Alcatel Carrier Internetworking Solutions 6648 - Manual (Page 11)

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