Reading Layer 3 Network Diagram

The two primary and common hierarchical design architectures of enterprise campus networks are the three tier and two tier layers models.

Reading layer 3 network diagram. Provides policy based connectivity and boundary control between the access and core layers. These comparisons are based on the original seven layer protocol model as defined in iso 7498 rather than refinements in the internal organization of the network layer. The biggest single problem i m seeing when working on enterprise networks is the lack of l3 logical network diagrams. Computer network diagrams solution extends conceptdraw pro software with samples templates and libraries of vector stencils for drawing the computer network topology diagrams.

Provides workgroup user access to the network. Then i make a layer 2 diagram showing the switch connections trunks and lacp channels. Also logical diagrams are in many cases more valuable than. A more modern version of a switch that is being more popular and thus more often seen in newer diagrams is a layer 3 switch.

A router works with ip addresses at layer 3 of the model. L3 diagrams are vital for troubleshooting or for planning changes. A design diagram for this network contains a lot less information and more accurately represent the approach or the intent of the design. Layer 3 network diagram.

Let s go through it with the help of an example. The link layer corresponds to the osi data link layer and may include similar functions as the physical layer as well as some protocols of the osi s network layer. It s also a good idea to make a separate diagram for each network protocol layer. The below diagram shows the operation of the inter vlan routing with the layer 3 switch in combination with the l 2 switch.

You can edit this network diagram using creately diagramming tool and include in your report presentation website. A network diagram showing layer 3 logical. Layer 3 networks are built to run on on layer 2 networks. In a university the pc s of faculties staff and students are connected via l 2 and l 3 switches on a different set of vlan s.

For example the high level design for the diagram above would look something like this where the design intent that all elements are redundant is not clear from looking at the diagram but. This requires stripping off the datalink layer frame information. A layer 3 switch also handles layer 2 frames like a normal switch but also has the capability to process packets at layer 3 the symbol for a layer 3 switch is shown in figure 4. In an ip layer 3 network the ip portion of the datagram has to be read.

Most of the time i m facing situations where a customer doesn t have any logical network diagrams to give.