Resetting Line Modules And Srp Modules; Double-Bit Errors On Srp Modules; Detecting Double-Bit Errors - Juniper ERX-1410 Installation And User Manual

Resetting Line Modules and SRP Modules

Double-Bit Errors on SRP Modules

Detecting Double-Bit Errors

Two recessed buttons on line modules and SRP modules provide the
mechanisms for resetting. You can use the NMI button to reset the
software on the module and the board reset button to reset the module.
See Figure 1-8 and Figure
If a line module fails to respond for an extended period of time, there may
be a software problem with that module. You can depress the software
reset button with a paper clip to suspend the current software task.
Depending on the situation, this action may also reset the software on the
module.
If depressing the software reset button fails to correct the issue with the
line module, depress the board reset button. This action reboots the line
module.
The buttons work in the same way for the SRP module. Depressing the
board reset button on an SRP module is equivalent to rebooting the ERX
system and causes all the line modules to reboot.
SRP modules include error checking and correction (ECC) to protect
their SDRAM. ECC provides error detection of single-bit and double-bit
errors and correction of single-bit errors for the SDRAM as follows:
• If ECC detects a single-bit error, it automatically corrects the error,
and operation continues.
• If ECC detects a double-bit error, it logs the error, stops the main
processor on the controller, and takes the SRP module offline.
The following message appears on the console if ECC detects a
double-bit error:
ALERT 05/10/2000 13:10:33 os: failed: ECC DOUBLE BIT ERROR
OCCURRED
Address = 0xe95db10
Data (Upper 32Bits) = 0xe95db20
Data (Lower 32Bits) = 0x55d06c
ECC Data Bits =
ECC 1Bit Error Counter =
*** YOU MUST PERFORM A HARD RESET TO CONTINUE ***
ALERT 05/10/2000 13:10:34 os: PROCESSOR EXCEPTION: 0x200n
Resetting Line Modules and SRP Modules
1-9.
0x2b
0x0
8-11
ERX Edge Routers