Gondwana-1 cable: latency up to 2.6× normal, 6 Oct 2026
What we measured
| Cable | Gondwana-1 |
| Segment | Noumea, NC → Sydney, AU |
| Detected | 2026-10-06 17:02 UTC |
| Resolved | 2026-10-07 01:03 UTC |
| Duration | 8h 1m |
| Observed latency | 22.9 ms |
| Baseline | 24.9 ms · 2.64× |
| Increase | +164% |
| Severity | warning |
Who is affected
Countries where Gondwana-1 comes ashore, how much of their submarine diversity this cable represents, and what our measurements into them show.
| Country | Dependence on this cable | Other submarine cables | What the measurements show |
|---|---|---|---|
| Australia resilience index: 100 · resilient |
1 of 34 cables (3% of submarine diversity) | APX East, Asia Connect Cable-1 (ACC-1), Australia-Japan Cable (AJC) +30 more | median 193 ms today vs 254 ms over 30 days (474 routes) - faster |
| New Caledonia resilience index: 76 · resilient |
1 of 4 cables (25% of submarine diversity) | Gondwana-2/Picot-2, Picot-1, Tamtam | average 15 ms over the last day vs 40 ms over 30 days - faster |
Dependence is structural (share of the country's submarine cables), not a traffic share: real traffic distribution across cables is not public.
Path analysis
Traffic kept the same route. Latency rose without a visible path change, which points at congestion or a fault on the existing route rather than a reroute.
Cross-probe verdict. Other measurements did not confirm the event. We treat this as a probable false positive and label it as such.
Timeline
- Alert 2026100602: warning - ratio 2.64x
- Alert #219 improving: 1/3 consecutive OK
- Alert #219 improving: 2/3 consecutive OK
- Alert #219 resolved: RTT 22.87ms (baseline 24.93ms), 3 consecutive OK
Detection method
Latency is sampled continuously from our probe network. An alert opens when round-trip time to a monitored endpoint holds above its rolling baseline, and closes automatically once it returns. Full method is described on the methodology page.