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Brsocade Adapters Troubleshooting Guide 33
53-1001253-01
Verifying Fibre Channel and CEE links
2
NOTE
Also verify LED operation on a switch port that is connected to an adapter port. Refer to the switch
Hardware Reference Manual to analyze LED meaning.
Common link problems can be caused by the following:
• Damaged cables. (Note that damaged cables can also cause errors and invalid data on links.)
• Cables that are not rated or compatible with adapter port speeds. Refer to cable specifications
in the Brocade Adapters Installation and Reference Manual.
• Faulty switch or adapter SFPs. Verify if an SFP is the problem by connecting a different link to
the adapter port or, if convenient, replace the cable with a cable of known quality. If the errors
or invalid data on the link still indicate a cable problem, the SFP may be faulty. Try replacing the
SFP.
• SFP issues on the adapter or switch. For example, the SFP may not be compatible with the
adapter, but is compatible with the switch, or vice versa. SCSI retries and timeouts determine
communication between the adapter and storage. Dropped packets cause timeouts, and
packets can drop because of SFP issues. Run the BCU port -stats command to display port
statistics, and look for errors and dropped frames.
Table 3 lists HCM options and BCU commands, as well as Fabric OS commands that you can use to
determine link status.
TABLE 3 Tools to determine link status
Application Tool References
HCM • Port Statistics
• Loopback and PCI loopback test
• Fibre Channel ping, echo, and trace route
tests
• Link Beaconing (HBAs only)
• Port Properties
• SFP information
Chapter 3, “Tools for Collecting
Data”
BCU
• fcdiag and diag commands.
• Port commands, such as port --stats. port
--list, and port --query.
Chapter 3, “Tools for Collecting
Data”
Switch Fabric OS
• switchShow
• portShow
• portStatsShow
• portErrShow
• fcpProbeShow
• fPortTest
• Chapter 3, “Tools for Collecting
Data”
• Fabric OS Administrator’s
Guide
• Fabric OS Troubleshooting and
Diagnostics Guide
- Brocade Adapters 1
- Document History 2
- Contents 3
- About this Document 9
- CNA support 10
- Fabric OS and switch support 10
- Host operating system support 10
- HBA support 11
- What’s new in this document 12
- Document conventions 13
- Notes, cautions, and warnings 14
- Key terms 14
- Notice to the reader 15
- Additional information 15
- Providing details for support 16
- Command Function 17
- Document feedback 18
- In this chapter 19
- Gathering problem information 20
- TABLE 1 Topology map details 21
- Isolating Problems 23
- How to use this chapter 24
- Isolate adapter problems 24
- General HBA and CNA problems 26
- Port link is not active 27
- • The agent is not running 30
- BCU version mismatch warning 33
- HBA problems 34
- UEFI boot problems 35
- • Reseat the adapter 36
- BIOS boot problems 37
- LUN not visible from host 38
- Configuration menu 38
- • nm-tool 40
- Poor network performance 45
- FCoE link is down 48
- CEE is not enabled 50
- Application Tool References 51
- Information Chapter 52
- Tools for Collecting Data 57
- Data to provide support 58
- Support Save 60
- Support Save differences 62
- • authUtil 63
- • cfgShow 63
- Adapter event messages 65
- Host system logs 66
- HCM logs 67
- Logging levels adjustment 68
- Port logging level 69
- Statistics 70
- CEE statistics (CNA only) 71
- CEE query (CNA only) 71
- FCoE statistics (CNA only) 74
- Fabric statistics 74
- IOC statistics 75
- Logical port statistics 76
- Port statistics 77
- Remote port statistics 77
- VLAN Statistics (CNA only) 79
- Diagnostics 80
- • Internal 81
- • External 81
- PCI loopback test 83
- Memory test 84
- Adapter temperature 84
- Ping end points 84
- Trace route 85
- Echo test 86
- SCSI test 86
- Collecting SFP data 87
- Collecting port data 88
- Authentication settings 91
- Persistent binding 93
- Performance optimization 95
- Solaris tuning 96
- Windows tuning 96
- Tuning network drivers 97
- Linux tuning 98
- VMware tuning 99
- 53-1001253-01 100
- Event Message Reference 101
- TABLE 9 Driver event messages 102
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