Packets

Four ways to look at a packet.

Bit FormOne HTTP GET packet as a treemap. Field area proportional to bit count.Goes Around, Comes AroundOSI layers peel off one by one. Encapsulation, ARP, routing, arrival.SituationsPick a protocol, see its packet structure. OSPF vs IS-IS, HTTP/1 vs 3, BGP, MPLS.JourneyStep through a packet crossing Kubernetes nodes. Flannel, Calico, Cilium.