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BGP Remove Private AS
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…
Read More »BGP Local AS
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…
Read More »BGP Filtering Maximum Prefix
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…
Read More »BGP Communities Delete and Additive
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…
Read More »BGP Communities Local-AS
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…
Read More »BGP Communities No-Export
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…
Read More »BGP Communities No-Advertise
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…
Read More »BGP Communities
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…
Read More »BGP Aggregation AS SET
Scenario: You work for a large Dutch webdevelopment company as the senior network engineer. Some of the sites are connected to each other through BGP. One of the network engineers in Hoofddorp has created a summary which aggregates…
Read More »BGP Aggregation Unsuppress Map
Scenario: John and Jim are setting up their own ISP and start by configuring BGP between their routers. Because they want to make sure not to advertise too many prefixes they want to configure BGP aggregation. It’s up…
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