Tag: ccnp-route
BGP Synchronization
Scenario: You are a freelance network consultant specialized in solving BGP problems. One of your customers, a small ISP has trouble with customers that are unable to reach each other. They use BGP synchronization on some of their…
Read More »BGP Next-Hop Self Manual
Scenario: As a junior networking engineer you were always fascinated with science fiction movies, that’s why you are now working at a company specialized in special effects. The closest you got to light speed was sending bits and…
Read More »OSPF per Neighbor Cost
Scenario: The local fish trading market needs your help with their OSPF network. It seems their routers are unable to change the bandwidth or cost on the interfaces so you need to use another solution to influence OSPF…
Read More »OSPF Auto Cost Reference Bandwidth
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…
Read More »OSPF DR BDR Election
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…
Read More »EIGRP Timers
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…
Read More »EIGRP Summarization without Null0
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…
Read More »EIGRP Router ID
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…
Read More »Recursive Routing Failure
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…
Read More »Floating Static Routes
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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