Networking

Physical Equipment

Our main switch (connected to the IMSS 1Gbit uplink) is a Juiper EX2200. This switch is brand-new as of April 2010 and screams. The core servers, shellservers, mortals, and lenin are connected to this switch. It provides a DHCP safe haven for demeter (and our servers through RADIUS on charon) while allowing Winnett DHCP for other machines. We have a Cisco 2970 connected via two LACP links to the Juniper switch for additional gigabit ports (currently filled with hosted machines). We will be setting up a Cisco 2950 with a similar gigabit trunk lines for the hosted racks once we move them to where we want them.

Static IPs in UGCS

We don't actually have a netblock, we just have 64 ip's. So you configure your machine like any other in the Winnett netblock, with netmask 255.255.255.0 and gateway 131.215.176.254. A sample Debian interfaces file:

iface eth0 inet static
    address 131.215.176.xxx
    netmask 255.255.255.0
    gateway 131.215.176.254

IPv4 Allocations

kabta: 131.215.172.59

• 64: Netblock
• 65-75: Coreserver
  • 64 netblock.ugcs.caltech.edu.
  • 65 hermes.ugcs.caltech.edu.
  • 66 demeter.ugcs.caltech.edu.
  • 67 apollo.ugcs.caltech.edu.
  • 68 athena.ugcs.caltech.edu.
  • 69 persephone.ugcs.caltech.edu
  • 70 hera.ugcs.caltech.edu.
  • 71 poseidon.ugcs.caltech.edu.
  • 72 zeus.ugcs.caltech.edu.
  • 73 hestia.ugcs.caltech.edu.
  • 74 hephaestus.ugcs.caltech.edu.
  • 75 dionysus.ugcs.caltech.edu.
  • 76 nfs.ugcs.caltech.edu ( Failover NFS server between athena and hestia )
• 75-85: Hosted servers that will be moved
  • 78 fo.ugcs.caltech.edu - Testing IP for failover stuff
  • 80 doldnut.ugcs.caltech.edu. (owned by devteam/Jon Dama)
  • 81: afs-c.ugcs.caltech.edu: AFS database server (currently hermes)
  • 82: afsmail.ugcs.caltech.edu: AFS file server that houses mail partitions (currently failover between hermes and athena)
• 86-105: Hosted servers
  • 86 averyfs.ugcs.caltech.edu. (Owned by Avery IMSS)
  • 87 bsi-la.ugcs.caltech.edu. (owned by Bo Adler)
  • 88 lenin (owned by Dabney comptrollers)
  • 89 donut (owned by Devteam)
  • 90 metatron (owned by Matt Maurer)
  • 91 white.caltech.edu (owned by Mike White)
  • 92 philemon.gelide.org (owned by Jon Dama)
  • 93 daisy.ugcs.caltech.edu (Elizabeth Fong)
  • 94 ballroom (Ballroom dance club, )
  • 95 hiro.ugcs.caltech.edu ( Silas's machine )
  • 98 azkaban.ugcs.caltech.edu ( Owned by Eugeniu Plamadeala, username eugeniu)
  • 99 fisheye.ugcs.caltech.edu (owned by Keegan McAllister, username keegan)
  • 100 kukulza.ugcs.caltech.edu (Patrick Xia, username patrick)
  • 101 eternity.ugcs.caltech.edu (Alex Roper, username alexr)
  • 102 vitamin-s.ugcs.caltech.edu (owned by David DiCato)
  • 103 (name not known yet) ( owned by Pat Cahalan )
  • 104 (name not known yet) ( owned by Alex Rasmussen )
• 105-124: Shellserver
  • 105 lara.ugcs.caltech.edu.
  • 106 styx.ugcs.caltech.edu.
  • 107 minthe.ugcs.caltech.edu.
  • 108 lethe.ugcs.caltech.edu.
  • 109 calliope.ugcs.caltech.edu.
  • 110 clio.ugcs.caltech.edu.
  • 111 achilles.ugcs.caltech.edu (mortal)
  • 112 helen.ugcs.caltech.edu (mortal)
  • 113 melpomene.ugcs.caltech.edu.
  • 114 polyhymnia.ugcs.caltech.edu.
  • 115 terpsichore.ugcs.caltech.edu.
  • 116 thalia.ugcs.caltech.edu.
  • 117 urania.ugcs.caltech.edu.
  • 118 jason.ugcs.caltech.edu (mortal)
  • 119 midas.ugcs.caltech.edu (mortal)
  • 120 medusa.ugcs.caltech.edu (mortal)
  • 121 dictys.ugcs.caltech.edu (mortal)
• 125: printer
• 126: charon
• 127: broadcast

IPv6 Allocations

• We should get some (independent of Caltech even), if at all remotely possible.