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Extreme Networks Consolidated "i" and "e" Series Hardware Installation Guide
Summit Switch Models
Figure 25: Power supply LEDs
Summit 300 Automatic Failover
The Summit 300 switches provide dual-media support on Gigabit Ethernet ports. On the Summit 
300-24, ports 24 and 25 are Gigabit Ethernet ports that have redundant PHY interfaces, one mini-GBIC 
and one 1000BASE-T connection for each port. On the Summit 300-48, ports 1:49 through 1:52 are 
dual-mode redundant ports. Only one media type (fiber or copper) can be active at the same time on 
those ports. 
The two fiber ports and the last two of the 10/100/1000BASE-T ports on the Summit 300-24 and the 
four fiber ports and the last four of the 10/100/1000BASE-T ports on the Summit 300-48 are designed as 
combination ports for uplink redundancy. When sharing ports, only the fiber medium or only the 
copper medium can be active at the same time. If copper medium 1 goes down while transmitting 
packets, fiber medium 1X activates and becomes the primary link.
The switch determines whether the port uses the primary or redundant media based on the order in 
which the connectors are inserted into the switch. When the switch senses that a mini-GBIC and a 
copper connector are inserted, the switch enables the uplink redundancy feature. For example, if you 
first insert mini-GBICs into ports 1:49 and 1:51 on the Summit 300-48, and then connect copper ports 1:1 
and 1:3, the switch assigns ports 1:1 and 1:3 as redundant ports. On the Summit 300-24, if you insert a 
mini-GBIC into port 24 and then an Ethernet cable connector into port 1, fiber becomes the primary 
uplink port and port 1 becomes the redundant port. 
Hardware determines when a link is lost and swaps the primary and redundant ports to maintain 
stability. After a failover occurs, the switch keeps or sticks with the current port assignment until there 
Table 14: Summit 300-48 power supply LED activity
Condition
IN LED 
Indication
TEMP LED
Indication
OUT LED 
Indication
Normal
Green
Off
Green
Supply Inhibited or overloaded
Green
Off
Off
Input AC Low or Missing
Off
Off
Off
Fan Failure or Over Temperature
Green
Amber
Off
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