Ericsson Redback Networks SmartEdge 1200, Руководство по оборудованию

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System Overview
1-2 SmartEdge 1200 Router Hardware Guide
Router Versions
The SmartEdge 1200 router has two versions: standard and NEBS-compliant (NEBS Level 3). These two
versions are distinguished by the type of air ramp that is integrated into the chassis.
Unlike SmartEdge 800 routers, which require separate air ramps installed above and below the chassis for
directing hot air away from the chassis, the air ramp integrated into a SmartEdge 1200 chassis replaces the
air ramp that would otherwise be installed above the chassis.
Both versions of the SmartEdge 1200 router use the same chassis, but each version has a different integrated
air ramp. The NEBS-compliant router uses a NEBS-compliant air ramp; the standard version uses a
standard integrated air ramp. In all other respects, the two versions of the SmartEdge 1200 router are
identical.
Because the integrated air ramp cannot be removed from the chassis, the chassis itself is referred to as being
a NEBS-compliant chassis or a standard chassis. However, to complete the installation, when a
SmartEdge 1200 router is installed at the bottom of a rack, a removable NEBS-compliant air ramp is
required for the NEBS-compliant version of the router; a standard removable air ramp is required for the
standard version of the SmartEdge 1200 router.
Table 1-1 lists the product codes for the two types of SmartEdge 1200 chassis. The product codes identify
the type of air ramp that is integrated into the chassis.
Note In the descriptions that follow, the term, controller card, refers to any version of the
Cross-Connect Route Processor (XCRP) Controller card (XCRP, XCRP3, XCRP4), unless
otherwise noted.
The term, Gigabit Ethernet, applies to any Ethernet traffic card that supports a port speed of
1 Gbps or greater; unless explicitly stated, the speed of any Gigabit Ethernet port is 1 Gbps.
Note
In the descriptions that follow, the term SmartEdge 1200 applies to either version of the router,
unless otherwise noted. The terms SmartEdge 1200n and SmartEdge 1200s refer to the
NEBS-compliant and the standard versions of the router, respectively. Throughout this guide,
figures for the SmartEdge 1200 router illustrate the SmartEdge 1200n router, unless otherwise
noted.
NEBS-compliance standards are listed in Table 3-1 in the “Agency Compliance Information”
section on page 3-2.
Table 1-1 SmartEdge 1200 Chassis Types
Chassis
Product
Code
Description
SmartEdge 1200n D9 SmartEdge 1200 chassis with NEBS-compliant air ramp.
SmartEdge 1200s D7 SmartEdge 1200 chassis with standard (non-NEBS compliant) air ramp.