5.0.1.2 DR and BDR Elections Instructions IG - Lab...

This preview shows page 1 - 3 out of 14 pages.

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 1of 14Lab - Troubleshooting NAT Configurations (Instructor Version)Instructor Note: Red font color or Gray highlights indicate text that appears in the instructor copy only. Topology Addressing Table Device Interface IP Address Subnet Mask Default Gateway Gateway G0/1 192.168.1.1 255.255.255.0 N/A S0/0/1 209.165.200.225 255.255.255.252 N/A ISP S0/0/0 (DCE) 209.165.200.226 255.255.255.252 N/A Lo0 198.133.219.1 255.255.255.255 N/A PC-A NIC 192.168.1.3 255.255.255.0 192.168.1.1 PC-B NIC 192.168.1.4 255.255.255.0 192.168.1.1 Objectives Part 1: Build the Network and Configure Basic Device Settings Part 2: Troubleshoot Static NAT Part 3: Troubleshoot Dynamic NAT Background / Scenario In this lab, the Gateway router was configured by an inexperienced network administrator at your company. Several errors in the configuration have resulted in NAT issues. Your boss has asked you to troubleshoot and correct the NAT errors and document your work. Ensure that the network supports the following: PC-A acts as a web server with a static NAT and will be reachable from the outside using the 209.165.200.254 address.
Lab - Troubleshooting NAT Configurations © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 2of 14PC-B acts as a host computer and dynamically receives an IP address from the created pool of addresses called NAT_POOL, which uses the 209.165.200.240/29 range. Note: The routers used with CCNA hands-on labs are Cisco 1941 Integrated Services Routers (ISRs) with Cisco IOS Release 15.2(4)M3 (universalk9 image). The switches used are Cisco Catalyst 2960s with Cisco IOS Release 15.0(2) (lanbasek9 image). Other routers, switches and Cisco IOS versions can be used. Depending on the model and Cisco IOS version, the commands available and output produced might vary from what is shown in the labs. Refer to the Router Interface Summary Table at the end of this lab for the correct interface identifiers.Note: Make sure that the routers and switch have been erased and have no startup configurations. If you are unsure, contact your instructor. Instructor Note: Refer to the Instructor Lab Manual for the procedures to initialize and reload devices. Required Resources 2 Routers (Cisco 1941 with Cisco IOS Release 15.2(4)M3 universal image or comparable) 1 Switch (Cisco 2960 with Cisco IOS Release 15.0(2) lanbasek9 image or comparable) 2 PCs (Windows 7, Vista, or XP with terminal emulation program, such as Tera Term) Console cables to configure the Cisco IOS devices via the console ports Ethernet and serial cables as shown in the topology Part 1: Build the Network and Configure Basic Device Settings In Part 1, you will set up the network topology and configure the routers with basic settings. Additional NAT-related configurations are provided. The NAT configurations for the Gateway router contains errors that you will identify and correct as you proceed through the lab.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture