Affordable network setup for fast LAN-party updates across 32 PCs
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MellowCedar42
I'm helping run a small business LAN-party setup with 32 systems arranged in four banks of eight. We frequently need to distribute terabytes of game updates and other data, while also maintaining the venue's internet connection. Our current switches are unmanaged, and some network cards occasionally fall back to 10 Mbps. Transfers take a long time and the internet becomes sluggish, so I suspect the switching setup or uplinks may be overloaded. What affordable switch layout and hardware would you recommend?
Answers
For a lower-cost build, look at MikroTik, TP-Link, or similar switches with 2.5 Gb access ports and 10 Gb uplinks. Even an inexpensive 8-port 10 Gb switch can help with small groups, provided the uplinks and the file/cache server are fast enough. The important part is avoiding a single 1 Gb bottleneck between several switches and the update source.
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A local caching server is probably the biggest improvement. Put the cache on at least a 10 Gb connection, use a 10 Gb switching backbone, and connect the gaming PCs at 2.5 Gb where their network adapters support it. The cache prevents all 32 machines from downloading identical updates over the venue’s internet connection at the same time. If the PCs only have 1 Gb networking, that can still work; the main benefit comes from avoiding repeated internet downloads.
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Before assuming the switches are the only problem, check the source server and cabling. A 1 Gb connection should still provide a reasonable transfer rate for many workloads, and slow disks or high read latency on the file server can easily become the bottleneck. Stacking two 24-port switches is also a practical approach: it gives you enough ports and some resilience if one unit fails.
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Move to managed switches and use a hub-and-spoke layout if possible. Give each access switch a fast uplink—ideally 10 Gb—and place systems that exchange large files on the same switch when you can. A ring can work with 10 Gb links, but it is more fragile because one failed link can disrupt the whole chain. If 10 Gb is too expensive, link aggregation can provide more capacity between switches. Managed hardware will also let you monitor errors, negotiated speeds, and congestion.
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Used enterprise gear can offer good value. Older Cisco 3650-class switches commonly have 1 Gb access ports and 10 Gb uplinks, while used Juniper EX2300s are another option. For a higher-bandwidth setup, some second-hand Arista switches provide 10 Gb copper ports, though you should check power draw, noise, licensing, and compatibility before buying.
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MellowCedar42: I’m in the UK, so availability and shipping may make some of the used Cisco options harder to source, but I’ll check the local second-hand market.