Command Line Reference Guide

1408 | E-Series ExaScale Debugging and Diagnostics
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Important Points to Remember
• Unless otherwise noted, these commands are available on TeraScale systems only.
• The trace-log file captures failure information on most failure events.
• The RPM-SFM runtime loopback test failure initiates an SFM walk. The system automatically
places each SFM (in sequential order) in an offline state, runs the loopback test, and then places
the SFM back in an active state. This continues until the system determines a working SFM
combination. If no working combination is found, the system restores to the pre-walking SFM
state
• If the line card runtime loopback test fails, the system does not launch an SFM walk.
dataplane-diag disable loopback
e
x
Disable the runtime loopback test on the primary RPM and line cards.
Syntax
dataplane-diag disable loopback
To re-enable, use the no dataplane-diag disable loopback command.
Defaults
Enabled
Command Modes
CONFIGURATION
Command
History
Related
Commands
Usage
Information
The runtime dataplane loopback test, by default, runs in the background. Every 10 seconds, the
primary RPM and each line card sends packets through the SFMs and back again (loopback) to
monitor the overall health status of the dataplane at a system level. This command disables that
automatic runtime loopback test. Execute the show diag sfm command to view the diagnostics
results.
Example FTOS#show diag sfm
Switch Fabric Module Loopback Test: enabled
SFM Walk-Through in Loopback Test: enabled
SFM Bring-Down in Loopback Test: enabled
Switch Fabric Module Loopback State: on
-- Route Processor Modules --
Slot Test Status Last Result Time Stamp
------------------------------------------------------
0 off none
1 on pass Feb 16 2007 15:50:26
Note: SFM walking assumes a chassis with the maximum number of SFMs in an active state.
Version 8.1.1.2 Introduced on E-Series ExaScale E600i
Version 8.1.1.0 Introduced on E-Series ExaScale E1200i
show diag sfm Display the loopback test results
Note: Only the Primary RPM can perform runtime dataplane loopback test.