Device connectivity
You can display the network at different OSI layering levels in the network map. Change the connectivity layer setting if you wish to focus on subnet membership, OSI layer 2 connections, OSI layer 3 connections, Protocol Independent Multicast (PIM), or Internet Protocol Multicast (IPM) routes.
If link status has been configured, then connections between devices are displayed as colored, corresponding to the severity of events on the devices. Connections can be displayed with an associated event status icon, if configured.
Administrator can enable to links to display status from poll policies. If it is not enabled, Link status option button is not displayed.
Connectivity layer settings vary as follows:
- Layer 1
- Displays all physical connections.
- Layer 2
- Displays all switched connections between devices in the topology. A layer 2 view typically shows switch and hub connections.
- Layer 3
- Shows routers and the connections between routers. Switches are not normally displayed.
Note: If switches have active connections involving layer 3 interfaces, they are included in this layout.
The connections between devices are displayed as follows:
- Connections between two layer 3 interfaces are shown as normal.
- Connections between a layer 3 and a layer 2 interface are shown as being between the layer 3 interface and the subnet to which the layer 2 interface belongs.
- Connections between two layer 2 interfaces are not shown.
- IP subnets
- Shows all devices within a subnet connected to a subnet cloud. This layout helps to simplify the network map and also helps to make subnet membership clear. If you want to see all connections, select one of the following options:
- Layer 1 for transmission layer connections.
- Layer 2 for data link connections.
- Layer 3 to show all routers and connections between them.
- OSPF
- Displays connections based on discovered OSPF information that includes router roles, area membership, and connectivity.
Probe- Displays the probe topology, linking probe sources to probe targets.
- Converged Topology
- Displays the lowest layer links between devices based on all layer 1, 2 and 3 topology data available.
- PIM
- Displays connections based on PIM adjacency information.
- IPMRoute
- Displays connections based on IP Multicast upstream and downstream routing information.
- Microwave
- Shows microwave connections only.
- Logical RAN
- Shows logical RAN connectivity. RAN entities are usually connected by L1 or L2 connections, but this logical connectivity allows an overview of the main RAN entities to be seen. Connections are usually implicit in the discovered data. For example, a base station controller is connected at some level to the base stations it manages. Logical RAN connectivity shows this relationship without any intermediate devices, such as multiplexers.
- No connections
- Does not present any of the discovered connections for the nodes shown in the view.
- LTE Control Plane
- Displays a topology view of the LTE control plane.
- LTE User Plane
- Displays a topology view of the LTE user plane.
- LTE S1-U
- Displays a topology view of LTE S1-U connectivity.
- LTE S5-U
- Displays a topology view of LTE S5-U connectivity.
- LTE S8
- Displays a topology view of LTE S8 connectivity.
- LTE S1-MME
- Displays a topology view of LTE S1-MME connectivity.
- LTE S10
- Displays a topology view of LTE S10 connectivity.
- LTE S11
- Displays a topology view of LTE S11 connectivity.
- LTE SGi
- Displays a topology view of LTE SGi connectivity.
- LTE Gx
- Displays a topology view of LTE Gx connectivity.
- LTE S3
- Displays a topology view of LTE S3 connectivity.
- LTE S4
- Displays a topology view of LTE S4 connectivity.
- LTE S6a
- Displays a topology view of LTE S6a connectivity.
- LTE S13
- Displays a topology view of LTE S13 connectivity.
- LTE X2
- Displays a topology view of LTE X2 connectivity.
- IMS Control Plane
- Displays a topology view of IMS Control Plane connectivity.
- IMX CX
- Displays a topology view of IMX CX connectivity.