Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 1083
Manual loopback test, In the example below, the manual loopback test is successful
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Task Command Mode Disable the automatic bring down of the single faulty SFM identified by the SFM walk during the RPM-SFM runtime loopback test. To re-enable the automatic bring down of an SFM, use the no dataplane-diag disable sfm-bringdown command. dataplane-diag disable sfm-bringdown CONFIGURATION Manual loopback test This manual dataplane loopback test is a supplemental test to the automatic runtime loopback test and can be initiated regardless if the runtime loopback test is enabled or disabled. Use this test to verify that the dataplane is actually functional even when a switch fabric status is down but there are at least (max-1) SFMs in active or diag failure state. Task Execute a manual dataplane loopback test: • all-loopback - Both the RPM and the line card dataplane loopback test is done. • rpm-loopback - Only the RPM dataplane loopback test is done. This test can be run when the switch fabric is in either an operational or a non-operational state. Command diag sfm [all-loopback | rpm-loopback] Mode EXEC If the RPM-SFM or line card-SFM loopback test detects an SFM failure, an attempt is made to isolate a single faulty SFM by automatically walking the SFMs. For this failure case, error messages similar to the runtime loopback test error are generated. Note: The dataplane runtime loopback configuration does not apply to this manual loopback test. In the example below, the manual loopback test is successful, and no SFM failure is detected. FTOS#diag sfm all-loopback Proceed with dataplane loopback test [confirm yes/no]:yes SFM loopback test completed successfully. FTOS# If the test passes when the switch fabric is down and there are at least (max-1) SFMs in the chassis, then the system will bring the switch fabric back up automatically. Like the runtime loopback test, the manual loopback test failure will not bring the switch fabric down. Note: Line card-SFM loopback test failure, during the manual test, will trigger an SFM walk. E-Series TeraScale Debugging and Diagnostics | 1083
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