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Displaying listening connections in a cluster

You can display information about the listening connections in a cluster to view the LIFs and ports that are accepting connections for a given protocol and service.

About this task

Viewing the listening connections in a cluster is useful in the following scenarios:

  • Verifying that the desired protocol or service is listening on a LIF if client connections to that LIF fail consistently.

  • Verifying that a UDP/rclopcp listener is opened at each cluster LIF if remote data access to a volume on one node through a LIF on another node fails.

  • Verifying that a UDP/rclopcp listener is opened at each cluster LIF if SnapMirror transfers between two nodes in the same cluster fail.

  • Verifying that a TCP/ctlopcp listener is opened at each intercluster LIF if SnapMirror transfers between two nodes in different clusters fail.

Display the listening connections per node by using the network connections listening show command.

Example

cluster-1::> network connections listening show
Vserver Name     Interface Name:Local Port        Protocol/Service
---------------- -------------------------------  ----------------
Node: node0
Cluster          node0_clus_1:7700                TCP/ctlopcp
vs1              data1:4049                       UDP/unknown
vs1              data1:111                        TCP/port-map
vs1              data1:111                        UDP/port-map
vs1              data1:4046                       TCP/sm
vs1              data1:4046                       UDP/sm
vs1              data1:4045                       TCP/nlm-v4
vs1              data1:4045                       UDP/nlm-v4
vs1              data1:2049                       TCP/nfs
vs1              data1:2049                       UDP/nfs
vs1              data1:635                        TCP/mount
vs1              data1:635                        UDP/mount
Cluster          node0_clus_2:7700                TCP/ctlopcp