Summarizing Network Routes and Subnets

The Routes section lists routes reported by all devices in the network, from each of their interfaces, during the last network polling cycle by NetMRI. It displays only Best Origin routes from the network. That is, NetMRI filters all collected routes to find a route with a minimal Administrative Distance for each CIDR and displays only this one.

Click the View All Routes link to list all routes in the center panel. Then apply a filter, such as an IP address, to isolate them for a device. This effectively allows you to view the routing table for a device in NetMRI.

Routes are listed by the protocol (proto), the route's IP, the VRF Name containing the interface, its VRF route distinguisher, and the Count. The count is the number of devices reporting that particular route during the last polling period. All IPv4 and IPv6 routes are listed for all router and switch-router devices.

• 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.

• To view detailed data for a device, click the IP address hyperlink in the center panel. The Device Viewer opens.

The Subnets section lists subnets found in the network, the Network View for the management IP of the device reporting the subnets, and its VRF Name (if any). The list of subnets is compiled from all router and switch-router devices discovered and cataloged by NetMRI, including any virtual device contexts (VDC).

• For subnets, the Count is the number of devices discovered as part of the subnet during the last polling period.

• To list all devices in the subnet, click a subnet in the left panel.

• To view detailed data for any device in a subnet, click the IP address hyperlink in the right panel. The Device Viewer opens, listing any current Issues associated with the selected device.

The Device Viewer is not limited to this information. Seven categories of detailed information are provided by the Device Viewer for the displayed network entity. For more information, see Inspecting Devices in the Network.