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- To list devices comprising the route: Click a route in the left panel. The center panel refreshes to show the device reporting the route, the route's interface from which it was reported, the Network View for the management IP of the device reporting the route, and the route's Next Hop. The list also shows each device's Route Distinguisher. This feature can be helpful in tracing a path, and can be helpful with Path Analysis.
- To view detailed data for a device: Click the IP address hyperlink in the center panel. The Device Viewer opens.
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- The global Network View, where you can view different parts of the network based on the network type: the aggregate, which shows all active links of every type; Link Discovery Protocols, Serial Links and Switch Forwarding, which shows only Ethernet-switched connections throughout the network;
- The L2 nHop Network Topology, showing the Layer 2 switching paths of the network;
- The L3 nHop Network Topology, showing the Layer 3 switching/routing paths of the network;
- The L2/L3 Most Likely Path Network Topology, indicating the spanning tree paths preferred by switched network traffic in the network;
- The L3 Most Likely Path Network Topology, indicating the routed paths preferred by most packet flows in the network;
- The VLAN Network Topology, mapping the paths of VLANs throughout the network;
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Note: The Most Likely Path and Path Analysis options require option requires the selection of a source network view.
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In all topology types (L2 nHop Network Topology, L3 nHop Network Topology, and so on) clicking on a device in the left-pane list displays a Hop Count selector. This selector changes its fields based on the protocol. (The figure to the left shows an L3 n Hop selector, in which you can choose a Hop Count from 1 to 4, and the protocol to view. The protocol you choose may or may not be active for the current device.The Hop Count selector does not apply to the Path Analysis feature.
After you generate a graph, follow the topics below to change and enhance the graph.
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L3 n Hop shows all active devices that can be reached from a selected starting device in the network through a chosen number of routed Level 3 connections. In the resulting graph, the name of the starting device is highlighted in green. Devices that cannot be reached, or that are farther away than the Hop Count are not shown in the resulting view. The information conveyed here can be considered a superset of the Path Analysis feature, which shows the preferred L3 routed path from the selected stating device to a defined destination device.
- In the left panel, click L3 n Hop.
- In the left panel, click the row containing the starting device.
- In the L3 n Hop dialog, select a Hop Count and a Protocol.
- Click OK.
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