Technical data

Fabric OS Administrator’s Guide 10-7

Publication Number: 53-0000518-09

Analyzing Connection Problems

To check the Simple Name Server (SNS)

1. Enter the nsShow command on the switch to which the device is attached:

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

determine if a particular node is accessible on the network.

• If the device is not present in the SNS, the problem is between the storage device and the

switch. There might be a timeout communication problem between edge devices and the Name

Server, or there might be a login issue. First check the edge device documentation to determine

if there is a timeout setting or parameter that can be reconfigured. You should also 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 is listed in the SNS, the problem is between the storage device and the host. There

might be a zoning mismatch or a host/storage issue. Proceed to “To check for zoning

problems” on page 10-8.

3. Enter the portLoginShow command to check the port login status.

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