Juniper JUNOS, Руководство по эксплуатации сети

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Monitoring the SCB Status
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Chapter 30: Monitoring the SCB
The SCB occupies the center slot of the card cage, and is installed into the
backplane from the front of the chassis (see Figure 161).
Figure 161: M40 Router SCB Location
The SCB is field-replaceable and hot-pluggable. You can remove and replace it
without powering down the system; however, this causes major impact to the
system. While the SCB is out of the router, route lookups, system component
monitoring, exception and control packet transfer, and FPC operation and reset
control cannot occur.
When you replace the SCB, it is rebooted by flash EEPROM.
Monitoring the SCB Status
If the SCB fails, no information about chassis components is available through the
JUNOS software command-line interface (CLI).
Steps To Take
To monitor the SCB status, follow these steps:
1. Display the SCB Environmental Status on page 396
2. Display the SCB Detailed Status on page 396
3. Check the SCB LED Status on page 397
System
Control Board
1783
R