Open topic with navigation

# The Topology View and Unmanaged Devices

This section details various scenarios for the inclusion of devices not managed by ArcMC in your network, and the effect of each scenario on the ArcMC Topology View. Particularly when connectors (or Collectors) are chained together in a multi-tier configuration, unmanaged products can block the view from their immediate downstream neighbor.

## Scenario 1: No Unmanaged Devices

In this scenario, no umanaged products are included in the network. As a result, the ArcMC Topology view is unimpeded and gives an accurate picture of the logical topology as viewed from any location.

## Scenario 2: Unmanaged Connector in Location L1

This scenario shows an unmanaged connector in location L1 and the results on the Topology View as seen from locations L2 and L3. No view is seen from L1, since it does not include any managed nodes. The view at the other downstream locations is as expected.

## Scenario 3: Unmanaged Connector in Location L2

In this scenario, an unmanaged connector is located in Location L2 and chained to connectors in locations L1 and L2. This blocks the Topology view of L1 as seen from L3. In addition, the destination Logger or ESM shows no traffic from L1.

## Scenario 4: Unmanaged Connector in Location L3

In this scenario, an unmanaged connector is in Location L3. This impedes an accurate Topology view of location 3. In fact, no traffic from locations L1 and L2 is shown for the destination Logger/ESM.

To get the most complete and accurate topological view, you are strongly encouraged to use ArcMC to manage all supported connectors (or Collectors) included in your logical topology.