Category: Tech
-
IPv4 and MAC Address Mapping
Brief Overview As we have all learned from our CCNA studies, unicast traffic flows over destination-based routes. If a sender transmits to a receiver within the same VLAN, traffic is frame-forwarded to the receiver. If the sender does not have the receiver’s corresponding MAC address, an ARP request that contains the packet encapsulated in a
-
Midnight Rendezvous with Telix: Musings of a BBS Junkie
It was one school night in Spring 1992–hell, it could have been any given evening from 1992 to 1999. I lived, breathed, ate and shat anything DOS and BBS-related. I was obsessed with pirating as much commercial software as my humble 120MB hard drive and massive floppy, Zip disk and tape libraries could store. It’s
-
Multi-Platform Multicast Flow Testing Utility in C
After completing a really fun and challenging project involving multicast flow between AWS EC2 cloud instances and bare-metal servers at a datacenter in the UK, there arose a need to be able to test out multicast connectivity between different nodes, in any direction. Rather than have to rely on developers to get their applications installed
-
AWS ⇆ Bare Metal Multicast Flow with GRE Tunnel Overlay
As part of a crypto trading platform that was recently deployed between my trading firm and its partner company in Brazil, I was tasked with a nice little challenge of making multicast data flow between AWS EC2 instances and bare metal at our UK datacenter. AWS is notoriously convoluted as a black box of technology
brodieworld 