Except with the NBN "the Internet" doesn't start until the traffic hits the RSP (arguably). The GPON is a point-to-multicast single-fibre "tree" technology that doesnt tolerate multiple possible paths between OLT and ONT - it aint Ethernet with Spanning Tree. At best, a technician would have to be sent out to manually re-plug/re-patch an alternative path fibre (possibly several hundred connectors if downstream of the splitters) at the appropriate junction-points either side of a broken cable to get customers back up. THEN you'd have to send out a splicing truck. THEN possibly patch them all back.
I can see both sides - if you have to send out a crew, might as well send out a splicing truck to the break and do it once. >From memory the previous redundant fibre paths were only upstream of a >spliitter cabinet anyway - so if the backhoe was downstream of the splitters >customers had to wait for a re-splice repair anyway. -------- Original Message -------- From: Andy Farkas <an...@andyit.com.au> Sent: 3 October 2015 10:34:23 am AEST To: link@mailman.anu.edu.au Subject: Re: [LINK] itN: Perth-Singapore Cable Cut On 02/10/15 23:42, Paul Brooks wrote: > The cable cut was in Indonesian waters. Nothing to do with NBN, any slowness > is due to each RSPs inadequate international arrangements. > My point was unclear. I was referring to fact that with redundant cables the Internet can route around faults, but with the idiots at nbn(tm) removing the redundancy in *its* network, once a cable is cut, that's it, you're down until it's fixed. IIRC this came up a couple months ago. See: http://blog.jxeeno.com/nbn-releases-mtm-network-design-rules/ -andyf _______________________________________________ Link mailing list Link@mailman.anu.edu.au http://mailman.anu.edu.au/mailman/listinfo/link -- Sent unplugged _______________________________________________ Link mailing list Link@mailman.anu.edu.au http://mailman.anu.edu.au/mailman/listinfo/link
