Cisco 7604 Configuration Manual page 954

DFC Layer 2 Forwarding Engine Tests
a packet lookup using the supervisor engine's Layer 2 forwarding engine. For DFC-enabled modules,
the diagnostic packet is sent from the supervisor engine's inband port through the switch fabric and
looped back from one of the DFC ports. The Trap feature is verified during the diagnostic packet lookup
by the Layer 2 forwarding engine.
Table A-18
Attribute
Disruptive/Nondisruptive
Recommendation
Default
Release
Corrective action
Hardware support
TestBadBpdu
The TestBadBpdu test verifies the ability to trap or redirect packets to the switch processor. This test
verifies that the Trap 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's Layer 2 forwarding engine. For DFC-enabled
modules, the diagnostic packet is sent from the supervisor engine's inband port through the switch fabric
and looped back from one of the DFC ports. The BPDU feature is verified during the diagnostic packet
lookup by the Layer 2 forwarding engine.
Table A-19
Attribute
Disruptive/Nondisruptive
Recommendation
Default
Release
Corrective action
Hardware support
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
A-12
TestTrap 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.
TestBadBpdu 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