This topic describes the Topology Explorer.

The Topology Explorer is a graphical representation of the interconnected GemFire clusters within their network. It provides a visual representation of the architecture and connections between clusters, aiding in comprehensive network management and troubleshooting.

Understanding the Interface

To access the Topology Explorer, select a cluster from the dropdown menu. This selection sets the initial perspective for generating the network visualization diagram, which provides a high-level overview of the entire network topology, including cluster distribution and interconnections based on the available information. To view the topology from a different cluster’s perspective, choose another cluster from the dropdown.

Cluster Visualization

Each cluster is represented as a distinct node within the interface. Depending on the available information, the cluster label can include:

• The cluster nickname
• The cluster distributed system ID (DSID)
• The member ID

Cluster Connections

Connections between clusters are depicted as arrows, symbolizing the flow of data between them. These arrows are color-coded to convey the status of the connection:

• Green: Indicates a functional connection with both sender and receiver operating as expected.

• Yellow: Indicates that some senders and receivers are functioning incorrectly and further analysis is required.

• Red: Indicates a total connection loss between clusters.

Click on these connections to access detailed information about the connection. A table displays additional details about the cluster’s gateway senders, including:

• ID: The identifier of the sender.
• Member: The member on which the sender is running.
• Queued Events: The number of events queued for sending to the receiver.
• Overflowing to Disk: Whether the sender queue has exceeded memory capacity and is overflowing to disk.
• Connection Status: The connectivity status between the sender and receiver.