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Lab 28: DLSw+ Reachability, Border Peers, Demand Peers, and Resilient Peers ”Part I

Practical Scenario

DLSw+ provides a way to control explorers and scale a DLSW network with the concept of border peers. Border peers greatly reduce the number of explorers on the link and the configuration of remote peers. This lab will give you experience configuring DLSw+ border peers, peer groups, and demand peers. This lab will also give you practice configuring DLSw resiliency.

Lab Exercise

The United States and Canada have established a tourism network. The tourism network will allow tourists to access to the latest information about popular sites in each country. Your task is to configure DLSw with the following guidelines:

  • Configure an IP network as depicted in Figure 13-50 using EIGRP as the routing protocol and 2001 as the Autonomous System ID.

    Figure 13-50. U.S. “Canadian Tourism Network

    graphics/13fig50.gif

  • Configure the WAN links to all use HDLC protocol. Configure the dual WAN links between the us_tour router and the us_border router so that one is a backup for the other. Both links should not be active at the same time.

  • Configure the DLSw peers on the network as depicted in Figure 13-50. Abide by the following guidelines:

    - Configure any-to-any SNA and NetBIOS reachability from all the Ethernet segments in the network.

    - Do not configure a peer between the us_tour and the canada_tour routers.

    - Do not bridge across any WAN interfaces.

    - Configure DLSw reachability such so the us_tour router advertises reachability to the station named US_STATIONS and the Canada_tour router advertises reachability to the station named CANADA_STATIONS.

    - Configure the peer between the us_tour router and the us_border router to remain up during the loss of the primary HDLC link. This peer should not drop while the network is converging over the new link.

Lab Objectives

  • Configure the network as depicted in Figure 13-50. Configure IP as denoted. Use EIGRP as the routing protocol, with an Autonomous System ID of 2001.

  • Configure the WAN links to all use HDLC protocol. Configure the dual WAN links between the us_tour router and the us_border router so that one is a backup for the other. Both links cannot be active at the same time.

  • Configure the DLSw peer groups and border peers as depicted in Figure 13-50. Abide by the following guidelines:

    - Configure two DLSw peer groups. Peer group 10 contains the U.S. routers, and peer group 20 contains the Canadian routers. Configure reachability between these two groups.

    - Configure DLSw so that a peer-on-demand will be created between the us_tour and the canada_tour routers. Do not configure a peer between the us_tour and canada_tour routers.

    - Configure DLSw reachability so that the us_tour router advertises reachability to the station named US_STATIONS and the Canada_tour router advertises reachability to the station named CANADA_STATIONS.

    - Configure the peer between the us_tour router and the us_border router to remain up during the loss of the primary HDLC link. This peer should not drop while the network is converging over the new link.

Equipment Needed

  • Four Cisco routers, connected together through V.35 back-to-back cables or in a similar manner.

  • Four LANs segments, provided by hubs or switches. The LAN topology is not significant for this lab.

Physical Layout and Prestaging

  • Connect the hubs and serial cables to the routers as shown in Figure 13-50.

  • You might want to use Windows 9 x workstations to test the peer-on-demand configuration.

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

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