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Multi-faceted failure mode. 0) At the network terminal level (mobile phone): at least for emergency calls if a given network fails to connect, fail over and tr
by mjevans 3y ago
Multi-faceted failure mode.
0) At the network terminal level (mobile phone): at least for emergency calls if a given network fails to connect, fail over and try other networks. Even if the preferred networks claim to provide service.
1) At the network level: failure thresholds should be present. If those thresholds are crossed enter a fail-safe state. This should include entering a soft offline / overloaded response state.
2) Where possible critical data paths should cross-route. Infra Command and Control and Emergency calls in this case. Though if Roger's issue was expired certs or something the plans for handling that get complicated.
- Scoundreller 3y agoit’s that “0” level that surprised me the most here. Days later, Rogers said you might be able to pull out/disable your SIM card to call 9-1-1, but then it depends: if Rogers is the strongest network, you might end up in the same predicament anyway.
- mjevans 3y agoAgreed, 'zombie state' is a valid failure mode. Partners / Infra can think they're alive and respond but be non-functional. As can agents spoofing valid infra but always failing operations.