JJ Garcia is Distinguished Professor of Computer Science and Engineering and Jack Baskin Endowed Chair of Computer Engineering at USC Santa Cruz. He first became involved in packet networks in the 1980’s, eventually inventing the Diffusing Update Algorithm (DUAL), which later became the basis for the Enhanced Interior Gateway Protocol (EIGRP). You can find more information about Dr. Garcia at his personal page.
A reader recently emailed me with this question: Why isn’t the condition for a Feasible Successor set to less than (B. D will immediately reroute to the FS, which is C, without changing the FC. This works, because C’s cost to 100::/64 via D is 4, much higher than it’s cost to 100::64 along C->A.…
Reading a paper to build a research post from (yes, I’ll write about the paper in question in a later post!) jogged my memory about an old case that perfectly illustrated the concept of a positive feedback loop leading to a failure. We describe positive feedback loops in Computer Networking Problems and Solutions, and in…
In episode 5 the Network Collective panel dives deep into the inner-workings of EIGRP and how to tune the protocol to work best for you. This isn’t your run of the mill EIGRP training session though, so buckle up and dig in to learn a lot about a protocol which appears pretty straight forward on…