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Network Topology

Overview 

Cisco Meraki MS switches must be deployed in the network for the Network Topology feature to be available.

 
Network topology is a powerful tool to provide administrators a graphic overview of the logical network topology and the status of any devices.

In combined networks, topology shows an integrated Cisco Meraki network that has MX Security Appliances, MS Switches, and MR Access points. Squares represent MX security appliances, rectangles represent MS switches, stacked rectangles represent MS physical switch stacks, and circles represent MR access points. Non-Meraki equipment is also detected if it is one hop away (and will appear as an empty diamond); depending on the protocols supported by a non-Meraki device, the topology view may be able to discern LLDP data like model type, IP, and manufacturer. Meraki devices in a different network will be denoted by blue diamonds.

Layer 2 Topology View

By default, the layer 2 topology is displayed.

L2.png

Learn which physical links in your network are most heavily-trafficked; simply hover over individual network links to learn statistics about that connection’s negotiated speed, usage, and number of directly connected clients using it in the past day. 

Layer 3 Topology View

In addition to the L2 Topology, the L3 Topology view allows administrators to visualize the L3 connectivity in their network. 

 

This tool enables administrator to quickly become familiar with a network environment. By hovering over different segments of the topology, key Layer 3 data points are instantly available. While hovering over a node—for example—Subnets, Node IPs on each specific Subnet, and Static Routes for that particular node are listed. While hovering over a specific VLAN, you can see the VLAN ID, VLAN Subnet, and Number of Clients on that VLAN in one location.

L3_Topology_View.png

The L3 Topology also streamlines the troubleshooting process by visualizing the network environment. For example, when two nodes should be able to communicate via a shared subnet but there is no visual connection between these nodes in the L3 topology, this may indicate that one or both of the nodes have a misconfiguration on that particular subnet.

 

Some of the rules that are used to generate the L3 Topology are listed below:

  • Nodes with interfaces on the same subnet will have lines drawn between them
  • If 3x or more nodes have interfaces on the same subnet, a pipe icon will be used to represent the subnet
  • If a non-Meraki device is detected as the next hop, a diamond will be used
  • The L3 Topology is structured as a tree, where the default route (0.0.0.0/0) is used to determine which device is upstream of a particular node

 

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