Redback Networks SmartEdge 100, Руководство по оборудованию

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System Components
System Description 1-5
Table 1-2 lists the specifications for the circuit board.
I/O Carrier Card Functions and Components
The I/O carrier card is a logical subdivision of the circuit board within the chassis and implements the
features and functions of a traffic card. Like the traffic cards, the I/O carrier card includes dual packet
processing ASICs, Version 2 (PPA2s). These PPA2s, one for ingress traffic and one for egress traffic,
process all data passing through the SmartEdge 100 router, offloading the processors that perform the
controller functions. Each PPA2 is implemented with 1 GB of memory.
Unlike previous Redback traffic cards, the I/O carrier card supports both fixed and removable ports with
multiple speeds:
• Ports 1 and 2 are fixed; they are referred to as native ports and have their port connectors on the chassis
front panel. Both ports support either copper or optical connections and run at 1 Gbps. Specifications
for native ports are provided in Chapter 2, “MIC and Native Port Descriptions.”
• Ports 3 to 26 are implemented on a pair of removable boards referred to as media interface cards
(MICs). The MICs plug into the I/O carrier card through the front panel with a selectable speed of 10
or 100 Mbps or with a speed of 1 Gbps.
The number of available ports depends on the installed MICs (see Table 1-3). Ports 3 to 14 are allocated
to the MIC in the left MIC slot; ports 15 to 26 are allocated to the MIC in the right MIC slot. Any MIC
can be installed in either slot.
MIC Functions and Components
MICs allow you to install a variety of Ethernet port types in either of two MIC slots in the chassis front
panel. You can install any combination of MIC types; if only a single MIC is installed, a MIC slot cover is
installed to maintain air flow. Table 1-3 lists the MICs supported on the SmartEdge 100 router; for more
information about MICs, see Chapter 2, “MIC and Native Port Descriptions.”
Table 1-2 Circuit Board Specifications
Specification Value
Control processor • SmartEdge OS software
• NetOp EMS software
Internal slots Two slots for Type I CF cards:
• System images and files
• Low-level software
External slot One slot for Type I CF card—Crash dumps, external software load
Table 1-3 SmartEdge 100 MICs
Type of MIC/Description
Number
of MICs Number of
MIC Ports
1
Protection Ratios
Ethernet
Copper FE 2 12 None
Optical FE
2
2 12 None