Replacing A T640 Standard Control Board Or T-Cb - Juniper T640 Hardware Manual

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Replacing a T640 Standard Control Board or T-CB

Copyright © 2013, Juniper Networks, Inc.
The command shuts down the Routing Engine cleanly, so its state information is
preserved. For more information about the command, see request system halt.
NOTE: The SIBs might continue forwarding traffic for approximately 5
minutes after the
On the console or other management device connected to the other Routing Engine,
4.
enter CLI operational mode and issue the following command.
user@host> request chassis cb offline slot n
n is 0 or 1 for the slot number of the host subsystem being taken offline.
Verify that the control board is offline:
5.
user@host> show chassis environment cb
T640 Preventing Electrostatic Discharge Damage on page 386
T640 Host Subsystem Description on page 32
Taking the T640 Host Subsystem Offline on page 256
Maintaining the T640 Host Subsystem on page 183
T640 Routing Engine Functions on page 6
T640 Routing Engine Interface Cable and Wire Specifications on page 448
T640 Preventing Electrostatic Discharge Damage on page 386
The router can have up to two control boards. You can use this procedure for either
standard control boards or T-CBs. They are located in the upper rear of the chassis in
the slots marked and
CB0
To replace a standard control board or T-CB, perform the following procedures:
Removing a T640 Standard Control Board or T-CB on page 260
1.
Installing a T640 Standard Control Board or T-CB on page 261
2.
Chapter 17: Replacing T640 Router Hardware Components
request system halt command has been issued.
. Each weighs approximately 5 lb (2.3 kg).
CB1
259