CloudVision Topology

The CloudVision Topology screen provides an explicit visual representation of the connectivity of your network, allowing you to understand your network's structure and performance more easily. It provides the following benefits:

  • Easily understand parts of your network by collapsing or filtering out irrelevant parts

  • Explore the historical state and performance of your network or watch it update live

  • Support for both datacenter and campus style network connectivity

CloudVision topology provides Virtual Extensible LAN (VXLAN), Internet Protocol Security (IPsec), Distributed Path Selection (DPS), and Link Layer Discovery Protocol (LLDP) network links between endpoints.

Note:

To view the Topology screen, click the Topology tab on the CloudVision Portal.

Figure: Topology Screen

This screen is divided into main and side panels. The main panel displays the main topology visualization. Devices are drawn with paths to connect them if they share at least one network connection. They are grouped into containers that can be expanded or collapsed to control which portions of the network are displayed in detail. See Main Panel of the Topology Screen .

The side panel provides the following panes to perform the specified functionalities:

Main Panel of the Topology Screen

The main panel displays the network topology where devices are grouped into containers according to their connectivity or assigned role in the network.

The icons in the following table represents specified containers:

Table 1. Icons Used in Network Topology
Cloud

Datacenter

Campus

Building

Floor

Pod

Rack

Spine

 

The icons in the following table represents specified devices:

Table 2. Device Icons
Switch

Wireless Access Point

Note: Blue WAP represents managed devices. Gray WAP represents unmanaged devices.

 

Management Device Badge

Note: This badge next to a device icon represents a management device.
Computer

Third Party Device

Telephone

This panel provides the following options for a detailed view:

  • Zoom to fit icon - Click to fit the topology on the screen.

  • Expand containers icon - Click to expand all containers in the topology.

  • Collapse containers icon - Click to collapse all containers in the topology.

  • Alternatively, right-click on the main panel to get Expand Network, Expand All, and Collapse All options.
    Figure: Right-Click on a Device
    Note: Right-click on a cluster to get cluster specific context menu options.
  • Download icon - Click to open the Export Preview pop-up window. Click Export for downloading the current topology image to your local drive in either PNG or SVG formats with selected image resolution.
    Note: We recommend to select higher resolutions for readable device labels in bigger topologies.
    Figure: Export Preview Pop-Up Window
  • Double-click on a container to expand it.

  • To collapse a container, hover the cursor on a dotted rectangular box and click on the displayed hyphen symbol.

    Figure: Collapse a Container
  • Click container component(s) to view corresponding information on the left panel.

  • Selected components are highlighted with dashed frame.

    Note: Press and hold the shift key while selecting multiple devices. Press and hold the shift key while dragging to select a region.
  • Hover the cursor on a topology component to view the count of corresponding events.

    Note: You must enable the option to view events.

Topology Overview

The Topology Overview pane provides the following options:

  • Layout - Click to view the Topology Layout pane. SeeTopology Layout Pane.

  • Options - Click to view the Topology Options pane. SeeTopology Options Pane.

  • Network Filters - Provides the following options to filter networks:

    • Management network - Display or hide management networks using the toggle button.

    • VLAN membership - To view desired VLAN(s), type either a VLAN ID or a range of VLANs.

      Figure: VLANs in Topology
      Note: The right panel displays selected VLAN(s) distinguished with various colors.
  • Link Overlay drop-down menu - Select an overlay to color each link based on selected metric type. Options include:

    • Active Events

    • Bandwidth Utilization

    • Discard Rate

    • Error Rate

    • Traffic Throughput

    • VLANs

    • None

  • Devices

    • Search field - Type the device name, MAC address, or model to perform a quick search.

    • List of devices - Click on a device to view the detailed information of corresponding device. See Device Details Pane.

Topology Layout Pane

On the Topology Overview pane, click Layout and select a container component from the topology on the right panel to edit layout hints of multiple device(s) in the Topology Layout pane.

Figure: Topology Layout Pane

Topology automatically tries to guess a layout with specified containers and roles for your devices based on their connectivity and advertised LLDP capabilities. However, you might sometimes find that the automatic categorization is incorrect, or you simply want a custom layout different from what was originally envisioned. The Layout pane lets you override the automatic categorizations and control the layout more directly.

The layout works on the basis of hints that describe the role of a device, whether it exists within a datacenter or campus network, and where it should go in that network. Devices with similar roles and positions in the hierarchy are grouped together. Parallel hierarchies like network pods or racks are created if different names are used.

Examples
  • A device named athens is a datacenter leaf switch, but it has no rack server connections yet and is miscategorized as an edge switch. You can click on athens and then select Node type as leaf to force it to take on a leaf role. It moves into the leaf position inside its datacenter hierarchy.

  • To partition your network into New York and San Francisco datacenters, multi-select the devices or containers that must go in the New York datacenter, type New York in the Datacenter field, and confirm it. Repeat the same process for San Francisco. Now, your network is divided between these two datacenters, and you can expand or collapse New York and San Francisco datacenters independently to view only one datacenter at a time.

This pane provides the following selections:

  • Network type drop-down menu - Select the network type that most closely matches your network arrangement. It provides the following options:

    • Campus - Devices are manually arranged in containers for different buildings and floors. It provides the following options:

      • Node type drop-down menu - Select the preferred device type or roles.

      • Building drop-down menu - Select the building name that the selected device preferred to be placed into.

      • Floor drop-down menu - Select the preferred floor number in the selected building.

      • Devices drop-down menu (Optional) - Set a name to be used to group devices in the selected floor.

    • Datacenter - Aspine-and-leaf type layout is used and devices are arranged into pods and racks. It provides the following options:

      • Node Type drop-down menu - Select the preferred device type or roles.

      • Pod drop-down menu - Select the pod name that the selected device preferred to be placed into.

        Note: Devices in different pods of the same datacenter appear in different pod containers that can be expanded and collapsed independently.
      • Rack drop-down menu - Select the name of a rack similar to pod.

  • Show Advanced - Click to view the Skip Auto-Generated Classifications drop-down menu.

    Note: Click Hide Advanced to hide the Skip Auto-Generated Classifications drop-down menu. If the Skip Auto-Generated Classifications option is enabled, CVP does not automatically identifies the device(s). Only manually-provided layout hints affect the layout of the selected device(s).
  • Set all to Auto - Use the automatic layout classification exclusively; all manually-specified layout hints are removed from selected devices.

  • Save button - Click to save latest changes.

Topology Options Pane

On the Topology Overview pane, click Options to edit display settings of topology.

Figure: Topology Options Screen

This pane provides the following selections:

  • Show active events: toggle button - If this option is enabled, active events are shown as badges on devices. These are the same events that are displayed on the Events page. If the same device has multiple events, the badge type of the highest severity event is displayed. Containers also show badges if they contain any devices with active events. This allows you to quickly find active events anywhere in a large network.

    Note: This option is enabled by default.
  • Use device images: toggle button - Enable this option to view photorealistic device images for identified devices. If this option is disabled, icons are used instead. See Figure 8.

    Figure: Network Hierarchy Tree with Images
  • Auto-detect management devices: - If this option is disabled, CVP will not attempt to automatically identify management devices. Devices are considered management devices if they are known to have a relatively high number of connections over a management interface.

  • Auto tagger hints pane - Influences the way devices are arranged. If a device’s hostname matches the provided text string or regular expression, it will automatically be tagged with the given role. Options include:

    • Spine Hint: - Type a text string that is used to identify matching spine devices.

    • Leaf Hint: - Type a text string that is used to identify matching leaf devices.

  • Save button - Click to save latest changes.

Container Details Pane

To view more information about a device or the devices in a container, click the corresponding device or container on the right panel.

Figure: Container Pane

This screen provides the following functionalities:

  • Expand - Expands the selected container.

  • Collapse - Collapses the selected container.

  • Layout - Edits layout hints of the selected container. See Topology Layout Pane.

  • Neighbors - Displays the list of connected devices from neighboring container.

    Note: Click on any neighboring device name to view the corresponding device pane. SeeDevice Details Pane.
  • Members - Displays the list of container members. Each entry provides the following options:

    • Device name - Click to view the corresponding device pane. See Device Details Pane.

    • View Connectivity - Click to view the connectivity between selected device and neighboring device. SeeLink Details Panel.

  • Active Events (Optional) - Displays events of the selected container. Click on an event link to view the corresponding event details screen.

    Note: This option is available only when the Show active events option is enabled in the Topology Options pane. See Topology Options Pane.

Device Details Pane

To get a device pane, click on a device (switch, wireless access point, server, or telephone) on the right panel. See Figure 10.

Figure: Device Details Pane

This screen provides the following functionalities:

  • Additional information on the device.

  • Device Overview - Click to view the Interface Overview screen.Device Overview

  • Events - Click to view the Events summary screen. See Events Summary Screen.

  • Metrics - Click to view the Explorer screen. SeeExplorer Tab.

  • Layout - Click to edit layout hints of the selected device. See Topology Layout Pane.

  • Neighbors - Displays the neighbors list of selected device. Each entry provides the following options:

    • Device name - Click to view the corresponding device pane.

    • View Connectivity - Click to view the connectivity between selected device and neighboring device. SeeLink Details Panel.

  • Active Events (Optional) - Displays events of the selected device. Click on an event link to view the corresponding Event Details screen.

Note: This option is available only when the Show active events option is enabled in the Topology Options pane. See Topology Options Pane.

Flow Visibility

 

On the Topology Overview pane, click Flows to open the Topology Flows panel. This screen displays traffic flows detected by EOS devices on the network.

Figure: Topology Flow Search
Note:
  • CVP displays traffic flows only when SFLOW of IPFIX are configured on EOS devices.
  • For complete flow visibility, flow collectors are required on all devices along the traffic flow path.

The Topology Flows panel searches for traffic flows via specified IP address, hostname, ports or IP protocol and lists the flow results that match the given search parameters.

You can limit the count of displayed flows via the options available in the Top dropdown. Traffic flows sorted by the selected metric (Bytes, Packets, and Newest) from the results sorted by dropdown menu are displayed on the top of the list.

The listed traffic flows in the side panel displays the five-tuple information. The arrow indicates the direction of traffic flow.

Figure: Topology Host showing Flows

In this example, TCP protocol is used in the traffic flowing from p4-proxy101.sjc.aristanetworks.com via 1666 port to bs332.sjc.aristanetworks.com via 37150 port. 36.6GB of data is flown over the given time window.

Flows are displayed based on the timeline selected at the bottom of the Window. To search previous flows, select an earlier time by either using the timeline's time selector, or by dragging the displayed time window to a different position.

Note: Live view updates the data every 60 seconds.

Flow Highlight

Clicking on a listed traffic flow result highlights the nodes and edges in the graph where the flow has been seen. Animated dots indicate the direction of the traffic flow.

Figure: Highlighted Traffic Flow
Note:
  • In environments that capture flow data through sFlow, devices may not capture short-lived or small flows, especially if the selected time window is small.
  • This highlight does not guarantee to capture the exact path; it just displays all the devices and links where that flow was seen in the given time window.

The Devices Reporting Matching Flows section displays the five-tuple information and lists devices that reported the flow. Each device entry includes the ingress and egress interface, packets, bytes and the timestamp when this flow was seen given the time window.

Click on the following entities to view the corresponding specified information:
  • Eye icon to magnify the device on the main panel
  • Device hostname to view the Device Overview page
  • Interface to view the Interface Overview page
  • Explore button to the Traffic Flows

Flow Animation

Few browsers consume high amounts of CPU to render traffic flow animations. To avoid the traffic flow animation, click Settings on the Toplogy Overview panel and disable it using the Enable traffic flows animation toggle button.

Figure: Enabling Traffic Flow Animation in Settings

Animated dots are replaced with static arrows indicating the direction of flow.

Figure: Topology with Disabled Traffic Flow Animation