Tag: ccnp-rs

OSPF Auto Cost Reference Bandwidth

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Scenario: The new muppet movie is almost finished. All the actresses prefer to have a dedicated internet connection in their trailers at the movie park. You configure a couple of routers with Gigabit and FastEthernet interfaces. Unfortunately OSPF…

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OSPF DR BDR Election

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Scenario: You end up working as one of the network engineers for a nuclear powerplant located in a cartoony looking town. OSPF is being used as the IGP routing protocol but there have been some problems with the…

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EIGRP Timers

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Scenario: You are the network engineer for a fairly large international operating company.  One of the trainees in the company is studying for his CCNA and decided to practice on some of the company routers. EIGRP is now…

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EIGRP Summarization without Null0

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Scenario: You are applying for a job as a senior network engineer at a large ISP. They heard you passed your CCIE so they want to test you by giving a topology with an EIGRP summarization question. Let’s…

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EIGRP Router ID

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Scenario: Your colleague asks for your help with a strange EIGRP problem. He redistributed a network into EIGRP but for some reason it doesn’t show up in the routing table of one of the routers. You verify the…

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Recursive Routing Failure

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Scenario: You work as the network engineer for a company with an ambitious plan to build a tunnel between Japan and Australia. To support this project you have to configure the network with some new routers. You configure…

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Floating Static Routes

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Scenario: While you are drifting on a inflatable bed at your swimming pool you fall asleep and dream about floating static routes. There’s this issue at work you couldn’t solve but sometimes the best ideas arrive in your…

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Longest Prefix Match Routing

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Scenario: The local matchstick factory needs your help. They added another link between their routers but now everything is being load balanced between the serial and FastEthernet interface. They want to make sure everything is sent down the…

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Frame Relay Multipoint Subinterface

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Scenario Most toons from the fairy tale forest have switched their career to become network engineers. Cinderella has been trying to reach Hansel and Gretel through the frame relay network but hasn’t had any luck. Think you can…

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Frame Relay Point to Point Subinterface

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Scenario Most toons from the fairy tale forest have switched their career to become network engineers. Cinderella has been trying to reach Hansel and Gretel through the frame relay network but hasn’t had any luck. Think you can…

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