Online diagnostics are used to run
tests to monitor the health of the system.
The FabricUcastMcast diagnostic test
combines FabricDiagnosisTest and FabricMcastTest, and replaces them as the
default test enabled to monitor health of the device. FabricDiagnosisTest is a
unicast test and FabricMcastTest is a multicast test. The FabricDiagnosisTest
and FabricMcastTest are available but are not turned on by default.
The default interval for invoking FabricUcastMcastTest as part of the
health monitoring is set to 1 min. By default, the FabricUcastMcastTest is
enabled on the DSC standby RP. If the standby RP is not available the test runs
from the active RP.
FabricUcastMcastTest includes the automatic plane disabling (APD)
feature in which a request is made to take the faulty fabric plane
out-of-service. The APD rules for making the plane out-of-service (OOS) request
by the online-diags require either one of the following to be true for the
The request to take a faulty fabric plane OOS applies when the fabric
capacity threshold is met. The default threshold setting is 7. The fabric
capacity threshold can be configured using the command:
50% or more (and at least 3)
nodes failed to respond to the ping test.
100% (and at least 2) nodes of a given fabric group failed to
respond to the ping test. The test enforces 0% tolerance for ping packet loss
RP/0/RP0/CPU0:router(admin-config)#controllers fabric capacity threshold <2-8>
The threshold parameter is in the range 2 to 8.
The FabSRCC diagnostic test was
introduced on the Cisco CRS-3 line cards. This test supports CRS-3 nodes that
send and receive statically routed control cells (SRCC).
Use the following commands:
diagnostic start location <location> test FabSRCCTest
Use this command to start the SRCC test. The <location>
parameter is one of the nodes in the Run state that supports SRCC
diagnostic monitor <location> test FabSRCCTest
By default the FabSRCC test is run on demand, but can be
configured to run using this command.
no diagnostic monitor <location> test FabSRCCTest
Use this command to stop the SRCC test.
diagnostic monitor interval <location> test FabSRCCTest number-of-days hour:minutes:seconds. milliseconds
Use this command to configure the interval to run the SRCC test.
The default interval is 2 minutes.