>"You have the gist I would say. It's important to understand that Google separates the control plane and data plane, so if you think of the internet, routing tables and bgp are the control part and the hardware, switching, and links are data plane. Often times those two are combined in one device. At Google, they are not."
That's pretty much the definition of SDN(software defined networking.) The control plane is what programs the data plane - this is also true in traditional vendor routers as well. It sounds like when whatever TTL was on the forwarding tables(data plane) was reached the network outage began.
That's pretty much the definition of SDN(software defined networking.) The control plane is what programs the data plane - this is also true in traditional vendor routers as well. It sounds like when whatever TTL was on the forwarding tables(data plane) was reached the network outage began.