Tag: bgp

BGP Fast Fallover

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Scenario: Kendrick and Scott are using BGP to exchange routing information. Unfortunately the link that connects both routers isn’t that reliable. Everytime it goes down it also tears down the BGP peering…let’s see if you can prevent that!…

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BGP Timers

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Scenario: You are a film producer and parttime network engineer. You use BGP to connect two sites to each other but you feel things are a little slow. Let’s see if you can tune up some of those…

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BGP Remove Private AS

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Scenario: The imperial museum corporation has many museums around the world. All networks are connected and BGP is used as the routing protocol. One of the autonomous systems is a transit AS and has two autonomous systems behind…

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BGP Local AS

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Scenario: The local hedgehog protection foundation is merging with the local Fox protection program. The networks are connected through BGP and part of the migration means you have to change your AS number. You don’t mind doing this…

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BGP Filtering Maximum Prefix

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Scenario: The national hedgehog protection foundation needs your help with their network. They are using BGP for their International networking but the router they are using is a bit old and doesn’t take many prefixes in its BGP…

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BGP Communities Delete and Additive

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Scenario: Mushroom Kingdom is stronger than ever before. Some of the citizens have switched their career to become network engineers specializing themselves in BGP. One of the moustached network engineers is sending some communities values along with prefixes…

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BGP Communities Local-AS

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Scenario: The company you work for is a large game console development company. They have a large international network and you are responsible for the BGP configuration. One of the ASes is so large that you decided to…

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BGP Communities No-Export

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Scenario: As the owner of a small dutch ISP you like to configure some of the networking stuff yourself. For one of your customers you have to make some changes to the network. They want to advertise their…

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BGP Communities No-Advertise

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Scenario: As the owner of a small dutch ISP you like to configure some of the networking stuff yourself. For one of your customers you have to make some changes to the network. They want to advertise their…

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BGP Communities

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Scenario: You are working on a small network of a ISP located in Germany. One of your colleagues is sending you prefixes tagged with communities. He’s telling you to match on those communities and change your routing policy…

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