OSPF Flooding Reduction

 <  Free Open Study  >  

Lab 23: Default Routing, Route manipulation, and Filtering in EIGRP Networks ”Part I

Practical Scenario

Most networks today are connected to the Internet in some form. Connecting to the Internet usually requires a default route to be propagated throughout the network. The following lab gives you practice in controlling routes and propagating a default route throughout EIGRP.

Lab Exercise

Small groups of Internet coffee shops and their suppliers have pooled to leverage a common connection to the Internet. Solar Bucks Inc., G & S INC of Switzerland, and Barneys have decided to share common networks while providing new services to their customers. Some shops also have private networks and do not want them propagated to other coffee shops . Your task is to configure an EIGRP network using the following parameters as design guidelines:

  • Configure an IP network as depicted in Figure 11-14, using EIGRP as the routing protocol and 2001 as the Autonomous System ID.

    Figure 11-14. Internet Coffee Shop Network

    graphics/11fig14.gif

  • Configure the Frame Relay network as a point-to-point network among all the routers. Do not create a multipoint network.

  • Do not allow any other shops to see the subnet 172.16.3.0/24 on the barneys router.

  • Inject a default route into the solar_bucks router pointing all traffic to the internet_router.

  • The direct Frame link between solar_bucks and g_and_s router is very expensive. Configure EIGRP so that traffic from g_and_s will go first to barneys and then to solar_bucks. If the PVC between barneys and g_and_s drops , traffic will flow directly from g_and_s to solar_bucks.

Lab Objectives

  • Configure the Internet Coffee Shop Network as depicted in Figure 11-14. Configure IP as denoted in the diagram. The LAN topology type is not important in this lab.

  • Use the Frame Relay data link protocol on the WAN. Use only point-to-point networks on the Frame Relay network.

  • Ensure full IP connectivity to all IP interfaces ”that is, be sure that you can ping all Frame Relay and LAN interfaces except those that are filtered.

  • Filter the network 172.16.3.0/24 from g_and_s and solar_bucks routers.

  • Inject a default route into the solar_bucks router pointing all traffic to the internet_router.

  • Control routes so that the traffic from the g_and_s router passes through barneys before it hits the Internet. Traffic to 172.16.50.0/0 also should go through the barneys router. Do not use policy routing.

Equipment Needed

  • Five Cisco routers. Three will be connected through V.35 back-to-back cables or in a similar manner to a Frame Relay switch.

  • Four LAN segments, provided through hubs or switches. The LAN topology is not significant to this lab. The Internet connection can be real or not; it does not affect the configuration of the router.

Physical Layout and Prestaging

  • Connect the hubs and serial cables to the routers, as shown in Figure 11-14.

  • Configure an additional router to serve as the connection to the Internet. Use EIGRP for the routing protocol.

  • A Frame Relay switch with three PVCs also is required. Example 11-43 lists the Frame Relay configuration used in this lab.

Example 11-43 Frame Relay Switch Configuration
  hostname frame_switch   !   frame-relay switching   !  <<<text omitted>>>  !   interface Serial0   no ip address   encapsulation frame-relay   no fair-queue   clockrate 148000   frame-relay intf-type dce   frame-relay route 111 interface Serial1 110   frame-relay route 121 interface Serial3 102   !   interface Serial1   no ip address   encapsulation frame-relay   clockrate 148000   frame-relay intf-type dce   frame-relay route 110 interface Serial0 111   frame-relay route 130 interface Serial3 131   !   interface Serial2   no ip address   shutdown   !   interface Serial3   no ip address   encapsulation frame-relay   clockrate 64000   frame-relay intf-type dce   frame-relay route 102 interface Serial0 121   frame-relay route 131 interface Serial1 130   !  
 <  Free Open Study  >  


CCIE Practical Studies, Volume I
CCIE Practical Studies, Volume I
ISBN: 1587200023
EAN: 2147483647
Year: 2001
Pages: 283
Authors: Karl Solie

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net