This lab will test your skills, from simple iBGP and eBGP configuration to more advanced filters and route reflectors implementations. Lab must be executed in the shown order, without fast forwarding to the next or jumping tasks. By the [...]
Route maps Route maps have more than one use. For BGP, it is filtering or manipulating prefixes and the associated attributes. The structure of a route map is similar to the one of access control lists. Statements are parsed, [...]
BGP path selection algorithm BGP will only advertise its best path by default. But how does BGP select the best path ? There are some common attributes, such as Cisco own Weight, Local preference and AS path length. But [...]
Route summarisation When a router or AS is advertising several contiguous routes, then instead of announcing all routes, an AS can send one summary route only. In this example, 3 prefixes are advertised by AS100. These can be summarised [...]
Must know Practical BGP will focus on examples based on concrete cases. Through configurations and validation, you should by the end of this document be able to understand how to configure BGP and be familiar with its basics. Before [...]
