Enabling Scsi-Fcp Information Autodiscovery; Configuring The Default Fc4 Information For A Node - HP 5920 SERIES Fc And Fcoe Configuration Manual

FC4 information includes the following fields to describe the FC4-layer protocol supported by a node
and the feature of the supported protocol.
FC4-Type—FC4-layer protocol supported by a node, including SCSI-FCP, IP, SNMP, and NPV.
•
Feature—Feature of the supported FC4-layer protocol. Each FC4-layer protocol can include one of
•
the four Features and defines the meaning of each Feature.
Before communicating with other nodes, a node obtains information about all nodes that support
SCSI-FCP from the switch. You can use the display fc name-service database command to display the
FC4 information of nodes in the name service database.
When registering extended information:
A server registers SCSI-FCP for FC4-Type and Initiator for Feature.
•
A disk device registers SCSI-FCP for FC4-Type and Target for Feature.
•
As a result, servers can determine the disk devices to send access requests after obtaining information
about nodes supporting SCSI-FCP.

Enabling SCSI-FCP information autodiscovery

In some situations, for example, when a node logs out and then logs back in, the node does not register
SCSI-FCP support. Therefore, the node does not have a Feature value. This might cause communication
failure between the node and other nodes.
This feature enables the switch to automatically obtain SCSI-FCP support and the Feature value by
sending a PRLI packet to the node that is logging in. Then, the switch stores the SCSI-FCP information in
the name service database.
NOTE:
After this feature is enabled, nodes with older-model HBAs might not actively register name service
information with the switch.
To enable SCSI-FCP information autodiscovery:
Step
1. Enter system view.
2. Enter VSAN view.
3. Enable SCSI-FCP
information autodiscovery.

Configuring the default FC4 information for a node

The switch records the default FC4 information in the name service database for a node when the
following conditions exist:
• The node does not register FC4 information.
The switch fails to obtain SCSI-FCP information from the node.
•
The switch replaces the default FC4 information with the registered FC4 information or obtained
SCSI-FCP information when any of the following events occur:
A node registers FC4 information.
•
Command
system-view
vsan vsan-id
fc name-service auto-discovery
61
Remarks
N/A
N/A
By default, SCSI-FCP information
autodiscovery is enabled.