Cisco Packet Tracer 5.1 Full
Tutorial Greetings, and welcome to Seeseenayy. Lets jump right in, boys and girls. Following the instructions, we open up R1 and apply the configuration to adjust both the hello and dead timers on the routers. As the instructions dictate, enter the following: R1en R1#conf t R1(config)#int S0/0/0 R1(config-if)#ip ospf hello-interval 15 R1(config-if)#ip ospf dead-interval 60 R1(config-if)#exit R1(config)# After a certain amount of time, the OSPF connection between R2 (and R1) will fail. Why does this happen? Simple; both sides of the OSPF-configured devices must match the same timer variables. Meaning, since we changed R1's hello and dead timer variables values, the link cannot function correctly.
Like said, the links fail. If you fast-forward twice and look in R1's CLI, you'll see this error message: 00:03:30:%OSPF-5-ADJCHG: Process 1, Nbr 209.165.200.225 on Serial0/0/0 from FULL to DOWN, Neighbor Down: Dead timer expired This is fine. Everything is fine. Continuing, we must edit the bandwidth value of the S0/0/0 interface. The command is oh so very complex, see below: R1(config)#int S0/0/0 R1(config-if)#bandwidth 64 Note that the bandwidth command doesn't edit the actual port speed, but rather edits the metric that OSPF uses to calculate routes. (A slower bandwidth makes for a worse route, rule of thumb.) The instructions wants you to take note that the traffic from PC1 to the Server (top-right-corner) will traverse through R3 in place of the other route.
Open R1 again, now we're going to edit the authentication of OSPF. The instructions tells us what these commands are.
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Packet Tracer supplements classroom equipment and provides students complementary learning opportunities that are not physically possible to create in the classroom or lab. Packet Tracer 5.1 offers a unique combination of realistic simulation and visualization experiences.