Brocade Communications Systems BR-1020 Guía para resolver problemas Pagina 43
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Brsocade Adapters Troubleshooting Guide 25
53-1001253-01
Ethernet network interface problems (CNA only)
2
6. Reboot the host system.
Ping to remote server is failing
Pings generated between servers are failing.
1. Possible Cause: Ethernet interface on either server is in the following states:
• Administratively down. Running the Linux or VMware ifconfig command shows that the UP
flag is not set.
• Administratively up, but link is down. Running the Linux or VMware ifconfig command
shows that the RUNNING flag is not set.
Action: To determine link state, run the ifconfig command for Linux or VMware systems. For
Windows systems, run ipconfig /all or use Settings > Network Connections.
Action: For the interface to send and receive packets, both the UP and RUNNING flag must be
set.
Action: If pinging a server on a different network. make sure that the route to that host network
or that the default gateway is correctly configured.
2. Possible Cause: Other link problems.
Action: Refer to “Port link is not active” on page 9.
3. Possible Cause: IP address and network mask of CNA port are set incorrectly.
Action: Verify and set IP address and network mask if necessary:
• Linux - Run the ifconfig command to determine if port has proper IP address and network
mask and to verify that the link is up.
• Windows - Use Device Manager and network connection tools.
4. Possible Cause: Packets are not being received or stack is dropping packets at remote server
due to incorrect IP address set on adapter or incorrect MTU size.
Action: Verify if packets arrived at the remote server using the following commands:
• Linux - Run the tcpdump command.
• Windows - Run the Wireshark application.
Action: Verify MTU size on your system and increase size if necessary. Note that MTU size set
on adapter must not be more than MTU size set on attached FCoE switch. To set MTU size on
the adapter, refer to the “Adapter Configuration” chapter in the Brocade Adapters Installation
and Reference Manual.
Action: Verify and set IP address and network mask if necessary:
• Linux - Run the ifconfig command to determine if port has proper IP address and network
mask and to verify that the link is up.
• Windows - Use Device Manager and network connection tools.
- 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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