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How to Assign an IP Number

(Modified 9 Sep. 2000)

>From stefan@crux.astro.utoronto.ca Wed Oct 21 18:22 EDT 1998

To all astronomy computer users,

   Due to some confusion, even on my part, I think I need to put in writing
the procedures for hooking up a computer to any network, if that computer is
to belong to the "astro.utoronto.ca" domain. I hope this alleviates any
further confusion ...

					Stefan Mochnacki,
				     (acting systems manager)
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Procedure for assigning an Internet Protocol (IP) number and name in the
astro domain:

	When you want to hook up a computer and have it exist as part of the
"astro.utoronto.ca" domain, you need to notify the Astronomy Systems Manager
so that it can be entered in our Domain Name System (DNS) database primary
files, which are kept on the departmental server "lepus".

(a) If you are at DA or DDO:

    Select a name for your computer, test to see whether it is free by
    running the "nslookup" command on an existing running machine:

		nslookup  myname.astro.utoronto.ca

    where "myname" is your chosen name. You should get a negative result.
    You should also try:

		nslookup myname.cita.utoronto.ca
		nslookup myname.physics.utoronto.ca

    since we don't want to duplicate names with our closest neighbours.  If
    "myname" is OK, send Hugh an e-mail, specifying where you are installing
    the computer. If at DA, Hugh will look after the wiring (or, if necessary,
    arrange for it to be done). At DDO, Hugh also usually looks after
    wiring (e-mail him). Also, specify what sort of computer it will
    be, under what sort of OS (Linux is much preferred).

    Hugh will reply with an assigned IP number for you. It will become active 
    within a few hours to a day, immediately if you use "lepus" as your
    nameserver.


(b) If you are elsewhere (e.g. Scarborough or Erndale):

	Check the preferred name as above. Then send me the name AND the
    IP number assigned to you by your local network administrator,
    or ISP (if, wonder of wonders, you can swizzle a PERMANENT IP number
    out of them. Tell 'em that you "don't support DHCP", and don't use their 
    software). 

    The response is as above, except you don't need to hear from Hugh.
    If you use nameserver=128.100.89.2, it'll be immediately active.
    If you use your local or ISP nameserver, the DNS change may take a
    day or so to propagate.

(c) Note regarding the other network setup numbers, as required by the
    network configuration procedure of your computer:

	At DA:

		Gateway    = 128.100.89.1
		Nameserver = 128.100.89.2
		Netmask    = 255.255.255.0

	At DDO: 

		Gateway    = 128.100.77.224
		Nameserver = 128.100.77.6   and/or  128.100.89.2
		Netmask    = 255.255.255.0


	Elsewhere:

		Gateway    = assigned locally or by ISP
		Nameserver = local, or 128.100.89.2
		Netmask    = assigned locally or by ISP 

(d) E-mail aliases:

	Please also send Hugh your actual e-mail address, so that he can enter
    an alias for you as "myname@astro.utoronto.ca". If you have several
    aliases, please let him know so that he can put all of them in (e.g. I'm
    both "stefan" and "mochnacki" at astro ...)

	You can have a non-astro actual address entered as an "astro" mail
    alias. This especially applies to CITA-affiliated astronomy denizens.


References: 

	http://www.kei.com/homepages/ckd/dns-loc/
	http://www.astro.utoronto.ca/computers/
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