Lab 26: Transparent Bridging, Remote Source-Route Bridging, LSAP Filtering ”Part I Practical Scenario Nonroutable protocols such as NetBIOS and SNA are still much alive in the modern internetwork. There are many ways to transport these protocols across the network. This lab gives you practice in performing transparent bridging and RSRB, setting root, and LSAP filters. Lab Exercise An underground network of crime fighters exists in secret locations from the valleys of California to the hills of northern Wisconsin. The specific locations are secret, and the routers are identified only by code names , such as trashman and beerbelly. The crime fighters want to link their existing networks, to utilize the super computer H.O.O.V.E.R. Their supercomputers, H.O.O.V.E.R. and H.O.O.V.E.R.2, are SNA mainframes, so the remote sites must be bridged to the crime fighters' headquarters. Your task is to configure a bridged and routed network, using the following design guidelines: -
Configure an IP network, as depicted in Figure 13-45, using EIGRP as the routing protocol and 2001 as the Autonomous System ID. Figure 13-45. Crime Fighters Network  -
Configure the Frame Relay network as depicted in Figure 13-45. Do not configure DLSw in this lab. -
Configure the network so that the routers lone_rhino and trashman can transport SNA to the HQ site or the wolf router. -
Configure the router beerbelly so that it has SNA access to the mainframe H.O.O.V.E.R.2. The H.O.O.V.E.R.2 mainframe requires a RIF. Ensure that your configuration supports this. -
Do not allow NetBIOS traffic from Ring 2 on the beerbelly router to Ring 1 on the wolf router. -
Set the wolf router to be root of the transparent bridging domain. -
A "double secret" workstation is located off the Token Ring interface on the beerbelly router. Because this workstation is so secret, you need to configure a static RIF to it. Configure the RIF as follows : Secret Workstation MAC = 0101.0027.0081; RING2-BRIDGE9-RING50-BRIDGE5-RING52-BRIDGE13-RING7. Lab Objectives -
Configure the crime fighters network as depicted in Figure 13-45. Configure IP as denoted in the figure. Use EIGRP as the routing protocol, with an Autonomous System ID of 2001. -
Use Frame Relay as the data link protocol on the WAN. Configure a Frame Relay multipoint network between the wolf, lone_rhino, and trashman routers. Configure a Frame Relay point-to-point network between the wolf and beerbelly routers. -
Configure transparent bridging on the Ethernet interfaces of the lone_rhino, trashman, and wolf routers. Bridge these routers over the Frame Relay network. -
Configure remote source-route bridging between the Token Ring interfaces of the beerbelly and wolf routers. -
Configure source-route bridging so that NetBIOS traffic will not be forwarded by the remote source-route bridge. -
Configure a static RIF on the beerbelly router with the following guidelines: MAC = 0101.0027.0081; RING2-BRIDGE9-RING50-BRIDGE5-RING52-BRIDGE13-RING7. Equipment Needed -
Five Cisco routers. Four will be connected through V.35 back-to-back cables or in a similar manner to a Frame Relay switch. -
Five LANs segments, provided by hubs or switches. One router will need a Token Ring interface and an Ethernet interface. One other router will need to be Token Ring as well. Physical Layout and Prestaging Example 13-43 Frame Relay Switch Configuration hostname frame_switch ! 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 ! 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 frame-relay route 180 interface Serial5 181 ! <<<text omitted>>> ! interface Serial3 no ip address encapsulation frame-relay clockrate 64000 frame-relay intf-type dce frame-relay route 131 interface Serial1 130 ! <<<text omitted>>> ! interface Serial5 no ip address encapsulation frame-relay clockrate 64000 frame-relay intf-type dce frame-relay route 181 interface Serial1 180 |
