How to Disable a Cluster Transport Cable

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You might need to disable a cluster transport cable to temporarily shut down a cluster interconnect path. A temporary shutdown is useful when troubleshooting a cluster interconnect problem or when replacing cluster interconnect hardware.

When a cable is disabled, the two endpoints of the cable remain configured. An adapter cannot be removed if it is still in use as an endpoint in a transport cable.

Caution - Each cluster node needs at least one functioning transport path to every other node in the cluster. No two nodes should be isolated from one another. Always verify the status of a node's cluster interconnect before disabling a cable. Only disable a cable connection after you have verified that it is redundant. That is, ensure that another connection is available. Disabling a node's last remaining working cable takes the node out of cluster membership.

The phys-schost# prompt reflects a global-cluster prompt. Perform this procedure on a global cluster.

This procedure provides the long forms of the Oracle Solaris Cluster commands. Most commands also have short forms. Except for the long and short forms of the command names, the commands are identical.

Note - You can also use the Oracle Solaris Cluster Manager browser interface to disable a cable. Click Private Interconnects, click Cables, click the number of the cable to highlight it, then click Disable. For Oracle Solaris Cluster Manager log-in instructions, see How to Access Oracle Solaris Cluster Manager.

Assume the root role on any node in the cluster.

Check the status of the cluster interconnect before disabling a cable.

# clinterconnect status

Caution - If you receive an error such as “path faulted” while attempting to remove one node of a two-node cluster, investigate the problem before continuing with this procedure. Such a problem could indicate that a node path is unavailable. Removing the remaining operational path takes the node out of cluster membership and could result in a cluster reconfiguration.

Start the clsetup utility.
```
# clsetup
```
The Main Menu is displayed.

Type the number for the option for accessing the Cluster Interconnect Menu.

Type the number for the option for disabling the transport cable.
Follow the prompts and provide the requested information. All of the components on this cluster interconnect will be disabled. You need to provide both the node and the adapter names of one of the endpoints of the cable that you are trying to identify.

Verify that the cable is disabled.

# clinterconnect show  node:adapter,adapternode

Output is similar to the following:

# clinterconnect show  -p phys-schost-1:net5,hub2
Transport cable:   phys-schost-2:net0@0 ethernet-1@2    Disabled
Transport cable:   phys-schost-3:net5@1 ethernet-1@3    Enabled
Transport cable:   phys-schost-1:net5@0 ethernet-1@1    Enabled