Dell Emulex Family of Adapters User Manual

Page 1716

Boot Version 10.2 for NIC, iSCSI, FCoE, and RoCE Protocols User Manual

P010097-01B Rev. A

14. Troubleshooting

Troubleshooting for the iSCSI Protocol

1716

Unable to ping iSCSI target IP
address

• Check cable connections and make sure they are securely

connected at both ends. Make sure the link light is ON at both
ends of the cable.

• Verify that you have assigned a valid IP address with the

correct subnet mask to the interfaces that are connected to
the network.

• Check for duplicate IP addresses.
• Make sure you are connected to the correct port.
• If the IP address is coming from DHCP, check that the DHCP

server is up and available.

• Is the target on a different subnet? Check the default gateway

and make sure that the IP addresses of both the default
gateway and the remote host are correct.

• Check link status under Network Configuration. If you try

changing the initiator link status, you can back out one screen
then go back to Network Configuration to see a view of your
current link status.

• Check initiator IQN name and target IQN name. Verify that

they are properly specified.

• Check target's ACL settings (if any) to verify that the initiator's

IQN name is listed and can be recognized.

• Make sure that the target login parameters are compatible

with the initiator's.

• If this checklist confirms that initiator and target are

configured correctly and the issue persists, erase the
Controller Configuration. For more information, see “Erasing
the Current Configuration” on page 1609.

Check the jumbo frame settings on the iSCSI target. If enabled,
change the frame size to 1514 and retry. This isolates any issues
in the network related to jumbo frames. Jumbo frames, when
supported by the entire network, provide increased performance.

Note: OneConnect adapters support jumbo frames.

Table 14-2 Troubleshooting the iSCSISelect Utility (Continued)

Issue

Answer/Solution