R1 config ip name-server The error message helps us again. First, we forgot to remove the incorrect DNS server entry.
Fix that first. R1 config no ip name-server R1 telnet R3 sh run Building configuration Time to test it from R1 again. We try telnet to port 53 first. Open [Connection to The final check is to verify by pinging by FQDN. Problems in the real world are usually caused by just one error rather than three as in this case. This can still occur though, particularly when a new service is being deployed.
Verify the speed and duplex setting. Leave the settings as they are on R2. What is the status of the interface? Method Status Protocol Vlan1 It will not forward traffic. You will also perform an IOS upgrade on a Cisco switch. Use Cisco Packet Tracer for this exercise. Factory Reset 1 View the running configuration on R1. Note that the hostname and interface have been configured 2 Factory reset R1 and reboot 3 Watch the boot up process as the router boots 4 The router should boot into the Setup Wizard.
Exit out of the wizard and then confirm the startup and running configurations are empty. In a real world scenario you would enter the Break sequence on the keyboard when first powering up the router to access the rommon prompt 8 Configure the router to ignore the startup-config when booting up, and reload the router 9 The router should boot into the Setup Wizard.
Exit out of the wizard 10 What do you expect to see if you view the running and startup configurations? Confirm this. Do not miss this step or you will factory reset the router! Use a suitable name for the backup file. Verify the configuration has been backed up.
Recover the system image using the TFTP server. You have completed this part of the lab once you have entered the tftpdnld command. Note that the hostname and interface have been configured. R1 sh run Building configuration R1 config-if line con 0 R1 config-line exec-timeout 30 0 R1 config-line end R1 copy run start Destination filename [startup-config]? In a real world scenario you would enter the Break sequence on the keyboard when first powering up the router to access the rommon prompt R1 config config-register 0x R1 config end Router copy start run R1 reload Proceed with reload?
Exit out of the wizard System Configuration Dialog Continue with configuration dialog? The running configuration should be empty because the router bypassed loading the startup config on boot up. The startup config should remain unchanged and all previous configuration should still be there.
Router sh run Building configuration Router copy start run Destination filename [running-config]? R1 copy run flash Destination filename [running-config]? Backup-1 Building configuration R1 copy start tftp Address or name of remote host []? Backup-2 Writing startup-config!! Writing cuniversalk9-mz.
R1 delete flash:cuniversalk9-mz. The system is unable to boot automatically. The BOOT environment variable needs to be set to a bootable image.
Do you wish to continue? This is as far as we can go with this part of the lab. Loading clanbasek9-mz. You will also examine the effect of longest prefix match routing. Verify this. Do not configure R5. If so, which path will the traffic take? Achieve this with a single command. Note that the lab does not actually have Internet connectivity.
The ping went via R1 at R1 config ip route Summary Routes 11 Remove all the static routes on R1 R1 config no ip route A summary route to The summary route on R1 to A ping from PC1 to Add a summary route on R5 for all the directly connected networks on R1.
R5 config ip route R5 traceroute This shows that routers make independent decisions based on their routing table and it is possible though not common for return traffic to take an asynchronous path. A route from R1 to the R1 config ip route 0. Add an additional default route on R1 to send Internet traffic via R5. R4 config ip route Basic configuration for various IGPs is included but is not the focus of this lab exercise.
Configuration for each of the IGPs will be covered in detail later. Observe the updates being sent and received. What kind of traffic is used unicast, broadcast or multicast? What is different between it and the RIP database? R5 config no router rip R5 config no router eigrp 27 Configure the network so that there is still connectivity between all subnets if the link between R1 and R2 goes down.
Accomplish this with six commands. R5 config router eigrp R5 config-router no auto-summary R5 config-router network Assign the IP address R1 config router eigrp R1 config-router network The updates are being sent on the broadcast address All hosts on the subnet must process the packets. The updates are being sent on the RIPv2 multicast address Only RIPv2 routers will process the packets beyond layer 3.
Two paths to Both routes are installed in the routing table and the router will perform Equal Cost Load Balancing between the next hops of R1 show ip rip database OSPF uses cost as its metric which takes into account interface bandwidth. The interfaces on R5 have a configured bandwidth of 10Mbps.
The interfaces along the top path of the network topology all have the default FastEthernet bandwidth of Mbps so this route is preferred. All traffic will go via the next hop OSPF will reconverge. The routes to the The new routes have a higher metric. This is why they were not in the routing table when the path via R2 was up. RIP is a Distance Vector routing protocol so it only knows its directly connected neighbors and the lists of networks those neighbors have advertised.
OSPF is a Link State routing protocol so it knows the state of every link on every router in its area. A hop count of 2. A composite metric of EIGRP uses a composite metric which takes into account interface bandwidth and delay. These routes would normally be preferred to the route learned via EIGRP because static routes have a better Administrative Distance of 1 by default. It is required to prevent the floating static routes from being preferred when EIGRP is enabled in the future however.
Summary routes need to be used to accomplish the task in six commands. R1 config interface loopback0 R1 config-if ip address There is no connectivity from the PCs to the loopback interfaces because they are not in the routing tables of the routers apart from the local loopback interface on each router. The loopback interfaces are not in the routing tables because they are in the Configuring the loopback interface as a passive interface on R1 does not affect any routing tables but is a best practice.
Connectivity is down. Traceroute is making it as far as We need to add a static route for the R3 config ip route R1 config ip sla 1 R1 config-ip-sla icmp-echo Ensure all networks except Do not perform any summarisation. Verify this give the routing table a couple of minutes to converge. Internal routes must not advertised to the Service Provider at On every router: R1 config router rip R1 config-router version 2 R1 config-router no auto-summary R1 config-router network Configure summarisation in both directions on the R2 and R5 routers.
R4 will have a It will not load balance traffic through R2 as well because that path would have a hop count of 2. R4 is not directly adjacent to R2 as R1 is, it is an extra hop away. Internal routes must not be advertised to the Service Provider at The Inject the default static route into RIP on R4. Check the current timers first. Use the IP address For example Verify this give the routing table a few seconds to converge.
Successors and Feasible Successors 11 There are two possible paths which R1 could use to reach the Which route is in the routing table? Change this to go via R2 instead. The path via R5 must be a Feasible Successor. Default Route Injection 18 Ensure that all routers have a route to the On every router: R1 config router eigrp R1 config-router network R1 config interface loopback0 R1 config-if ip add The Router ID is The Router ID will change to the Loopback address It will not load balance traffic through R2 as well because that path would have a higher metric.
Individual routes for all networks will be restored in the routing tables. The path via R5 at All interfaces have a delay of usec. Note you could alternatively reduce the delay on the links via R2.
Ping the Washington host from Dublin. If this was not successful troubleshoot as necessary. Once the previous steps are completed, log off by typing exit and turn the router off. Then remove and store the cables and adapter. If prompted for a password, enter class. If that does not work, ask the instructor for assistance. Router erase startup-config The responding line prompt will be: Erasing the nvram filesystem will remove all files! Router reload The responding line prompt will be: System configuration has been modified.
The responding line prompt will be: Proceed with reload? In the first line of the response will be: Reload requested by console.
After the router has reloaded the line prompt will be: Would you like to enter the initial configuration dialog? Press Enter. Now the router is ready for the assigned lab to be performed. This will identify what type and how many interfaces the router has. There is no way to effectively list all of the combinations of configurations for each router class. What is provided are the identifiers for the possible combinations of interfaces in the device.
This interface chart does not include any other type of interface even though a specific router may contain one. The string in parenthesis is the legal abbreviation that can be used in IOS command to represent the interface.
Lab 2. Washington copy running-config startup-config Destination filename [startup-config]? Open navigation menu. Close suggestions Search Search. User Settings. Skip carousel. Carousel Previous. Carousel Next. What is Scribd? Explore Ebooks. Bestsellers Editors' Picks All Ebooks. Explore Audiobooks. Bestsellers Editors' Picks All audiobooks. Explore Magazines. Editors' Picks All magazines. Explore Podcasts All podcasts. Difficulty Beginner Intermediate Advanced.
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