Replacing the Fibre Channel switch

To replace the Fibre Channel switch:

If there are multiple online paths for a device in an LU, you can replace a desired Fibre Channel switch while running your applications by placing offline only the path that goes through the Fibre Channel switch to be replaced, and using other paths to continue accesses.

The following steps show an example procedure for replacing a Fibre Channel switch. Note that this procedure only applies for replacing a Fibre Channel switch.

This example assumes the system configuration as below:

1. Place in Offline (C) status the path that goes through the Fibre Channel switch to be replaced (path that goes through the HBA to which the Fibre Channel switch is connected).

   For example, to place in Offline (C) status the path that goes through the HBA with host port number 0001 and bus number 0000, execute the following command:

   # /opt/DynamicLinkManager/bin/dlnkmgr offline -hba 0001.0000

   While the path that goes through the HBA with host port number 0001 is placed Offline, the status of the path that goes through the HBA with host port number 0002 is Online.

   Figure. When the status of the path that goes through the Fibre Channel switch to be replaced is Offline(C)

2. Replace the Fibre Channel switch for the path that has been placed in Offline(C) status.

   In this example, replace the Fibre Channel switch connected to the HBA with host port number 0001.

3. Place in Online status the path that goes through the replaced Fibre Channel switch.

   For example, to place in Online status the path that goes through the HBA with host port number 0001 and bus number 0000, execute the following command:

   # /opt/DynamicLinkManager/bin/dlnkmgr online -hba 0001.0000

4. Check the path information.

   For example, execute the following command:

   # /opt/DynamicLinkManager/bin/dlnkmgr view -path 

   For details about the path information, see view (displays information).