The Local Area Network, or LAN, is more than a physical foundation of modern computer communication. For an entire generation of veteran players, it was their introduction to multiplayer competition, all-night Internet café sessions, and the culture of teaming up with friends. From the first Ethernet sketch drawn on a note at Xerox PARC in the 1970s to Red Alert battles connected by thin coaxial cables in university computer labs and unlicensed Internet cafés in the 1990s, the evolution of LAN physical and protocol layers is itself a battle history of dedicated geeks and multiplayer gamers.
Through the combined lenses of network engineering and gaming archaeology, this article revisits half a century of technological change.
1. The Birth of Ethernet: From Hawaiian Radio to Coaxial Cable (1973)
In 1973, Robert Metcalfe, working at Xerox PARC, drew inspiration from the University of Hawaii's ALOHA radio network protocol to invent Ethernet:
- A tribute to the ether: Metcalfe borrowed the name of the mysterious medium once hypothesized in physics to carry electromagnetic waves, the luminiferous ether, to name a communications network shared by all hosts;
- Bus topology and CSMA/CD collision handling: Early Ethernet connected all computers to the same shared coaxial cable. To resolve signal collisions when two computers transmitted at once, Metcalfe designed the famous Carrier Sense Multiple Access with Collision Detection (CSMA/CD) mechanism. Veteran network administrators knew its engineering rule by heart: listen before transmitting, listen while transmitting, stop on a collision, and back off randomly.
- Establishing the standard: In the 1980s, DEC, Intel, and Xerox jointly published the DIX specification. IEEE subsequently standardized it as IEEE 802.3, establishing the physical foundation of computer networking worldwide today.
2. The Evolution of Physical Cabling: Veteran Administrators' Hard-Won Lessons
To an ordinary player, a network cable is just a plastic lead with a modular plug. For old hands, building an early LAN was an adventure at the physical layer:
| Standard Generation | Physical Cable | Topology | Key Electrical and Hardware Constraints (Veteran Administrators' Memories) |
|---|---|---|---|
| 10BASE5 (thick cable) | Thick coaxial cable, nicknamed the big yellow python | Bus | A maximum segment length of 500 meters, extremely stiff and heavy. A vampire tap had to pierce the jacket and contact the copper core. A slightly misplaced tap could ruin the entire segment. |
| 10BASE2 (thin cable) | RG-58 thin coaxial cable | Bus | Connected through BNC metal bayonet connectors and T connectors, with 50-ohm terminators required at both ends of the bus. If someone in the computer room kicked a connector loose by just a millimeter, the impedance mismatch caused fierce signal reflections. A whole row of a dozen or more computers immediately lost connectivity, followed by a roomful of angry shouting. |
| 10BASE-T / 100BASE-TX | Unshielded twisted pair (UTP) + RJ-45 | Star | A lifesaving invention for network administrators. Combined with hubs and switches, disconnecting one computer or a single-machine failure no longer affected everyone else, and cabling costs plummeted. |
Every veteran geek who lived through that era once carried wire strippers, crimping pliers, a box of gold-plated RJ-45 plugs, and a cable tester in their backpack. Reciting white-orange, orange, white-green, blue, white-blue, green, white-brown, brown, the EIA/TIA 568B wiring order, was the ultimate initiation ritual for an aspiring computer expert.
3. The Twilight of Protocol Stacks: Why Did IPX/SPX Beat Early TCP/IP?
In the era when Windows 95/98 ruled computer labs, TCP/IP, now the dominant protocol, was the junior contender in LAN gaming:
1. The Overwhelming Advantage of Novell NetWare and IPX/SPX
Developed by LAN giant Novell, the IPX/SPX (Internetwork Packet Exchange) protocol became a multiplayer essential because of its remarkable simplicity. There was no need to manually configure complicated IP addresses, subnet masks, or gateways. Plug in a network cable, and the adapter automatically addressed and discovered peers using its MAC address and network number.
The enduring classics of that era, including DOOM, Red Alert 1/2, Duke Nukem 3D, and Need for Speed II, were all built natively around IPX broadcasts. Veteran players' first step upon entering a computer lab was to right-click on the desktop and navigate through "Network Neighborhood -> Properties -> Add Protocol -> Select Novell -> IPX/SPX-compatible Protocol." If they still could not connect, they opened the advanced properties and forced the Frame Type from Auto to Ethernet 802.3 or Ethernet II. Once rooms appeared in the list, the cheers could raise the roof.
2. TCP/IP's Eventual Dominance and Protocol Archaeology
As the World Wide Web exploded and ADSL broadband became widespread, IPX, which lacked wide-area routing capabilities, gradually fell behind. Starting with Windows Vista/7, Microsoft completely removed the IPX protocol stack from the kernel. Bringing those classic games back to life on modern TCP/IP-only networks prompted the later development of wsock32.dll protocol shims and the flourishing of virtual multiplayer platforms.
4. A Legendary Episode: DOOM Takes Corporate Networks Offline Worldwide
In December 1993, John Carmack and John Romero of id Software released the world-changing DOOM:
- Romero first coined the term Deathmatch while debugging DOOM's multiplayer mode;
- DOOM used Layer 2 Ethernet broadcasts to let 4 players compete in a 3D maze. But Carmack's early networking code was unusually aggressive: it broadcast uncompressed raw packets onto the LAN at extremely high frequency. In corporate and university networks still using shared hubs, this directly triggered catastrophic broadcast storms;
- Core switches at leading universities, including Texas A&M, and numerous multinational companies crashed under the barrage of packets. Network administrators were forced to issue some of the world's earliest formal directives prohibiting DOOM.EXE on the LAN during working hours.
5. Closing Thoughts
From crude thin-coax terminators to 100 Mbps switches and Category 5 twisted-pair cable, and now to the modern encrypted P2P virtual LAN built by LanGame OS Orbit, the cables have changed and transfer speeds have doubled. Yet veteran players' desire for pure competition across the two ends of a network cable has never faded over thirty years.