tailieunhanh - Lab 2.3.2 Configuring OSPF Loopback Addresses

Cable a network similar to the one shown in the diagram. Any router that meets the interface requirements displayed on the above diagram may be used. For example, router series 800, 1600, 1700, 2500, and 2600 or any such combination can be used. Please refer to the chart at the end of the lab to correctly identify the interface identifiers to be used based on the equipment in the lab. The configuration output used in this lab is produced from 1721 series routers. Any other router used may produce slightly different output. Perform the following steps on each router unless. | Cisco Systems I Lab Configuring OSPF with Loopback Addresses Router 1 Router2 Rl Router 3 Router Designation Name OSPF Network Router 1 Router 2 Router 3 Router Enable Secret Enable VTY Console Routing Password Passwords Protocol Routing ID Statements London Berlin Brasilia class cisco OSPF class cisco OSPF class cisco OSPF 1 1 1 Router Designation IP Host Name FastEthernet 0 Address Subnet Mask Loopback Interface Subnet Mask Router 1 Ottawa Brasilia 24 32 Router 2 London Brasilia 24 32 Router 3 London Ottawa 24 32 Straight-through cable Serial cable Console Rollover Crossover cable Objective Configure routers with a Class C IP addressing scheme. Observe the election process for designated routers DR and BDR on the multi-access network. Configure loopback addresses for Open Shortest Path First OSPF stability. Assign each OSPF interface a priority to force the election of a specific router as DR. Background Preparation Cable a network similar to the one shown in the diagram. Any router that meets the interface requirements displayed on the above diagram may be used. For example router series 800 1600 1700 2500 and 2600 or any such combination can be used. Please refer to the chart at the end of the lab to correctly identify the interface identifiers to be used based on the equipment in the lab. The configuration output used in this lab is produced from 1721 series routers. Any other router used may produce slightly different output. Perform the following steps on each router unless specifically instructed otherwise. Start a HyperTerminal session. Note Go to the erase and reload instructions at the end of this lab. Perform those steps on all routers in this lab assignment before continuing. 1 - 7 CCNA 3 Switching Basics and Intermediate Routing v - Lab Copyright 2003 Cisco Systems Inc. Step 1 Configure the routers On the routers enter the