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Joined 2 years ago
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Cake day: June 14th, 2023

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  • t+ and T- to upstream neighbor (2) + a single wire from upstream to tell you to send (3), R+ and R- (5) to down stream neighbor + a single wire to let downstream know when you can receive from them.(6) And a pair to control a relay in what would be like a token ring MAU. Token ring is also a logical ring and a physical star: All the physical cables come to a central hub (physical star) but the machines are connected

    Logical Ring                                                       Physical Star
    +-->[ r t ]--> [r  t] -->[ r  t ]--> [r  t] --> [ r t]--+       [ machine1 ] ===== cat 6 ==== |  mau |=====cat6== [ machine 3 ]
     |                                                                 |       [ machine2 ]====== cat 6 ====|          |====cat 6 == [ machine 4 ]
    +-----------------------------------------------------+
    
    

    until the last machine loops around to connect to the first.

    Is it anything like token ring? No, The difference is no token to lose, No ring master or deputy ring master to lead things- everyone just plays along according to basic rules. Any machine can move data to it’s upstream neigbor at any time that neighbor is ready to take it, no one machine at a time getting to talk. So it’s not like token ring. Also unlike Ethernet, you can connect any number of machines in a ring: 5 for a small office, 20 for a department of a large firm, 200 for every employee of a firm, 2000 for all the offices of a company or a part of a neighborhood. Since machines are not contending for bandwidth there is no collision, no backdown and resend.

    Rings of machines are connected to bigger rings via gateways - which also have their own way of assigning addresses to each of their ports.















  • Yeah, no problem… I started out with just bare rsync - but I did the backup infrequently and needed my notes to know the command. Then I wrote a simple shell script to run the rsync for me. Then I decided I needed more than one backup, redundancy is good. Then I wanted to keep track of the backups so I had it write to .backuplog then that file started getting dated (every time I run a “sun” backup the record of the previous one is useless) so Finally TaDa! loci is born.





  • They probably named it HORNET for a reason - think Japanese Murder Hornets… What Could Possibly Go Wrong??

    It will probably start out as little glitches and slowdowns to destroy faith in your system (“Windows works right all the time”) a random 2 second pauses. Finally one day every Linux box in the world crashes, all at the same time, because some ‘dummy’ in Microsoft deleted the private signing key.