Longest Prefix Match (LPM) is the algorithm used in IP networks to forward packets. The algorithm is used to select the one entry in the routing table (for those that know, I really mean the FIB–forwarding information base–here when I say routing table) that best matches the destination address in...
In general I dislike operating load balancers and IP multicast: I’m a network engineer. Load balancers and IP multicast are very complicated, have a large amount of state, and they are hard to understand and debug. They lead to a lot of operational issues and outages. They have directly lead...
I worked at Amazon for 17 years as a network engineer. Now I’m out of Amazon and looking at the industry, I’m learning new things. One of the things I’ve learned recently is that OSPF shouldn’t be used for Clos leaf-spine networks because of scale. I’ve heard that it can’t...
I care a lot about network design. I think it’s too hard to design networks well and I think that all the tools necessary to do it well don’t exist. At least I haven’t seen them. The lack of tools affects the biggest networks, but it affects all networks. I...
Time, time, time, see what’s become of me, while I looked around for my possibilities - Simon & Garfunkel One of the powerful features of Suzieq is the ability to observe the state of the network at a time in the past, or to play back changes in state in...
In this continuing series of posts on Suzieq, we’ll look at 5 questions to which Suzieq can provide answers In the outputs below, the presence of ‘….’ is an indication that I’ve snipped the output for brevity Do I have network virtualization in my network? Are you using network virtualization...
10ish ways to explore your network with Suzieq Suzieq is new software for Network Observability. In this blog I will be going over some of the things you can do with Suzieq to help you explore and understand your network. We have suzieq-data that you can use to investigate Suzieq....
“Observation, not old age, brings wisdom” - Publilius Syrus In the time that we have both collectively spent in the industry, one on the vendor side and the other on the operator side, one of the lasting impressions on both of us is the paucity of tools that a network...