Lab IP addresses
- Our Network: 192.168.29.0
- Gateway: 192.168.29.1
- Reserved for switches and routers: 192.168.29.2 - 192.168.29.9
- The block of static IP addresses for us to use: 192.168.29.10 - 192.168.29.99
- The block of dynamically assigned addresses used by DHCP: 192.168.29.100 - 192.168.29.254 (See below for allocation)
- Broadcast 192.168.29.255
If your machine is configured to automatically obtain an IP address, then it will broadcast a packet requesting one from a DHCP server. We used to run our own DHCP server, but as of 12/9/09, the sysadmins now run a DHCP server for us. It will assign an address in the dynamically assigned range.
If you want your machine to be accessible from home, you need to use a static IP address. Pick one in our static block that no one is using, and update the list below. Then, you need to ask the sysadmins to assign a DNS entry for your IP address, and to unblock appropriate firewall ports.
Here's an example /etc/network/interfaces file for a static IP address:
auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.29.11 gateway 192.168.29.1 netmask 255.255.255.0 network 192.168.29.0 broadcast 192.168.29.255
Here's an example /etc/resolv.conf file:
domain cs.byu.edu search cs.byu.edu nameserver 126.96.36.199 nameserver 188.8.131.52
Table of static IP addresses
|Static IP||DNS name||User|
|192.168.29.10||axon.cs.byu.edu||Lab Web Server|
|192.168.29.11||rib.cs.byu.edu||Joseph Heydorn's Workhorse|
|192.168.29.15||lobe.cs.byu.edu||Lab backup server|
|192.168.29.20||steak.cs.byu.edu||DML MS SQL Server (Scott Burton)|
|192.168.29.21||tony.cs.byu.edu||The Atlas Workhorse|
|192.168.29.25||tofu.cs.byu.edu||Mike Smith' workhorse|
|192.168.29.47||Laurence Glazier DML|
|192.168.29.52||darci.cs.byu.edu||Dave and Daryl|
|192.168.29.55||ghoti.cs.byu.edu||Dave's old computer|
|192.168.29.62 - 192.168.29.95||nnmlc2 - nnmlc35||The cluster nodes|
Other Networking Settings
The CS dept runs a DNS server at 184.108.40.206 and 220.127.116.11. If you use these, department machines will resolve to their internal (192.168.*.*) address. BYU also runs a DNS server at 10.8.0.19. If you use this one, department machines will resolve to their external address. Either should work, but the latter may be a better choice if you want to see the experience that external visitors will have.
This should be 255.255.255.0
Set this to cs.byu.edu if you want to be able to find machines without specifying the ".cs.byu.edu" part of their names.