Why Single-Line High-Defense Is Much Cheaper: What You Save on Multi-Line Bandwidth and Cross-Network Redundancy, and Who Pays the Price

Single-line high-defense is cheap mainly because it buys bandwidth from one carrier and skips BGP multi-line routing and redundancy; the savings become cross-network latency for off-network users, who may even be unable to connect during attacks.

BGP High-Defense vs Single-Line High-Defense: Which Is Stronger — Look at Scrubbing Capacity and Whether Users Can Still Access During an Attack

Paper defense peaks are often higher and cheaper on single-line high-defense, but when users are spread across different carriers, BGP high-defense better preserves nationwide access during an attack. This article breaks down "defense capability" into three criteria, gives business-based selection conclusions, and lists what to ask and test during procurement and testing.