The Solana blockchain narrowly avoided a transaction finality halt after an internet routing error briefly disconnected approximately 28.8% of active staked tokens. The incident stemmed from a network misconfiguration at infrastructure provider TeraSwitch, taking 90 validators offline for about 33 minutes. Because Solana requires at least two-thirds of staked assets to finalize blocks, the outage highlighted growing concerns regarding validator concentration and backup readiness across the network.
The Solana blockchain network came close to a transaction finality freeze after an internet routing error knocked nearly 29% of its active staked tokens offline.
The technical disruption left the network within a narrow margin of its critical operational threshold, where irreversible block finalization stops if more than one-third of active validator stake becomes unresponsive.
Data provided by liquid staking platform Marinade Finance revealed that the incident began when internet infrastructure provider TeraSwitch experienced a routing misconfiguration originating from its Miami facility. An improper network advertisement was distributed across international route reflectors, severing connectivity for edge routers across 12 key data center locations in Europe and Asia, including hubs in London, Amsterdam, Frankfurt, Singapore, and Tokyo.
The routing failure affected approximately 90 network validators, causing roughly 28.8% of total staked SOL to go delinquent simultaneously. Under Solana’s core consensus rules, block finality requires consensus from at least 66.67% of active stake. Had delinquent stake reached 33.34%, the network would have experienced a “finality halt,” preventing transactions from settling permanently.
TeraSwitch identified and corrected the routing error within roughly 10 minutes. However, full restoration of validator connectivity took about 33 minutes as nodes re-established network paths. While block production continued and the chain did not suffer a total shutdown, affected validators missed out on an estimated 333 SOL in staking rewards during the outage.
The episode has renewed debate surrounding infrastructure concentration and operational redundancy within major decentralized networks. Reports indicated that a single network operator host accounted for over a quarter of Solana’s total staked balance, creating a centralized point of failure when its connectivity dropped.
Additionally, automated failover systems for several major node operators failed to activate during the event, leaving validators offline for the entire duration of the routing glitch. Staking protocols have announced plans to review concentration limits and evaluate how validators manage data center backups to minimize future network risks.
While Solana’s core network avoided a state freeze, the routing failure highlights the operational risks linked to data center hosting dependencies. As network contributors analyze the event, industry observers expect stricter requirements for validator geographic distribution and secondary backup protocols to prevent similar vulnerabilities in the future.
