Lab 8.4.7: Frame Relay Traffic Shaping - Rate Enforcement

Objectives:

  • Configure rate enforcement on our Frame Relay network to prevent a site with a high speed connection from overrunning a site with a low-speed connection.

Scenario:

Your main office in Atlanta has a high-speed T1 Frame Relay connection. It is over-running your remote sites that only have 56K Frame Relay connections. Install rate enforcement on your router in Atlanta to control how much traffic is sent to these sites. Routing should be handled using IGRP.

Notes: 

Lab Tasks:

  1. Cable the lab as shown in the diagram. Use the Adtran Atlas 550 to simulate the Frame Relay network. Start with a clean configuration on all routers.
  2. Configure IP addresses on the Ethernet interfaces.
  3. Configure IGRP on all routers. Use AS# 100.
  4. Configure the serial interfaces that connect to the Frame Relay network for Frame Relay encapsulation and set the LMI type to ANSI.

    Use sub-interfaces on the router in Atlanta - This will allow us to add rate enforcement profiles to each connection independently.

    Use the DLCI number of each PVC as your sub-interface number. Check your routing tables and verify connectivity.

  5. Create Frame Relay map classes for each site. Set the maximum bandwidth for each link at 56kbps.
  • On the Atlanta router:

Atlanta(config)#map-class frame-relay Orlando
Atlanta(config-map-class)#frame-relay traffic-rate 28000 56000
Atlanta(config)#map-class frame-relay Houston
Atlanta(config-map-class)#frame-relay traffic-rate 28000 56000

Turn on traffic shaping on the physical interface:

Atlanta(config)#int s0/0
Atlanta(config-if)#frame-relay traffic-shaping

Apply the map classes to the sub-interfaces:

Atlanta(config)#int s0/0.17
Atlanta(config-if)#frame-relay class orlando
Atlanta(config-if)#int s0/0.18
Atlanta(config-if)#frame-relay class houston

What does the first number represent in the traffic-rate command?

What does the second number represent in the traffic-rate command?

  1. What command can be used to verify traffic shaping is turned on?