nickb800:

 

Out of curiosity, at what point does in Chorus's network does redundancy come into play? Appreciate it's hard to generalise, as you say, physical limitations come into play in each specific area. For GPON, there would be no redundancy between ONT on premises and OLT in an exchange, but does the typical exchange have redundant routes through to regional hubs/handovers?

 

For this specific outage, does anyone know if it was backhaul from the exchange that was hit (implying there was no redundancy in trunk routes from that exchange), or a duct with a bunch of GPON fibres?

I'm personally going to be light on information as I don't want to share anything potentially sensitive to Chorus about network design (also because now I know at-least the NZ Herald has scraped this thread for information) but in this case what I've heard was this was rather close to the exchange which is why much more was knocked out by this incident. There are likely redundant links here but the redundant links will be running to the same exchange but may take different paths further down the road.