Cisco 7604 Configuration Manual page 952

DFC Layer 2 Forwarding Engine Tests
Table A-14
Attribute
Disruptive/Nondisruptive
Recommendation
Default
Release
Corrective action
Hardware support
TestNewLearn
The TestNewLearn test verifies the Layer 2 source MAC address learning functionality of the Layer 2
forwarding engine. For supervisor engines, a diagnostic packet is sent from the supervisor engine inband
port to verify that the Layer 2 forwarding engine is learning the new source MAC address from the
diagnostic packet. For DFC-enabled modules, a diagnostic packet is sent from the supervisor engine
inband port through the switch fabric and looped backed from one of the ports on the DFC-enabled
module. The Layer 2 learning functionality is verified during the diagnostic packet lookup by the Layer
2 forwarding engine.
Table A-15
Attribute
Disruptive/Nondisruptive
Recommendation
Default
Release
Corrective action
Hardware support
TestIndexLearn
The TestIndexLearn test ensures that existing MAC address table entries can be updated. This test
verifies the Index Learn feature of the Layer 2 forwarding engine is working properly. When running the
test on the supervisor engine, the diagnostic packet is sent from the supervisor engine's inband port and
performs a packet lookup using the supervisor engine Layer 2 forwarding engine. For DFC-enabled
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
A-10
TestDontLearn Test Attributes
Description
Disruptive for looped back ports. Disruption is typically less
than one second. Duration of the disruption depends on the
configuration of the looped-back port (for example, Spanning
Tree Protocol).
Schedule during downtime.
This test runs by default during bootup or after a reset or OIR.
12.1(13)E, 12.2(14)SX.
None. See the system message guide for more information.
DFC-enabled modules.
TestNewLearn Test Attributes
Description
Disruptive for looped-back ports. Disruption is typically less
than one second. Duration of the disruption depends on the
configuration of the looped-back port (for example, Spanning
Tree Protocol).
This test runs by default during bootup or after a reset or OIR.
Off.
12.1(13)E, 12.2(14)SX.
None. See the system message guide for more information.
DFC-enabled modules.
Appendix A Online Diagnostic Tests
OL-4266-08