CCNA Packet Tracer Lab Understanding Frame-Relay

In this free CCNA lab we will use Packet Tracer to model several Frame-Relay scenarios to help us understand and configure Frame-Relay. These scenarios will include Full Mesh, Hub and Spoke, and Sub Interfaces. We will also explore the problems that may occur when using a Dynamic Routing protocol such as RIP, EIGRP, or OSPF.


Learning Objectives:

  • Review basic router configuration.
  • Review Static Routing Review Dynamic Routing.
  • Understand and configure a full mesh Frame-Relay.
  • Understand and configure a hub and spoke Frame-Relay.
  • Understand and configure a Point to Point Frame-Relay.
  • Understand and configure a Point to Multi Point Frame-Relay.
  • Understand and configure Sub Interfaces.
  • Understand and configure the following Frame-Relay commands.
    • Encapsulation Frame-Relay.
    • Frame-Relay Interface.
    • Frame-Relay Map.
    • Frame-Relay LMI-Type.
    • Split-horizon.


Frame-Relay is a standardized wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology. Originally designed for transport across Integrated Services Digital Network (ISDN) infrastructure, it may be used today in the context of many other network interfaces.

There are two main types of Frame-Relay configurations Full Mesh and Hub and Spoke.

Full Mesh:

The Full Mesh Frame-Relay has a dedicated connection from each connected device to all other devices. Therefore a network with four routers would require six dedicated connections.  The advantages of this configuration is the reliability if a device or connection is lost the remainder of the network still functions and speed as each connection has full bandwidth. The disadvantages are cost and complexity.

Hub and Spoke:

The Hub and Spoke Frame-Relay utilizes a single devise as the hub and has dedicated connections to all other connected devices the spokes. Communication between the spoke devices will be routed through the hub device. The main advantages to this configuration are cost and simplicity as the number of connection is far less. A network consisting of four routers would only require three dictated connections. The disadvantage of course are speed and reliability as the communication between spoke devices must be routed through the hub device and a failure of the hub device will result in a failure of the entire network.

Lab Topology:

In this Activity we have provided two Packet Tracer topologies. The first is a for the Full Mesh Frame-Relay part of the lab and the second in for the Hub and Spoke part. The Hub and Spoke topology will be used for the Hub and Spoke, Sub Interfaces and Dynamic Routing labs. The Frame-Relay cloud, ISP router, Web server and all PC’s have been configured and will require no additional configuration. The goal of these labs is to establish full connectivity between all end pc’s and the web server. The final configuration for each of these scenarios has been provided so you can compare your solution.

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