DescriptionFeature
The in-system Routing Engine can support any new Routing Engine that conforms to
the standard modular Routing Engine I/O interface and form factor.
NOTE: When a Routing Engine is not installed in the SCBE2-MX, you need to cover the
empty slot with a blank panel.
In-system removable
Routing Engine
The SCBE2-MX and associated Routing Engine assembly are hot-swappable and do not
require downtime to replace. The system software provides a mechanism to shut down,
or acquiesce the Routing Engine/SCBE2-MX. The system software also provides a
method to reset or reboot the Routing Engine/SCBE2-MX. This support is provided via
CLI commands, and various hardware support circuits.
NOTE: The Routing Engine must be brought offline prior to removal to avoid possible
corruption of the hard drive.
Hot-Swappable
With three SCBE2-MX’s installed, the MX960 router provides 2 + 1 redundancy. With
two SCBE2-MX’s installed, the MX240 router and MX480 router provide 1 + 1
redundancy.
Redundancy
Provides a 1 Gbps Ethernet link between the Routing Engines.1000Base-T Ethernet
Controller
Allows you to upgrade programmable parts and reboot with “hitless” operation if the
redundant SCBE2-MX’s are inserted in the system and are operational.
Hitless Operation
SCBE2-MX Components
DescriptionComponent
Indicate the status of the SCBE2-MX. See Table 73 on page 160.OK/FAIL, FABRIC-ACTIVE,
FABRIC-ONLY LEDs
Two Ethernet ports, labeled XGE, provide 10 GbE/1 GbE SFP+ interfaces. These
ports also are connected to the Ethernet control switch which limits the traffic
for the 10 GbE port and provides security to prevent unwanted access to the
control plane via the external ports.
XGE ports
Two LINK LEDs indicate the status of the XGE ports. See Table 73 on page 160.XGE port LEDs
The RJ-45 external clock interface port, labeled EXT CLK, receives GPS and PPS
timing from the GPS external interface.
EXT CLKport
159
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