MPLS 101 – Dynamic routing with BGP
In our last post we talked about how to make the MPLS control plane more dynamic by getting rid of static LSPs and adding in LDP to help advertise and distribute LSPs to all MPLS speaking routers. However – even once got LDP up and running, we still had to tell the routers to use a given LSP. In the last post, we accomplished this by adding recursive static routes in the inet.0 table to force the routers to recurse to the inet.3 table where the MPLS LSPs lived. In this post, we’re going to tackle getting rid of the static routes and focus on replacing it with a dynamic routing protocol – BGP.
So to start off with, let’s get our lab back to a place where we can start. To do that, we’re going to load the following configuration on each router show in the following lab topology…
interfaces {
ge-0/0/0 {
enable;
unit 0 {
family inet {
address 10.2.2.0/31;
}
}
}
ge-0/0/1 {
enable;
unit 0 {
family inet {
address 10.1.1.0/31;
}
family mpls;
}
}
lo0 {
unit 0 {
family Continue reading
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