Administrative Distance – Only Half the Story

In the image below you can see how each protocol presents itself to the routing table (RIB). The RIB uses AD to determine which route to install. But what about how the protocol chooses which route to present to the RIB?

protocol-rib

Continue reading

Advertisements

How the Internet Died

Tuesday, August 12 and Wednesday, August 13 the internet seems to be hiccuping along and generally less stable than normal. This isn’t the first or evenĀ second time the internet broke on a global level. Due to 10 year old default configuration and business inaction many ISPs and enterprises encountered network outages.

First, some history…

Continue reading