SLAC Computer Networking: Site Map Les Cottrell. Page created: 14 October 1993 (Over 14 years old!, see the Internet Archives for some old snapshots). Last Update: January 29, 2008. Central Computer Access | SCS | Networking Services | Computer Networking: site map | Network Group | WWW support This page provides useful information for users of the SLAC network.

Related sites For SLAC Staff SLAC Computing Reporting Problems

Page Contents Search SLAC Web People Detailed Index Index of All Links on this Page Introduction Mission, Policies, Principles, Team Responsibilities, Wiring, Network Monitoring. Configuration Architecture*, CANDO forms and listings*, Firewall*, Lookup host*, Router ARP History*, Phones*, Protocols supported, Request nodename*, Subnets*. Monitoring Border traffic*, Ganglia host monitoring, ICFA/SCIC WG on Monitoring, IEPM project, IEPM-BW, IEPM-BW results, IPv6, MAGGIE-NS, Monitoring sites, Nagios host alerts, Overview, PerfSONAR, PingER, PingER reports, SLAC LAN (new version - in test), SLAC Internet, Tools, Traceroute servers, Tutorial, WAN, Wiki. Network Services Contacts, DHCP, Ethernet Speed change request, Email, Firewall*, LWGate, Majordomo, Multicasting, News, Requesting Installations, Reporting Problems, TelAlert, Visitor subnet, Voice-over-IP (VoIP) Pilot Project, Wireless Networking Phone Services ATOMs, Caller-ID, Cellular Users' Guide, Configuration*, FAQ, Help directory, International cell phones, International phone call rates International use, Location, Policies, Problems, Requests, Services, Unknown phones, Users' Guide, Voice (audio) conferencing, VoIP Pilot, VoiceMail Reference Card. Remote Access Services Dialup, Stanford Network Connections, VPN/PPTP*, Windows Terminal Server Problems Case studies, Central access, Changes, Outages, Reporting. Other SLAC Info. Computer room tour, Mac, Security, UNIX, Windows NT. Info. Elsewhere Monitoring Tutorial, Monitoring Tools, Networks, Network documents, Network Organizations, Network Reference, Telecomm Update, Vendors. Enter numbers with operators in box (e.g. 365/7) then click on Calculate and the result will appear for about 3 seconds in the banner line at the bottom. Operators include + - * / % {modulus}. Click on Help for more information. It needs Javascript. If it stops working, try refreshing/reloading the page.

Useful utilities and Demos What is my IP address / traceroute? What is my IP address, OS, browser Traceroute router utilization Visual Traceroute Where am I? Test my network configuration from: SLAC * (server is down requiring security patches), Stanford, ANL. Network Path and Application Diagnosis (NPAD) Estimate bandwidth What is speed of your Internet connection Speed Test Bandwidth Test Latency Calculator Geolocate an IP host by pings (TULIP) PingWorld regions Interactive PingER map ViPER. MonALISA Internet Congestion Wave (46MB video file, 15MB video file) Hourly latency measurements for 2005 African Internet Weather (also on YouTube). Check Windows Network Settings Download host monitoring agent (LISA) Announcements, Hot Topics, In the News etc. 4/22/08 - Africa's Internet Drought. 2/3/08 - Mediterranean fibre cuts, from Slashdot and also from Network World. 1/18/08 - Princess Sumaya of Jordan Visits SLAC 11/7/07 - Rector of NUST Visits SLAC 7/28/07 - Bridging the Digital Divide from the APS/FIP Newsletter July 2007. 6/18/07 - SLAC's Les Cottrell and Collaborator Awarded "Best Software" Prize from SLAC Today. 6/14/07 - TULIP wins First Prize in All Asia Softec 2007 5/30/07 - Mapping the Digital Divide from SLAC Today. 11/29/06 - Rector of Pakistani University Visits SLAC from SLAC Today. 10/9/06 - Bandwidth Challenges and World Records audio, video & synchronized slides (Quicktime, 128.5MB) 10/9/06 - Quantifying the Digital Divide from an Internet Point of View audio, video & synchronized slides (Quicktime, 88.8MB) 4/6/06 - Physics Online and Overseas from SLAC Today. 2/13/06 - A Better Internet news story from ComputerWorld. Older Announcements, hot topics, news

Introduction

• SCS (SLAC Computer Services) Network Group's stated mission.
• Key principles for future network tactical decisions.
• SLAC's LAN Service Level Expectations.
• Network Policies:
  • No Tampering with Telephone, Networking Cables or Equipment,
  • Multi-homed hosts,
  • Production network devices,
  • Remote Access Servers.
  • Policy and expectations for the SLAC Visitor and Wireless networks.

Configuration Information

• Computer And Network Database in Oracle (CANDO) keeps detailed information on :
  • Network hardware and software*. There are forms to:
    • Find CANDO information on a selected host*,
    • Find information on a selected host by looking at network device tables and logs*,
    • Search for MAC address or IP address in history of Router ARP*,
    • Request Name Server lookups, Pings and Traceroutes from the SLAC Web server to your browser.
    • Update the CANDO database*.
  • Telecommunications phone information*.
• The firewall* router blocks some dangerous protocols to reduce SLAC's network security exposure. Any device placed inside the firewall must be registered. To register a device use the SLAC Nodename and Address Request Form*.
• Local Area Network
• Network Architecture 2007, presentation, various subnet diagrams: LEB*, BABAR*, FARM*, Visitor*.
• Older Schematics: Network Backbone Oct-95*, Switched Network Summer '96*, Switched Network Spring '97, Summer 1999, Spring 2000, Network Diagrams 2003*
• SLAC LAN/WAN Description talk given by David Millson October 27, 1999.
• SLAC Size of the Local Area Network a summary of specific characteristics of SLAC's network and hosts.
• Protocols supported across the SLAC LAN are: the TCP/IP suite. We do NOT route Appletalk Services. We do NOT bridge DEC's MOP protocol (see below), nor do we route DECnet phase IV (turned off 10/1/99) or IPX (Novell's Netware protocol), by policy IPX is blocked at routers. Anyone who believes they need DECnet phase IV support can migrate to DECnet Phase V (DECnet applications over TCP). The contact person at SLAC is Charley Granieri. You may also be interested in SCS Support for VMS.
• Server Usage Classification* provides a functional (file, compute, interactive, other specialized server) list of the main Unix based servers at SLAC.
• Switch ports, by policy, are disabled if they are not registered as having something connected to them. This is to reduce the disruption caused by incorrectly connecting up a new device, and to improve security. Note that most desktop devices today (Oct-97) are connected to shared hubs and NOT directly connected to a switch port. If you need a device to be connected to a switch port, you will need to contact the Help Desk.
• Windows NT Domains & Windows Workgroups provides a list of all SLAC's WNT domains.
• WAN connectivity is described in SLAC Networking, June 1999, Network Connectivity, July 1998 and The Internet & SLAC, July 1997. See also wan-oct95.ps* SLAC's WAN Connections, October 1995.

Network Monitoring

• Internet End-to-end Performance Monitoring (IEPM) project.
• Network Monitoring for the LAN and WAN Invited talk given at ORNL, June 24, 1996, by Les Cottrell.
• Network Monitoring Tools.
• Quick Guide to SLAC's Networking Reports and Data includes performance statistics covering availability, response time, packet, and byte error counts daily, weekly, and monthly.
• Wide Area Network Monitoring at SLAC.

Network Services

• DHCP service at SLAC.
• The SLAC Firewall helps to protect SLAC against some insecure protocols.
• SLAC Email provides all sorts of information on email related services at SLAC.
• LWGate is used to provide a gateway between Listserv and WWW.
• MajorDomo is used for providing SLAC wide Email lists.
• News is used to provide a NetNews service to SLAC.
• Print services
• These are handled by the Unix Support People. Requests for help should be made to unix-admin@slac.stanford.edu.
• Printer Names and Queues gives a list of all printers defined to the SLAC UNIX systems, with their print names, and host machine names.
• Remote Access Services.
• Response times for various network services for yesterday* and so far today*.
• WWW Support, and Configuring Netscape at SLAC for Email and News.
• TelAlert

Remote Access Services

• Introduction to Remote Access Services is an overview of the ways you can connect your computer or terminal from home or offsite to the SLAC network.
• Dialup Service allows 56kbps modem connections to the SLAC network.The SLAC Dialup Service is scheduled to end on 31 March 2008.

Problems

• Instructions for Reporting Network Problems
• Central Computing Access provides a list of phone numbers, URLs & e-mail addresses for reporting problems and obtaining services from SCS.
• Outage information is reported in the netnews group slac.computing.outages.
• System Changes are reported in the netnews group slac.computing.changes.

Other Information at SLAC

You may also find the discussion/newsgroups SCS-BaBar Discussion Group and slac.networks* helpful.

Information Sources Elsewhere