Reference Guide

E-Series Debugging and Diagnostics | 1537
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 (see Figure 65-1).
Example
Figure 65-1. show diag sfm Command Example
dataplane-diag disable sfm-bringdown
e
Disable the automatic bring down of the single faulty SFM identified by the SFM walk during the
RPM-SFM runtime loopback test.
Syntax
dataplane-diag disable sfm-bringdown
To re-enable the automatic SFM bring down, use the no dataplane-diag disable sfm-bringdown
command.
Defaults
Enabled
Command Modes
CONFIGURATION
Command
History
Usage
Information
If a full set of SFMs are online during the runtime loopback test and a failure occurs, an automatic
SFM walk is launched in an attempt to determine if the failure is due to a single faulty SFM. If
confirmed, the single faulty SFM is identified and disabled by default. This command disables the
automatic bring down of that suspect SFM.
Related
Commands
Note: Only the Primary RPM can perform runtime dataplane loopback test.
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
-- Line cards --
Slot Test Status Last Result Time Stamp
------------------------------------------------------
0 off none
1 off none
2 on pass Feb 16 2007 15:50:26
3 off none
4 on pass Feb 16 2007 15:50:26
5 off none
6 off none
FTOS#
Version 6.5.4.0 Introduced
dataplane-diag disable loopback Disable the runtime dataplane loopback test