Summit 300-48 Rear View - Extreme Networks Summit 200-24 Hardware Installation Manual

Summit 300 Switch Overview
1000BASE-T connection for each port. On the Summit 300-48 it is ports 1:49-1:52 that 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 first two of the 10/100/1000BASE-T ports on the Summit 300-24 and the
four fiber ports and the first four of the 10/100/1000BASE-T ports 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 is based upon the order
in which the connectors are inserted into the switch. When the switch senses 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 inserted a SFP
connector into port 24 and then a 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
is another failure or a user changes the assignment using the CLI. To change the uplink failover
assignment, use the following command:
<Link>configure ports <nnn> preferred-medium {copper} | {fiber} |[force]
The default preferred-medium is fiber. If you use the
force the preferred-medium to fiber and the fiber link goes away, the copper link is not used, even if
available.
Full-Duplex
The Summit 300-48 switch provides full-duplex support for all ports. Full-duplex allows frames to be
transmitted and received simultaneously and, in effect, doubles the bandwidth available on a link. All
10/100 Mbps ports on the Summit 300-48 switch autonegotiate for half- or full-duplex operation.

Summit 300-48 Rear View

Figure 13 shows the rear view of the Summit 300-48 switch.
Figure 13: Summit 300-48 switch rear view
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option, it disables automatic failover. If you
force
PSU-B
PSU-A
Power socket
Power switch
LB48002B
Consolidated "e" Series Hardware Installation Guide