10 | System Overview
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Equipment
The following items are necessary to install the system:
• The switch
• At least one grounded AC or DC power source per S50V or S50N switch; one or two grounded DC
power sources per S50N-DC switch.
• Cable (included) to connect the AC power source to the switch
• Brackets for rack installation (included)
• Screws for rack installation (included) and #2 Phillips screwdriver (not supplied)
Other optional components are:
• Stacking cables for connecting switches when stacked (not supplied). See Connecting Stack Ports
(optional) on page 25.
• Backup DC Power Module (see Chapter
, Installing Backup Power, on page 29)
• Optical networking components (see Chapter
, Installing Ports, on page 41)
• Stacking components (see Ports
, below)
Features
• Internal power supply with power redundancy from built-in 1+1 AC/DC (AC: 110v/220v auto-detect;
DC: -48V standards-based with terminal-type connectors). The one difference between the S50V and
S50N is that the S50V has built-in support for 360W Power over Ethernet (PoE) — IEEE 802.3af —
with power allocation control available through the CLI.
• 256MB RAM and 32MB internal Flash memory
• Supports up to 32000 MAC address entries, with hardware-assisted aging
• Stackable switch features
• 19-inch rack-mountable and standard 1U chassis height
• Six built-in fans with automatic speed adjustment for temperature changes
• Supports 9252-byte jumbo frames in FTOS, 9216-byte jumbo frames in SFTOS
• Back-pressure support at half-duplex, IEEE 802.3x flow control at full duplex
• Extensive LED system with per-port LEDs
Ports
• 48 fixed 10/100/1000 Mbps auto-sensing and auto-MDIX RJ45 ports, up to 15.4W PoE each
• Four ports capable of using 10/100/1000 Base-T or 1000 Base-X using auto-media detect
• Console port (see Chapter
, Installing Ports, on page 41): Supplied with console cable (straight-through
Ethernet copper cable) and terminal adapter (DB-9 to RJ-45)
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