T640 Re-600 Description - Juniper T640 Hardware Manual

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Copyright © 2010, Juniper Networks, Inc.
The T640 router is shipped with the Junos OS preinstalled and ready to be configured
when the T640 router is powered on. There are three copies of the software: one on a
CompactFlash card in the Routing Engine, one on a rotating hard disk in the Routing
Engine, and one on a PC Card that can be inserted into the slot in the Routing Engine
faceplate.
You can install one or two Routing Engines in the router. The Routing Engines install into
the upper rear of the chassis in the slots labeled
a T-CB to be installed in the adjacent slot.
. A Routing Engine does not power up without a control board present in the adjacent
CB1
slot.
NOTE: If two Routing Engines are installed, they must both be the same
hardware model.
If two Routing Engines are installed, one functions as the master and the other acts as
the backup. If the master Routing Engine fails or is removed, and the backup is configured
appropriately, the backup takes over as the master. If the host system is redundant, the
backup Routing Engine is hot-removable and hot-insertable, but the master Routing
Engine is hot-pluggable. A Routing Engine that is not redundant requires that you power
down the router before replacement.
NOTE: For specific information about Routing Engine components (for
example, the amount of DRAM), issue the
command.
The ports for connecting the Routing Engine to external management devices are located
on the Connector Interface Panel (CIP). The CIP has three ports for each host subsystem:
10/100-Mbps Ethernet port for connecting to a management network
One asynchronous serial port for connecting to a console
One asynchronous serial port for connecting to a modem or other auxiliary device
Replacing a T640 Routing Engine on page 206
T640 Routing Engine Functions on page 8
Maintaining the T640 Routing Engines on page 148

T640 RE-600 Description

The RE-600 Routing Engine boots from the storage media in this order: the PC Card (if
present), then the CompactFlash card (if present), then the hard disk.
Chapter 3: T640 Router Hardware Component Overview
RE0 and RE1 . Each Routing Engine requires
installs below , and
RE0 CB0
show chassis routing-engine
installs above
RE1
33