Port LED meanings for PoE switches: Summit X450e-24p & Summit X450e-48p
All front-panel ports	Steady amber	Port is powered with link, no traffic
	Blinking amber	Port is powered with link, traffic
	Slow blinking amber	Port is powered, with no link
	Alternating amber and	Port is faulted
	green
	Off	Port is not powered, no link or disabled
Rear Panel
Management Port	Steady green	Link OK
	Blinking green	Activity
Stacking Port	Steady green	Link OK
	Blinking green	Activity
SFP 1G Port	Steady green	Link OK
	Blinking green	Activity
XENPAK 10G Port	Steady green	Link OK
	Blinking green	Activity
	Off	Link down

Summit Family Switches Hardware Installation Guide 59