IMPORTANT: One way to determine what is happening is to look at the log messages during discovery and getting element details. See ”Viewing Log Messages” on page 52 for more information.

No Stitching for Brocade Switches with Firmware 3.2.0

Stitching does not appear for hosts attached to Brocade switches running firmware 3.2.0. There is no stitching when the PID format is 0. The port setting must be the same for all Brocade switches in the fabric or the fabric will become segmented. The PID format should be set to 1 for all Brocade switches running firmware later than 2.6.0 and 3.0. The PID=0 setting is a legacy Port ID format that does not support the numbers of ports beyond 16.

Link Between a Brocade Switch and a Host

Disappears from the Topology

If a link that used to work between a Brocade switch and a host disappears from the topology, you may need to rediscover the Brocade switch and the host. Also, confirm that both are online and there are no network connection issues. As a last resort, you may need to reboot the switch. In some instances, the API of the Brocade switch has been known to hang. Rebooting the switch clears the switch of the API hang.

Incorrect Topology Sometimes Displayed for CNT Switches

The CNT SMI-S provider for CNT switches does not return the correct topology information when more than one fabric is managed by the same InVSN™ Storage Network Manager. McDATA, which completed its acquisition of CNT in the summer of 2005, has been made aware of this issue.

Unable to Find Elements on the Network

NOTE: This section only applies to Discovery from SE.

The management server uses ping to find the devices on the network enabled for IP. Ping is a program that lets you verify that a particular IP address exists. Ping is not guaranteed to return a response from all devices. If Discovery is not able to find a device automatically, enter the IP address for the device on the Discovery Targets tab, which can be accessed by clicking the Discovery button at the top of the screen in the management server. Sometimes ping cannot find the device if one of the following conditions occur:

•Network configuration does not support ping, including data center security (firewalls).

•Device has the ping responder turned off.

•Device does not support ping.

Unable to See Path Information

You will not be able to see path information if LUN masking information is missing. To view LUN masking information, follow the steps described in the section, ”Accessing Information About Host Security Groups” on page 333.

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