OmniSwitch OS6860/OS6900/OS10K Troubleshooting Guide Part No.032996-00 Rev.A
AOS Release 7.X and 8.X January 2015
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Table of Contents
1. About This Guide ............................................................................................................................................ 4
1.1. Supported Platforms .................................................................................................................................. 4
1.2. Who Should Read this Manual? ................................................................................................................ 4
1.3. When Should I Read this Manual? ............................................................................................................ 4
1.4. What is in this Manual? ............................................................................................................................. 4
1.5. What is Not in this Manual? ...................................................................................................................... 5
1.6. How is the Information Organized? ........................................................................................................... 5
1.7. Related Documentation.............................................................................................................................. 5
1.8. Before Calling Alcatel-Lucent’s Technical Assistance Center .................................................................. 6
2. Troubleshooting the Switch System .............................................................................................................. 8
2.1. Introduction................................................................................................................................................ 8
2.2. Troubleshooting the System on OS6900/OS10K Switches ....................................................................... 8
2.3. Troubleshooting System on OS6860/E Switches ...................................................................................... 9
2.4. Advanced Troubleshooting ...................................................................................................................... 12
2.5. Memory Leak ........................................................................................................................................... 14
2.6. Packet Driver ........................................................................................................................................... 14
2.7. The second column of output provides changes since the previous execution of the command.Logs .... 15
3. Troubleshooting Virtual Chassis ................................................................................................................. 16
3.1. Introduction.............................................................................................................................................. 16
3.2. Basic Troubleshooting ............................................................................................................................. 18
3.3. Advanced Troubleshooting ...................................................................................................................... 19
3.4. Scenarios : ................................................................................................................................................ 22
4. Troubleshooting Switched Ethernet Connectivity ..................................................................................... 27
4.1. Verify Physical Layer Connectivity......................................................................................................... 27
4.2. Verify Current Running Configuration .................................................................................................... 27
4.3. Verify Source Learning ........................................................................................................................... 28
4.4. Verify Switch Health ............................................................................................................................... 28
4.5. Verify ARP .............................................................................................................................................. 28
5. Troubleshooting Source Learning/Layer 2 Forwarding ........................................................................... 29
5.1. Basic Troubleshooting ............................................................................................................................. 29
5.2. Advanced Troubleshooting Scenarios ..................................................................................................... 31
MAC Addresses Not Aging Out ..................................................................................................................... 31
MAC Address Flapping .................................................................................................................................. 33
5.3. bShell Troubleshooting ............................................................................................................................ 34
6. Troubleshooting ARP ................................................................................................................................... 37
6.1. Basic Troubleshooting ............................................................................................................................. 37
6.2. Advanced ARP Troubleshooting ............................................................................................................. 39
7. Troubleshooting Spanning Tree .................................................................................................................. 42
7.1. Basic troubleshooting .............................................................................................................................. 42
7.2. Advanced Troubleshooting ...................................................................................................................... 44
8. Troubleshooting Link Aggregation ............................................................................................................. 48
8.1. Basic Troubleshooting ............................................................................................................................. 49
8.2. Advanced Troubleshooting ...................................................................................................................... 50
9. Troubleshooting BOOTP/DHCP/UDP Relay ............................................................................................. 53
9.1. Troubleshooting DHCP ........................................................................................................................... 53
9.2. Troubleshooting UDP Relay .................................................................................................................... 56
9.3. Basic troubleshooting .............................................................................................................................. 59
9.4. Advanced troubleshooting ....................................................................................................................... 61
9.5. Troubleshooting in Maintenance Shell .................................................................................................... 62
10. Troubleshooting QoS .................................................................................................................................. 63
10.1. Introduction ............................................................................................................................................ 63
10.2. Basic Troubleshooting ........................................................................................................................... 75
10.3. Advanced troubleshooting ..................................................................................................................... 76
10.4. Troubleshooting in the Maintenance Shell ............................................................................................ 79
10.5. Troubleshooting in bShell ...................................................................................................................... 79
11. Troubleshooting RIP .................................................................................................................................. 82
12. Troubleshooting OSPF ............................................................................................................................... 85
12.1. Supported debug variables ..................................................................................................................... 85
12.2. Planned and unplanned Virtual Chassis takeover .................................................................................. 85
12.3. Minimum working configuration ........................................................................................................... 87
12.4. Basic troubleshooting ............................................................................................................................ 87
12.5. Advanced troubleshooting ..................................................................................................................... 89
13. Troubleshooting BGP ................................................................................................................................. 93
13.1. BGP process ........................................................................................................................................... 93
13.2. Advance Troubleshooting ...................................................................................................................... 97
14. Troubleshooting IP Multicast Switching (IPMS) ..................................................................................... 99
14.1. Introduction ............................................................................................................................................ 99
14.2. Basic troubleshooting .......................................................................................................................... 106
14.3. Advanced troubleshooting ................................................................................................................... 109
14.4. Troubleshooting in the Maintenance Shell .......................................................................................... 110
14.5. Troubleshooting in bShell .................................................................................................................... 111
15. Troubleshooting IP Multicast Routing (IPMR) ..................................................................................... 113
15.1. Introduction .......................................................................................................................................... 113
15.2. Minimum working configuration ......................................................................................................... 113
15.3. Basic Troubleshooting ......................................................................................................................... 114
15.4. Advanced Troubleshooting .................................................................................................................. 115
15.5. Troubleshooting in bShell .................................................................................................................... 115
16. Troubleshooting 802.1X ........................................................................................................................... 116
17. Troubleshooting Universal Network Profiles (UNP) ............................................................................. 118
17.1. Troubleshooting in bShell .................................................................................................................... 118
18. Troubleshooting SNMP ............................................................................................................................ 120
18.1. Troubleshooting SNMP on OmniSwitch OS6900/OS10K/OS6860 series .......................................... 120
18.2. SNMP Security .................................................................................................................................... 124
18.3. SNMP Statistics ................................................................................................................................... 125
19. Troubleshooting Power Over Ethernet ................................................................................................... 127
19.1. Troubleshooting PoE on OmniSwitch on OS6860 and OS6860E ....................................................... 127
20. Troubleshooting Ethernet Ring Protection (ERP) ................................................................................. 130
20.1. Troubleshooting ERP on OmniSwitch ................................................................................................. 130
21. Troubleshooting Shortest Path Bridging (SPB) ..................................................................................... 136
21.1. Troubleshooting SPB on OmniSwitch OS6900/OS10K/OS6860 series ............................................. 136
21.2. SPB debug information ........................................................................................................................ 138
21.3. Advanced Troubleshooting Scenarios ................................................................................................. 139
21.4. bShell Troubleshooting ........................................................................................................................ 140
22. Troubleshooting sFlow ............................................................................................................................. 141
22.1. sFLOW Debug ..................................................................................................................................... 142
23. Troubleshooting Port Mirroring and Port Monitoring ......................................................................... 143
23.1. Troubleshooting Port Mirroring ........................................................................................................... 143
23.2. Troubleshooting port monitoring ......................................................................................................... 144
24. Troubleshooting IPV6 .............................................................................................................................. 146
24.1. IPv6 Routing ........................................................................................................................................ 146
24.2. Troubleshooting DHCPv6 Relay ......................................................................................................... 147
24.3. Troubleshooting a 6to4 Tunnel ............................................................................................................ 148
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