Full-Duplex Support; Summit 300 "E" Series Switches; Summit 300 Features - Extreme Networks Summit 300-24 Hardware Installation Manual

Uplink Redundancy on the Summit 200-24fx Switch
Gigabit Ethernet uplink redundancy on the Summit 200-24fx switch follows these rules:
• Only one interface on each port can be active at a time. For example, on port 25, with both the
mini-GBIC and 1000BASE-T interfaces connected, only one interface can be activated. The other is
inactive.
• If only one interface is connected, the switch activates the connected interface.
• The switch determines whether the port uses the fiber or copper connection 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 25 and 26, and then connect copper ports 25 and 26, the switch
assigns the copper ports as redundant ports.
• To set up a redundant link on a port, connect the active fiber and 1000BASE-T links to both the RJ-45
and mini-GBIC interfaces of port 49. The switch defaults to the fiber link. If the fiber link fails during
operation, the switch automatically activates the redundant 1000BASE-T link.
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:
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 Support

The Summit 200 switches provide 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 200 switch autonegotiate for half- or full-duplex operation.

Summit 300 "e" Series Switches

The Summit 300 "e" series switches include the following switch models:
• Summit 300-24 switch
• Summit 300-48 switch

Summit 300 Features

The Summit 300 series switch supports wireless and Power over Ethernet (PoE) networks. These
switches provide 24 or 48 autosensing 10BASE-T/100BASE-TX ports using RJ-45 connectors.
The Summit 300 series switches also provide either two or four uplink ports implemented as
combination ports that pair a copper port using RJ-45 connectors with an optical port using LC
connectors. The copper port operates as an autonegotiating 10/100/1000BASE-T port. The optical port
allows Gigabit Ethernet uplink connections through Extreme small form factor pluggable (SFP) gigabit
interface connectors (GBICs), also known as mini-GBICs. Only one port in the combination pair can be
Extreme Networks Consolidated "i" and "e" Series Hardware Installation Guide
option, it disables automatic failover. If you
force
Summit 300 "e" Series Switches
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