Understanding Network Throughput Planning
When engineers design network topologies, one of the most critical failure points isn't the edge-port capacity, but the Uplink Bottleneck. A standard 24-Port Switch might connect to 24 Gigabit devices, but if that switch routes back to the core via a single Gigabit SFP port, it presents a massive congestion risk.
The Network Bandwidth Calculator allows you to model continuous-strain payloads (like IP Camera feeds or VoIP calls) and visualize exactly how much of your switch's uplink pipe will be saturated 24/7.
Continuous Load vs. Burst Traffic
Burst Traffic (Computers)
Typical office PCs perform "burst" networking. When a user opens a webpage or downloads a file, it floods the wire for a fraction of a second, then goes completely silent. You can comfortably put 40+ PCs on a Gigabit link because they rarely burst simultaneously.
Continuous Load (CCTV/Media)
IP Cameras, specifically in security arrays, generate a constant, unforgiving stream of traffic (e.g. `8 Mbps` continuously per camera). If you connect 100 cameras, that is `800 Mbps` of unyielding throughput. A standard `1 Gbps` fiber uplink would be at 80% saturation constantly, severely impacting latency.
Uplink Upgrade Best Practices
The 70% Rule
Network architects generally try to keep continuous baseline traffic under 70% of the physical link capacity. This leaves 30% overhead for routing protocols (OSPF, BGP), management traffic, and sudden traffic spikes triggered by network events (like high-motion alarms on all cameras simultaneously).
When do I need 10 Gigabit (SFP+)?
If your aggregated continuous load eclipses ~700 Mbps on a standard Gigabit link, you should immediately consider migrating the switch backbone to `10 Gbps SFP+` fiber, or implementing Link Aggregation Groups (LAG) combining multiple 1G ports via LACP.