Use the lltstat command to verify that links are active for LLT. If LLT is configured correctly, this command shows all the nodes in the cluster. The command also returns information about the links for LLT for the node on which you typed the command.
Refer to the lltstat(1M) manual page for more information.
To verify LLT
Run the lltstat command on the node galaxy to view the status of LLT.
lltstat -n
The output on galaxy resembles:
LLT node information: Node State Links *0 galaxy OPEN 2 1 nebula OPEN 2
Each node has two links and each node is in the OPEN state. The asterisk (*) denotes the node on which you typed the command.
Run the lltstat command on the node nebula to view the status of LLT.
lltstat -n
The output on nebula resembles:
LLT node information: Node State Links 0 galaxy OPEN 2 *1 nebula OPEN 2
To view additional information about LLT, run the lltstat -nvv command on each node.
For example, run the following command on the node galaxy in a two-node cluster:
lltstat -nvv | more
The output on galaxy resembles:
Node State Link Status Address *0 galaxy OPEN lan1 UP 08:00:20:93:0E:34 lan2 UP 08:00:20:93:0E:34 1 nebula OPEN lan1 UP 08:00:20:8F:D1:F2 lan2 DOWN 2 CONNWAIT lan1 DOWN lan2 DOWN 3 CONNWAIT lan1 DOWN lan2 DOWN . . . 31 CONNWAIT lan1 DOWN /dev/lan:2 DOWN
Note that the output lists 32 nodes. The command reports the status on the two nodes in the cluster, galaxy and nebula, along with the details for the non-existent nodes.
However, the output in the example shows different details for the node nebula. The private network connection is possibly broken or the information in the /etc/llttab file may be incorrect.
To obtain information about the ports open for LLT, type lltstat -p on any node.
For example, type lltstat -p on the node galaxy in a two-node cluster:
lltstat -p
LLT port information: Port Usage Cookie 0 gab 0x0 opens: 0 2 3 4 5 6 7 8 9 10 11 ... 28 29 30 31 connects: 0 1 7 gab 0x7 opens: 0 2 3 4 5 6 7 8 9 10 11 ... 28 29 30 31 connects: 0 1 31 gab 0x1F opens: 0 2 3 4 5 6 7 8 9 10 11 ... 28 29 30 31 connects: 0 1