Checking the simple name server (sns), Checking, The simple name server (sns) – HP StorageWorks 2.128 SAN Director Switch User Manual

Page 147

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Fabric OS 5.x administrator guide 147

Checking the Simple Name Server (SNS)

Issue the

nsShow

command on the switch to which the device is attached.

For example:

Look for the device in the SNS list, which lists the nodes connected to that switch, allowing you to

determine whether a particular node is accessible on the network.
• If the device is not present in the SNS list, the problem is between the storage device and the

switch. There might be a timeout communication problem between edge devices and the SNS, or

there might be a login issue. First check the edge device documentation to determine whether there

is a timeout setting or parameter that can be reconfigured. Check the port log for NS registration

information and FCP probing failures (using the

fcpProbeShow

command). If these queries do

not help solve the problem, contact the support organization for the product that appears to be

inaccessible.

• If the device

listed in the SNS list, the problem is between the storage device and the host.

There might be a zoning mismatch or a host/storage issue. Proceed to

Issue the

portLoginShow

command to check the port login status.

Issue the

fcpProbeShow

command to display the FCP probing information for the devices attached

to the specified F_Port or FL_Port.
This information includes the number of successful logins and SCSI INQUIRY commands sent over this

port and a list of the attached devices.

Check the port log to determine whether the device sent the Fabric Login (FLOGI) frame to the switch,

and the switch probed the device.

The Local Name Server has 9 entries {

Type Pid COS PortName NodeName TTL(sec)

*N 021a00; 2,3;20:00:00:e0:69:f0:07:c6;10:00:00:e0:69:f0:07:c6; 895

Fabric Port Name: 20:0a:00:60:69:10:8d:fd

NL 051edc; 3;21:00:00:20:37:d9:77:96;20:00:00:20:37:d9:77:96; na