Documentation-Computer network

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HacDC computer network - Jan. 2, 2020 Tabletop computer terms - move over means to use the touch pad to move the arrow on the screen to the described position click on means to move the arrow to the described position & then press either click button type means to type what is described type: means to type the characters that follow the space after : enter means to type what is described (if anything) & then press the Enter key (at right) enter: means to type the characters that follow the space after : & then press Enter It is possible to connect to devices on the network using the internet or using the local network. To connect using the internet: 1. Enter ssh systemname@machinename.hacdc.org (i.e., ssh renderadmin@jobs.hascdc.org) 2. At Password: enter standard password To connect using the HacDC network: 1. Enter ssh systemname@machinename.local (i.e., ssh renderadmin@jobs.local) 2. If the system asks Are you sure you want to continue connecting (yes/no)? enter: yes 3. At Password: enter standard password To check if it is possible to communicate with a device: 1. Open a MATE terminal (if not already present; see Documentation-Tabletop_computers) 2. Enter ping machinename.hacdc.org or ping machinename.local (i.e., ping jobs.local) 3. If it responds ## bytes from ###... it is communicating 4. To stop pinging type Ctrl C To determine the path to the address the computer is connected to: 1. Enter mtr address (i.e., mtr jobs.hacdc.org) 2. When finished click on Quit If the network will not connect: 1. Try using the other connection method (.local if .hacdc.org doesn't work or vice versa) 2. Check if it is possible to communicate by using ping (see above) 3. If it is not communicating stop here & get help 4. Enter mtr address (i.e., mtr jobs.hacdc.org) 5. Look at the column labeled Loss; if any of the values are close to 100% that could be the problem 6. Click on Quit 7. If there was a problem with the path restart the computer & hope it uses a different path this time Components of the network: Renderadmin computer (large computer at left under table below clock) - for converting .escad files to .stl files for 3D printing etc. - machine name=jobs, system name=renderadmin 3D printer computer (Dell Optiplex 760 to left of Rostock) - controls Rostock, Mini, & Taz 3D printers - machine name=pronterhost, system name=hacdc Classroom TV computer (large Sharkoon below big screen) - controls screen - machine name=classroom-tv, system name=hacdc Laser cutter computer (small computer in cabinet below laser cutter) - controls laser cutter Here is the current HacDC network wiring: On floor below clock - Netgear ProSAFE 16-Port Gigabit Click Switch 1 - gray - TP-Link Router 2 2 - gray - Printer (paper) computer 14 - white - open (by laser cutter) 16 - orange - renderadmin computer others - no connection On bottom shelf over sink - LinkSys VOIP Voice Phone - phone cable - Uniden EX18560 phone Internet - blue - LinkSys switch 6 C7 TP-Link AC1750 Wireless Dual-Band Gigabit Router Internet - blue - D-Link switch Ethernet 1 - gray - open 2 - yellow - TP-Link switch 7 Middle shelf - D-Link Wireless AC750 Dual-Band Router DIR-817LW LAN 4 - blue - TP-Link switch 8 Internet - gray - LinkSys switch 5 TP-Link TL-SG1008D Gigabit Switch 1 - yellow - wall socket 2 - gray - Netgear switch 1 3 - blue - 3D printer computer 4 - no connection 5 - black - Linksys switch 1 6 - no connection 7 - yellow - TP-Link router Ethernet 2 8 - blue - D-Link router LAN 4 Linksys Gigabit 8-Port Workgroup Switch (note that the connections on this switch are numbered from right to left while the TP-Link switch is left-to-right) 1 - black - TP-Link switch 5 2 - no connection 3 - gray - open (below HARC) 4 - black - open (below HARC) 5 - gray - D-Link router Internet 6 - blue - Linksys VOIP Voice Internet 7 - blue - open (below HARC) 8 - no connection On table below TV screen - D-Link igreen DGS-1005D switch 1 - blue - TP-Link router Internet 2 - gray - open 3-4 - no connection 5 - yellow - TV computer If I read this right 3 of the 4 switches are unnecessary!