Document Outline

• Home
• Front Matter
  • Copyright Information
  • Patents
  • Contacting Alcatel
• Contents
• About This Guide
  • Supported Platforms
  • Who Should Read this Manual?
  • When Should I Read this Manual?
  • What is in this Manual?
  • What is Not in this Manual?
  • How is the Information Organized?
  • Related Documentation
  • Before Calling Alcatel’s Technical Assistance Center
• 1. Troubleshooting the Switch System
  • In This Chapter
  • Introduction
  • Troubleshooting System for OS-6624/6648 and OS-7/8XXX
  • Advanced Troubleshooting
  • Dshell Troubleshooting
    • Troubleshooting NIs on OmniSwitch 7700/7800/8800
    • OmniSwitch 6624/6648 Dshell Troubleshooting
      • Accessing Dshell on Idle Switches
  • Using AlcatelDebug.cfg
  • Troubleshooting IPC on OS-6/7/8XXX Series of Switches
    • Debugging IPC
    • OmniSwitch 6624/6648 Example
  • Port Numbering Conversion Overview
    • ifindex to gport
    • gport to ifindex
    • Converting from lport
      • OmniSwitch 7700/7800/8800 (Falcon/Eagle) Example
      • OmniSwitch 6624/6648 (Hawk) Example
• 2. Troubleshooting Switched Ethernet Connectivity
  • In This Chapter
  • Overview of Troubleshooting Approach
  • Verify Physical Layer Connectivity
  • Verify Current Running Configuration
  • Verify Source Learning
  • Verify Switch Health
  • Verify ARP
  • Using the Log File
    • Checking the 7700/7800 Nantucket Fabric
    • Checking the 7700/7800 Nantucket Fabric for Interrupts, Data Counts and Error Counts
    • Checking the Traffic Queue on the NI
    • Check for Catalina (MAC) or Port Lockup
• 3. Troubleshooting Source Learning
  • In This Chapter
  • Introduction
  • Troubleshooting a Source Learning Problem
  • Advanced Troubleshooting
  • Dshell Troubleshooting
    • OS-6600
• 4. Troubleshooting Spanning Tree
  • In This Chapter
  • Introduction
  • Troubleshooting Spanning Tree
  • Dshell
  • Generic Troubleshooting in Dshell
    • Event Trace (stpni_traceprint)
      • PORTATCH
      • PORTDELE
      • ADDVLAN
      • MODVLADM
      • MODVLSTP
      • ADDQTAG
      • DELQTAG
      • MDEFVLAN
      • PORTAGGR
      • PORTDISG
      • AGGR_UP
      • AGGRDOWN
      • PORTJOIN
      • PORTLEAV
      • BRGPARAM
      • PTSTPMOD
      • PORTMOD
      • PORTVLBK
      • PVLANBLK
      • GMBPDU
      • GMIGBPDU
      • GM2FIXED
      • VMADDVPA
      • VMDELVPA
      • VMDEFVPA
      • TOPOCHGT
      • LINK_UP
      • LINKDOWN
      • NI_UP
      • NI_DOWN
    • Physical and Logical Port Dumps
      • Logical Ports (stpni_debugLport)
      • Physical Port (stpni_debugPport)
      • Physical and Logical Port Trace Display (stpni_debugport)
    • Socket Handler Traces
      • stpNISock_globals
      • stpNISock_warningprint
      • stpNISock_traceprint
      • Inter-NI Trace (stpNISock_intraceprint)
      • Time-out Trace (stpNISock_totraceprint)
      • Board Up (stpNISock_boardupprint)
      • stpNISock_printon
      • StpNISock_printoff
    • CMM Spanning Tree Traces
      • Trace Menu
      • stpCMM_traceprint
  • Writing a PR for Spanning Tree
    • Exception in Spanning Tree (NI and CMM case)
    • Port Does Not Forward
    • Spanning Tree Unchanged When Port State Has Changed
    • Other Cases
• 5. Troubleshooting BOOTP/ DHCP/UDP Relay
  • In This Chapter
  • Starting the Troubleshooting Procedure
    • Use a Network Diagram
    • Use the OSI Model to Guide Your Troubleshooting
    • UDP Relay Configuration Problems
      • Incorrect Server IP Address
      • Forward Delay Timer
      • Displaying DHCP Statistics
    • UDP Relay and Group Mobility
  • Advanced Troubleshooting for UDP Relay
  • Dshell
• 6. Troubleshooting DNS
  • In This Chapter
  • Introduction
  • Troubleshooting a DNS Failure
    • Starting the Troubleshooting Procedure
    • Layer 7 DNS or Name Resolution Issue
  • DNS Configuration Considerations
• 7. Troubleshooting Link Aggregation
  • In This Chapter
  • Link Aggregation Limits and Guidelines
    • OmniSwitch 6624/6648 Restrictions
  • Troubleshooting a Link Aggregation Failure
    • Verify the Configuration
    • Source Learning
    • Link Aggregation Affecting Other Traffic
    • Problems Creating a Group
    • Problems Deleting a Group
    • LACP 802.3AD
  • Advanced Link Aggregation Troubleshooting
  • 6800 Link Aggregation Debug Functions
    • la_ni_agg_prt
    • la_ni_port_prt
    • la_ni_port_up_prt
    • la_ni_port_stats_prt
    • la_ni_info
    • lagg_ni_Sock_help
    • la_ni_trace_freeze
    • la_ni_trace_unfreeze
    • la_ni_kite_help
• 8. Troubleshooting 802.1Q
  • In This Chapter
  • Troubleshooting 802.1Q
    • Default VLAN Traffic
    • Tagged Packet on an Untagged Port
      • 802.1Q with VLAN ID of 0
      • 802.1Q and 64 Byte Packets
  • Advanced Troubleshooting
  • Dshell Commands
• 9. Troubleshooting Group Mobility
  • In This Chapter
  • Troubleshooting a VLAN Mobility Failure
    • Binding Rules
    • Port Rules
    • Precedence
  • Advanced Troubleshooting
  • Dshell
    • NI Debug Dshell
  • 6800 Group Mobility Troubleshooting
    • show vlan rules
    • gmHelp
    • gmcKiteDebug
    • gmcShowPorts
    • gmcShowRules
    • gmnKiteDebug
    • gmnKiteShowRules
    • gmnMacVlanShowBuffer
• 10. Troubleshooting QoS
  • In This Chapter
  • QoS Behavior
    • Default
    • QoS Queues and Ports
  • Troubleshooting QoS
    • Information Gathering on Symptoms and Recent Changes
    • Starting the Troubleshooting Procedure
    • QoS Activation
    • QoS Apply
    • Invalid Policies
    • Rules Order
    • Viewing QoS Settings
    • Viewing QoS Policy Rules
    • Validation
      • Example 1
      • Example 2
      • Example 3
    • Correction
    • Reflexive Rules
    • QoS Log
    • QoS Statistics
    • Debug QoS
    • Debug QoS Internal
    • OmniSwitch 6624/6648 Dshell Troubleshooting
      • qosIxHelp
      • qosDBState
      • QoS Dump
  • Example QoS Rules
• 11. Troubleshooting ARP
  • In This Chapter
  • ARP Protocol Failure
  • Common Error Conditions
  • Advanced ARP Troubleshooting
  • Dshell Troubleshooting
    • Viewing the ARP Table on OmniSwitch 6624/6648 Switches
• 12. Troubleshooting IP Routing
  • In This Chapter
  • Introduction
  • IP Routing Protocol Failure
  • Troubleshooting via the CLI
  • Troubleshooting with Debug CLI
  • RIP Troubleshooting
  • OSPF Troubleshooting
  • BGP Troubleshooting
  • Dshell Troubleshooting Advanced IP Routing
    • ipdbg=x
    • ifShow
    • iprmShowRoutes
    • iprmCountRoutes
    • ipni_ifShow
    • Iprm_routeShow
    • Ipni_routeCount
    • ospfDbgDumpEnv
• 13. Troubleshooting Virtual Router Redundancy Protocol (VRRP)
  • In This Chapter
  • Overview
  • Protocol Information
    • IP Field Descriptions
    • VRRP Field Descriptions
    • VRRP States
  • OmniSwitch 7700/7800/8800 Implementation
    • VRRP Security
    • OmniSwitch VRRP Limitations
  • CMM Failover
  • OmniSwitch VRRP Troubleshooting
  • ARP Table
  • Dshell Troubleshooting
• 14. Troubleshooting IP Multicast Switching (IPMS)
  • In This Chapter
  • Troubleshooting a Device that Cannot Join an IP Multicast Stream
  • Troubleshooting a Device that Drops Out of an IP Multicast Stream
  • Troubleshooting IPMS in Debug CLI
  • Dshell Troubleshooting
• 15. Troubleshooting DVMRP
  • In This Chapter
  • Introduction
  • DVMRP Troubleshooting
    • DVMRP Global and Interface Commands
    • DVMRP Debug Commands
• 16. Troubleshooting PIM-SM
  • In This Chapter
  • Introduction
  • Definition of Terms
  • Protocol Overview
    • DR Election
      • Simplified Hello Message Format
      • Debugging Hello Messages
      • Related CLI Command
  • BSR Election
    • Simplified Packet Format
    • Debugging BSR/Bootstrap
      • Election of a New BSR
      • Related CLI Command
  • C-RP Advertisements
    • Simplified RP-Advertisement Packet Format
    • Debugging C-RP-Adv
      • Related CLI Command
  • RP-SET
    • Simplified Bootstrap RP-SET Packet Taken on a 192.168.12/24 Network
    • Debugging RP-SET
      • On Non BSR You Should See
      • Related CLI Command
  • Join/Prune
    • Simplified Join Packet
    • Simplified PRUNE Packet
    • Debugging JOIN/PRUNE Event
  • Register
    • Simplified REGISTER Packet Format
  • Shared Tree
    • Related CLI Command
  • Source-Based Tree
    • Related CLI Command
  • Troubleshooting Examples: Limitations
    • Incorrect BSR ID
    • Multicast Group Status is Shown as Disabled
    • PIM-SM Limitations
    • Upstream Neighbor/Next Hop Debug Commands
• 17. Troubleshooting Server Load Balancing
  • In This Chapter
  • Introduction
  • Server Load Balance Failure
    • What is an SLB Failure?
    • Description of a Complete Failure of Service
    • Description of a Partial Failure of Service
  • Troubleshooting Commands
  • Troubleshooting a Complete Failure
  • Troubleshooting a Partial Failure
  • The Troubleshooting Procedure
• 18. Troubleshooting Authenticated VLANs
  • In This Chapter
  • Introduction
  • Troubleshooting AVLAN
    • DHCP Request Failure
    • Authentication Failure
    • Problem Communicating Using Multiple Protocols Simultaneously
    • Useful Notes on Client Issues
  • Troubleshooting Using Debug Systrace
    • Telnet Authentication and De-authentication
      • Get the IP Address from Default VLAN
      • Initiate the Telnet Authentication
      • Release/Renew IP
      • De-Authenticating
      • Release/Renew to Go Back to Default VLAN
    • HTTP/S Authentication
      • Start of Authentication using https://x.x.x.253
      • De-Authenticate using https://x.x.x.253
    • AVClient
      • AVClient Authentication Start
      • AVClient logout:
  • Dshell Troubleshooting
    • Authentication Dispatcher (AD) Debugging Help
    • The Authenticated VLAN adDebugShowContext Function
• 19. Troubleshooting 802.1X
  • In This Chapter
  • Troubleshooting with the CLI
  • Troubleshooting Using Debug CLI
  • Dshell Troubleshooting
• A. OS6600/OS7700/OS8800 Architecture Overview
  • In This Chapter
  • The MAC ASIC
    • Catalina
    • Firenze
    • The Coronado ASIC
    • Functional Description
      • Coronado: The “Brain” of the System
      • Coronado Specifications
      • Software Module Interaction
  • Queue Driver Interaction
    • Ethernet Driver
    • Queue Dispatcher
    • NI Supervision
    • Source Learning
    • L3 Manager/IPMS
    • QoS Manager
      • Destination MAC Learning
      • L3 Pseudo CAM Learning
      • QoS Policy Change
      • QoS Policy Deleted
      • L2 destination MAC Aged/Deleted
      • L3 PseudoCAM Entry Aged/Deleted
      • Request to Free Queues Sent to QoS Manager
      • Link Goes Up/Down
  • Link Aggregation
  • Coronado Tables
    • Layer 2 Tables
    • Layer 3 Tables
  • Source Learning
  • Hardware Routing Engine (HRE)
  • QoS/Policy Manager
  • Coronado Egress Logic
  • The Fabric Architecture
  • Nantucket ASIC
    • Additional Nantucket Specifications
      • Functional Description:
      • Data Flow
    • Calendar Manager Module
    • Data Port Output Module
    • Nantucket Redundancy
  • Roma
    • Functional Description
      • Initialization
      • NI Slot Insertion
      • Setup Calendars and Flow Control for New NI
      • NI Slot Extraction
    • CMM Takeover and Hot Swap
    • Framing Error
  • Chassis Management Module (CMM)
    • OS7000 CMM
    • OS8800 CMM
    • Functional Description of CMM
      • CMM Software Startup Process
      • AOS
      • MiniBoot
      • AOS Start
    • Chassis Manager Component of System Services
    • CMM Reload of NI Module
    • Overall System Architecture
  • Packet Walk
    • Packet Walk Principles
    • Data Flow Overview
  • Specific Packet Flows
    • Unknown L2 Source, Known L2 Destination
      • The Catalina ASIC
      • The Coronado ASIC
      • The Nantucket ASIC
      • The Coronado ASIC
      • The Catalina ASIC
  • Unknown Destination
    • Known L2 Source, Unknown L2 Destination
      • The Catalina ASIC
      • The Coronado ASIC
      • The Nantucket ASIC
      • The Coronado ASIC
      • The Catalina ASIC
    • Traffic is Being Passed; the Switch is Attempting to Put a Correct L2 DA Entry on the NI
      • The Coronado ASIC
    • Unknown L3 DA
      • The Coronado ASIC
  • Hardware Buses on OmniSwitch 7700/7800/ 8800 Switches
    • Xybus
    • Fbus
    • Bbus
  • Bus Mapping on OmniSwitch 7700/7800/8800 Switches
    • Xybus Mapping
    • Fbus Mapping
      • Falcon (OmniSwitch 7700/7800) Fbus Mapping
      • Eagle (OmniSwitch 8800) Fbus Mapping
  • OS6624/6648 Architecture
    • Hardware Architectural Overview
    • Layer 2 Forwarding
      • Address Resolution Protocol
      • Address Learning
      • Location of Address Tables
      • Address Look-up Methodology
      • L2 Data Structures
      • 3-Protocol Entry
    • Layer 3 Forwarding
    • VLANs
      • Port Based VLANs
      • Protocol Based VLANs
      • Address Based VLANs
      • Tag Net ID Entry
      • Priority
      • 802.1p Priority
      • Rules-Based Priority
      • QOS Flow
      • Bandwidth Management and QoS
  • CMM Functionality for OS6600
  • OS6600 IPC Communication
  • OS6600 BOOT Sequence
• B. Debug Commands
• C. Technical Support Commands
• D. Modifying Files with VI Editor
  • In This Chapter
  • Useful VI Commands
  • Sample VI Session
• Index