- Alcatel Internetworking, Inc. Switch Troubleshooting Guide

OmniSwitch Troubleshooting Guide September 2005 xi
Chapter 19 Troubleshooting 802.1X .........................................................................................19-1
In This Chapter ..............................................................................................................19-1
Troubleshooting with the CLI .......................................................................................19-2
Troubleshooting Using Debug CLI ...............................................................................19-4
Dshell Troubleshooting .................................................................................................19-7
Appendix A OS6600/OS7700/OS8800 Architecture Overview ............................................ A-1
In This Chapter ...............................................................................................................A-1
The MAC ASIC ............................................................................................................. A-2
Catalina ....................................................................................................................A-2
Firenze .....................................................................................................................A-4
The Coronado ASIC ................................................................................................ A-5
Functional Description ............................................................................................ A-6
Coronado: The “Brain” of the System .............................................................. A-7
Coronado Specifications ...................................................................................A-7
Software Module Interaction ............................................................................ A-8
Queue Driver Interaction ................................................................................................ A-8
Ethernet Driver ........................................................................................................A-8
Queue Dispatcher .................................................................................................... A-8
NI Supervision ......................................................................................................... A-9
Source Learning ...................................................................................................... A-9
L3 Manager/IPMS ................................................................................................... A-9
QoS Manager ...........................................................................................................A-9
Destination MAC Learning .............................................................................. A-9
L3 Pseudo CAM Learning ................................................................................ A-9
QoS Policy Change ...........................................................................................A-9
QoS Policy Deleted ........................................................................................A-10
L2 destination MAC Aged/Deleted ................................................................A-10
L3 PseudoCAM Entry Aged/Deleted .............................................................A-10
Request to Free Queues Sent to QoS Manager ..............................................A-10
Link Goes Up/Down .......................................................................................A-10
Link Aggregation ......................................................................................................... A-11
Coronado Tables ..........................................................................................................A-11
Layer 2 Tables ....................................................................................................... A-11
Layer 3 Tables ....................................................................................................... A-11
Source Learning ........................................................................................................... A-12
Hardware Routing Engine (HRE) ................................................................................A-13
QoS/Policy Manager ....................................................................................................A-15
Coronado Egress Logic ................................................................................................ A-15
The Fabric Architecture ...............................................................................................A-16
Nantucket ASIC ...........................................................................................................A-17
Additional Nantucket Specifications ..................................................................... A-17
Functional Description: ..................................................................................A-18
Data Flow .......................................................................................................A-18