Juniper EX9214 Hardware Manual page 85

EX9200-SF3 Components and Features
Component/Feature
XGE ports
GPS port
External clock interface
Centralized Stratum3E
clock module
In-system removable
Routing Engine
Hot-swappable
System upgrade
capabilities
Description
Two Ethernet ports provide 10GbE and 1GbE SFP+ interfaces. These ports also are
connected to the Ethernet control switch, which limits the traffic for the 10GbE port
and provides security to prevent unwanted access to the control plane through the
external ports.
One RJ-45 GPS external clock interface port receives GPS and PPS timing from the
GPS external interface. A red LED indicates there is no clock present or the clock is
not OK. A green LED indicates the clock interface is active and OK. If the LED is off,
the clock interface is not enabled.
The external clock interface is on the EX9200-SF3 front panel. The clock source
interface receives GPS and PPS timing from the GPS external interface.
The clock module performs clock monitoring, filtering, and holdover on the
centralized fabric card. This centralized clocking architecture also provides clock
cleanup and distribution.
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 EX9200-SF3, you need to
cover the empty slot with a blank panel.
The EX9200-SF3 and associated Routing Engine assembly are hot-swappable. The
system software provides a mechanism to shut down the Routing Engine/EX9200-
SF3. The system software also provides a method to reset or reboot the Routing
Engine/EX9200-SF3. This support is provided through CLI commands and various
hardware support circuits.
NOTE: Before removing the module, you must bring the Routing Engine offline to
avoid corrupting the hard drive.
Upgrading to an EX9200-SF3
See for details.
74