Category: Networking


  • 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

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  • Multi-Platform Multicast Flow Testing Utility in C

    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

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  • 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

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