diff --git a/cli/src/main/java/org/onlab/onos/cli/net/ClusterIdCompleter.java b/cli/src/main/java/org/onlab/onos/cli/net/ClusterIdCompleter.java
new file mode 100644
index 0000000..e39e01b
--- /dev/null
+++ b/cli/src/main/java/org/onlab/onos/cli/net/ClusterIdCompleter.java
@@ -0,0 +1,35 @@
+package org.onlab.onos.cli.net;
+
+import org.apache.karaf.shell.console.Completer;
+import org.apache.karaf.shell.console.completer.StringsCompleter;
+import org.onlab.onos.cli.AbstractShellCommand;
+import org.onlab.onos.net.topology.Topology;
+import org.onlab.onos.net.topology.TopologyCluster;
+import org.onlab.onos.net.topology.TopologyService;
+
+import java.util.List;
+import java.util.SortedSet;
+
+/**
+ * Cluster ID completer.
+ */
+public class ClusterIdCompleter implements Completer {
+    @Override
+    public int complete(String buffer, int cursor, List<String> candidates) {
+        // Delegate string completer
+        StringsCompleter delegate = new StringsCompleter();
+
+        // Fetch our service and feed it's offerings to the string completer
+        TopologyService service = AbstractShellCommand.get(TopologyService.class);
+        Topology topology = service.currentTopology();
+
+        SortedSet<String> strings = delegate.getStrings();
+        for (TopologyCluster cluster : service.getClusters(topology)) {
+            strings.add(Integer.toString(cluster.id().index()));
+        }
+
+        // Now let the completer do the work for figuring out what to offer.
+        return delegate.complete(buffer, cursor, candidates);
+    }
+
+}