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ISR651101-00 G 6-1
6 Diagnostics and
Troubleshooting
Diagnostic information about the router is available through the chassis LEDs and
the port LEDs. Diagnostic information is also available through SANsurfer Router
Manager and CLI event logs and error displays. This chapter describes the
following types of diagnostics:
Chassis Diagnostics
“Power-On Self-Test Diagnostics” on page 6-2
“LED Blink Patterns” on page 6-2
This chapter also describes how to use maintenance mode to recover a disabled
router (see “Recovering a Router” on page 6-4).
Chassis Diagnostics
Figure 6-1 shows the chassis diagnostic LEDs, including the power LED and the
system fault LED.
Figure 6-1. Router Blade Diagnostic LEDs
Input Power LED is Off
The input power LED lights up to show that the router logic circuitry is receiving
proper voltages. If the input power LED is off, follow these steps:
MGMT IOIOI
FC1 FC2 GE1 GE1
GE4 GE3 iSR6240
Intelligent Storage Router
iSR6200 System
10GbE1 iSR6250
Intelligent Storage Router
10GbE2
Power LEDSystem Fault LEDHeartbeat LED