Tag: ospf
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 »OSPF Virtual Link
Scenario: You are a freelance network engineer specialized in routing and switching. One of your customers (a local butcher) has some trouble setting up their OSPF network. Some of the networks are not reachable and it’s up to…
Read More »OSPF Authentication
Scenario: The local zoo needs your help with their OSPF network. Since a recent animal breakout the security department decides all routing protocols need authentication. You decide to implement OSPF authentication in any way you can. Goal: All…
Read More »OSPF LSA Type 5 summarization
Scenario: As the junior network engineer for a large cartoon network you are asked to look at the OSPF configuration of the network. Some external networks are redistributed into OSPF and your boss asks you if you can…
Read More »OSPF LSA Type 3 summarization
Scenario: The mineral express is specialized in trading expensive minerals. You are their senior network engineer and responsible for the OSPF network that they have running. One of your colleagues is complaining that the routing table is becoming…
Read More »OSPF CCNA 1
Scenario: During the day you are working as a junior network engineer studying CCNA. During the night you are active as a respectable fighter and many of your matches are recorded on video. Some of your fans have…
Read More »OSPF RIP Redistribution AD Troubleshooting
Scenario: Recently the australian government has decided that every major City should be interconnected. So far different states have used their own routing protocol and some of the older hardware is unable to run OSPF. Government workers have…
Read More »MPLS VPN PE CE using OSPF & Sham-Link
Scenario: You have been dreaming of starting your own ISP for years and now the moment is finally here. You bought a couple of brand new routers and you are about to implement your MPLS backbone. Your first…
Read More »OSPF Troubleshooting
Scenario: After months of hard work, studying and doing labs you have the feeling you truly know how routing protocols work. Your boss decides to upgrade your salary and your title from Trainee to Junior network engineer and…
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