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“ Lufthansa said construction work on a rail line in Frankfurt was to blame for the massive IT failure,. ” No, Lufthansa not having sufficient resilience was t

“ Lufthansa said construction work on a rail line in Frankfurt was to blame for the massive IT failure,. ” No, Lufthansa not having sufficient resilience was to blame.

davidkuennen 4y ago
I'm from Germany and it's really crazy to think just one cable is holding almost the entirety of our flight system. Hopefully they fix it until next Monday. I'm having a flight to Frankfurt then.
- jessekv 4y ago
  > fix it until next Monday Off topic, sorry. I'm curious why Germans often use this phrasing. Is there a "false friend" [1] in English? (I assume you mean 'before', not 'until') 1. https://en.m.wikipedia.org/wiki/False_friend https://en.m.wikipedia.org/wiki/False_friend
  - toast0 4y ago
    Before and until are sometimes interchangable in English. Don't go there before Monday. Don't go there until Monday. You can get this deal until Monday. You can get this deal before Monday. (Some lack of clarity about whether the offer is valid on Monday with until though) But I agree, it doesn't work in this context. English is weird.
  - cjpearson 4y ago
    In English one would use 'by' for a deadline and 'until' when the state or action continues up to a point. e.g. "I must finish the task by the end of the day" or "I'll be working on the task until the end of the day". In German 'bis' is used for both cases.
  - trunc8 4y ago
    To continue the tangent, I'm currently learning Spanish and appreciate the really long tail involved in language learning. I often work with people who, while they do not speak English as their first language, speak it pretty much perfectly. Except for maybe a few minor "glitches", which would just never occur with a native speaker. I often wonder how pointing these out would be received, and though I presume many would be appreciative, maybe not all...
    - midasuni 4y ago
      The order of adjectives in English is something you never think about, but unless you put them in a very specific order you sound crazy https://dictionary.cambridge.org/grammar/british-grammar/adjectives-order https://dictionary.cambridge.org/grammar/british-grammar/adj...
- sschueller 4y ago
  It should not take too long to resplice all those ribbon fibers unless the site is difficult to get too the armed cable is in worse shape than just a cut.
toast0 4y ago
Unfortunately, it's very difficult to determine the path of redundant fiber without a backhoe. It is incredibly common for multiple fiber bundles to have a shared path, because it's often easier to locate another bundle in the same place. Fiber is often laid along rail lines because rail lines have the perfect property shape for communication, and there's specialty train cars that make laying fiber alongside the rail really efficient.
- bogomipz 4y ago
  >"Unfortunately, it's very difficult to determine the path of redundant fiber without a backhoe." No, it's not. Metro Fiber links are designed and deployed in a ring topology for exactly this reason. See: https://www.fiber-optic-tutorial.com/tag/dwdm-ring-topology https://www.fiber-optic-tutorial.com/tag/dwdm-ring-topology
  - toast0 4y ago
    Designed, sure. Deployed? All I can say is the number of incidents where everyone was assured that the fiber strands were independent, but in actuality they weren't is a lot more than zero. It's really easy for a vendor to claim that there's no point at which a single backhoe can take out two of the A/B/C/D/E paths in your diagram. It's also pretty easy to buy dark fiber from two different vendors that are reselling in the same bundle or have their bundles placed in the same conduit.
    - bogomipz 4y ago
      Wrong. When you build a customer a Metro fiber circuit, the ring is already built, often years before. You simply pull wavelengths out of the fiber and drop them off at at the meet-me room in the POP. Source: I used to do this. >"It's also pretty easy to buy dark fiber from two different vendors that are reselling in the same bundle or have their bundles placed in the same conduit." Wrong again. If you are purchasing an IRU on dark fiber you know exactly who owns the physical assets. If you are purchasing wavelengths from a reseller they will happily disclose whose network they are reselling. Additionally you can request the CLR/DLR for your circuit and see exactly how it's built. You can also easily avoid resellers and not worry at all about this. Lastly you seem to not understand the difference between long haul and metro fiber.

“ Lufthansa said construction work on a rail line in Frankfurt was to blame for the massive IT failure,. ” No, Lufthansa not having sufficient resilience was to blame.

davidkuennen 4y ago

I'm from Germany and it's really crazy to think just one cable is holding almost the entirety of our flight system. Hopefully they fix it until next Monday. I'm having a flight to Frankfurt then.

jessekv 4y ago
> fix it until next Monday Off topic, sorry. I'm curious why Germans often use this phrasing. Is there a "false friend" [1] in English? (I assume you mean 'before', not 'until') 1. https://en.m.wikipedia.org/wiki/False_friend https://en.m.wikipedia.org/wiki/False_friend
- toast0 4y ago
  Before and until are sometimes interchangable in English. Don't go there before Monday. Don't go there until Monday. You can get this deal until Monday. You can get this deal before Monday. (Some lack of clarity about whether the offer is valid on Monday with until though) But I agree, it doesn't work in this context. English is weird.
- cjpearson 4y ago
  In English one would use 'by' for a deadline and 'until' when the state or action continues up to a point. e.g. "I must finish the task by the end of the day" or "I'll be working on the task until the end of the day". In German 'bis' is used for both cases.
- trunc8 4y ago
  To continue the tangent, I'm currently learning Spanish and appreciate the really long tail involved in language learning. I often work with people who, while they do not speak English as their first language, speak it pretty much perfectly. Except for maybe a few minor "glitches", which would just never occur with a native speaker. I often wonder how pointing these out would be received, and though I presume many would be appreciative, maybe not all...
  - midasuni 4y ago
    The order of adjectives in English is something you never think about, but unless you put them in a very specific order you sound crazy https://dictionary.cambridge.org/grammar/british-grammar/adjectives-order https://dictionary.cambridge.org/grammar/british-grammar/adj...
sschueller 4y ago
It should not take too long to resplice all those ribbon fibers unless the site is difficult to get too the armed cable is in worse shape than just a cut.

toast0 4y ago

Unfortunately, it's very difficult to determine the path of redundant fiber without a backhoe. It is incredibly common for multiple fiber bundles to have a shared path, because it's often easier to locate another bundle in the same place. Fiber is often laid along rail lines because rail lines have the perfect property shape for communication, and there's specialty train cars that make laying fiber alongside the rail really efficient.

bogomipz 4y ago
>"Unfortunately, it's very difficult to determine the path of redundant fiber without a backhoe." No, it's not. Metro Fiber links are designed and deployed in a ring topology for exactly this reason. See: https://www.fiber-optic-tutorial.com/tag/dwdm-ring-topology https://www.fiber-optic-tutorial.com/tag/dwdm-ring-topology
- toast0 4y ago
  Designed, sure. Deployed? All I can say is the number of incidents where everyone was assured that the fiber strands were independent, but in actuality they weren't is a lot more than zero. It's really easy for a vendor to claim that there's no point at which a single backhoe can take out two of the A/B/C/D/E paths in your diagram. It's also pretty easy to buy dark fiber from two different vendors that are reselling in the same bundle or have their bundles placed in the same conduit.
  - bogomipz 4y ago
    Wrong. When you build a customer a Metro fiber circuit, the ring is already built, often years before. You simply pull wavelengths out of the fiber and drop them off at at the meet-me room in the POP. Source: I used to do this. >"It's also pretty easy to buy dark fiber from two different vendors that are reselling in the same bundle or have their bundles placed in the same conduit." Wrong again. If you are purchasing an IRU on dark fiber you know exactly who owns the physical assets. If you are purchasing wavelengths from a reseller they will happily disclose whose network they are reselling. Additionally you can request the CLR/DLR for your circuit and see exactly how it's built. You can also easily avoid resellers and not worry at all about this. Lastly you seem to not understand the difference between long haul and metro fiber.