HP BladeSystem PC Blade Switch Installation Guide

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All internal Ethernet signals routed as Ethernet across individual CAT5e signal traces
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Five RJ-45 external Ethernet port connectors
Device Hardware Interfaces
RJ-45 Ports
RJ-45 ports are auto-sensing ports. When inserting a cable into an RJ-45 port, the switch automatically
ascertains the maximum speed (10 or 100 or 1000 Mbps) and duplex mode (half- or full-duplex) of the
attached device. All ports support only unshielded twisted-pair (UTP) cable terminated with an 8-pin
RJ-45 plug.
To simplify the procedure for attaching devices, all RJ-45 ports support Auto MDIX. This technology
allows attaching devices to the RJ-45 ports with either straight-through or crossover cables. When
inserting a cable into the switch’s RJ-45 port, the switch automatically:
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Senses whether the cable is a straight-through or crossover cable.
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Determines whether the link to the attached device requires a “normal” connection (such as when
connecting the port to a PC) or an “uplink” connection (such as when connecting the port to a router,
switch, or hub).
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Configures the RJ-45 port to enable communications with the attached device, without requiring
user intervention. In this way, the Auto MDIX technology compensates for setting uplink
connections, while eliminating concern about whether to use crossover or straight-through cables
when attaching devices.
SFP GBIC Module
The GBIC module bays accommodate standard SFP GBIC modules, allowing fiber connections on the
network. The GBIC port provides a link to a high-speed network or individual workstation at speeds of
up to 1000Mbps.
The module bay is a combo port, sharing a connection with an RJ-45 port.
Combo Port
Each Fast Ethernet external port on the back panel is connected to a SFP GBIC port as combo ports
which function as combo ports. Combo ports are single ports with two physical connections, SFP fiber
and RJ-45 copper with only one type of connection that can be active at any given time. If both devices
are plugged in, the two port that takes priority is defined through the CLI commands.
ENWW Device Hardware Interfaces 31