Hitachi GR2000 Series - Manual (Page 271)

Maintenance Procedure
GR2K-GA-0015 8-9
Ver. 07-02
8.3 Swapping of Boards in Failure
8.3.1 Hot-Swapping of Boards in Failure while Power is On
This section explains procedures to follow when failure occurs in the BCU (including
the CPU fan), the RP, and the NIF, and board swapping is necessary while the router
is powered and operating. See the explanation below corresponding to the board for
replacement. For information on the exact position of each board, see the GR2000
Installation Guide. The board for models GR2000-1B and GR2000-2B cannot be
exchanged while the power supply is turned on. The RP board for model GR2000-4S
cannot be exchanged while the power supply is turned on. For the correct board
exchange procedure for models GR2000-1B, GR2000-2B, GR2000-2B+, GR2000-BH
and GR2000-4S refer to “Section 8.3.2, “Swapping of Boards in Failure While Power
is Off” on page 8-18.
(1) Hot-Swapping of Standby BCU and Standby CPU Fan
Figure 8-8 summarizes the procedures for swapping the standby BCU and the
standby CPU fan while the router is powered and operating. Steps 1 through 5 are
described in more detail following Figure 8-8.
Figure 8-8 Steps for Hot-Swapping of Standby BCU and Standby CPU Fan
Step 1
Step 2
Step 3
Step 4
Step 5
Configure-off the standby BCU by entering close
standby command from the active side.
Remove the standby BCU.
Install a new standby BCU. (If necessary, this step includes
replacement of the standby CPU fan with a new one.
Register the CPU fan swap date and restart the new
standby BCU.
Configure-on the new standby BCU by entering free
standby command from the active side.