KnowledgeBase/CII.md

@@ -1222,6 +1222,31 @@ export FASTRTPS_DEFAULT_PROFILES_FILE=<path of XML file>
 
 ---
 
+---
+### Using DDS Monitor \[MAL DDS\]
+
+**Problem**
+
+The DDS monitor _fastdds_monitor_ can show all DDS Participants (peers) for the selected domain.
+
+**Solution**
+
+Important is that in order to enable publishing of this meta data, it must be enabled via an environment variable. For example:
+```plaintext
+export FASTDDS_STATISTICS="HISTORY_LATENCY_TOPIC;NETWORK_LATENCY_TOPIC;PUBLICATION_THROUGHPUT_TOPIC;\
+RTPS_SENT_TOPIC;RTPS_LOST_TOPIC;HEARTBEAT_COUNT_TOPIC;ACKNACK_COUNT_TOPIC;NACKFRAG_COUNT_TOPIC;\
+GAP_COUNT_TOPIC;DATA_COUNT_TOPIC;RESENT_DATAS_TOPIC;SAMPLE_DATAS_TOPIC;PDP_PACKETS_TOPIC;EDP_PACKETS_TOPIC;\
+DISCOVERY_TOPIC;PHYSICAL_DATA_TOPIC"
+
+Once this is done it appears the statistics are working fine.
+I already have some comments/feedback to eProsima. I welcome any feedback from your tests as well.
+
+It appears all MAL DDS peers have the name “RTPSParticipant”. I am sure this can be set in DDS and this is the default name (tbc).
+```
+---
+
+---
+
 ---
 
 ### Discovery over multiple NICs \[MAL DDS\]