User manual

Publication 1783-UM003D-EN-E - December 2009 15
Chapter 1
Hardware Features
These features are common to both the Stratix 8000 and Stratix 8300 switches.
See the figures on pages 13…14
for an illustration of these features.
Feature Description
Power and relay connector You connect the DC power and alarm signals to the switch through two front panel
connectors. One connector provides primary DC power (supply A) and the major
alarm signal, and a second connector (supply B) provides secondary power and the
minor alarm signal. The two connectors are physically identical and are in the upper
left side of the front panel.
The switch can operate with a single power source or with dual power sources.
When both power sources are operational, the switch draws power from the DC
source with the higher voltage. If one of the two power sources fail, the other
continues to power the switch.
The power and relay connectors also provide an interface for two independent
alarm relays: the major alarm and the minor alarm. The relays can be activated for
environmental, power supply, and port status alarm conditions and can be
configured to indicate an alarm with either open or closed contacts. The relay itself
is normally open, so under power failure conditions, the contacts are open. From
the Command Line Interface (CLI), you can associate any alarm condition with one
alarm relay or with both relays.
Console port For configuring, monitoring, and managing the switch, you can connect a switch to
a computer through the console port and the supplied RJ45-to-DB-9 adapter cable.
If you want to connect a switch to a terminal, you need to provide an RJ45-to-DB-25
female DTE adapter.
Dual-purpose uplink ports The two dual-purpose uplink ports may each be configured for RJ45 (copper) or SFP
(fiber) media types. Only one of these connections in each of the dual-purpose ports
can be active at a time. If both ports are connected, the SFP module port has
priority.
You can set the copper RJ45 ports to operate at 10, 100, or 1000 Mbps in
full-duplex or half-duplex mode. You can configure them as fixed 10, 100, or 1000
Mbps (Gigabit) Ethernet ports and can configure the duplex setting.
You can use approved Gigabit (or 100 Mbps) Ethernet SFP modules to establish
fiber-optic connections to other switches. These transceiver modules are
field-replaceable, providing the uplink interfaces when inserted in an SFP module
slot. You use fiber-optic cables with LC connectors to connect to a fiber-optic SFP
module. These ports operate in the full-duplex mode only.
10/100 ports You can set the 10/100 ports to operate at 10 or 100 MbpsMbps in full-duplex or
half-duplex mode. You can also set these ports for speed and duplex
autonegotiation in compliance with IEEE 802.3-2002. (The default setting is
autonegotiate.)
When set for autonegotiation, the port senses the speed and duplex settings of the
attached device. If the connected device also supports autonegotiation, the switch
port negotiates the best connection (that is, the fastest line speed that both devices
support and full-duplex transmission if the attached device supports it) and
configures itself accordingly. In all cases, the attached device must be within 100 m
(328 ft) of the switch.