Differences between revisions 50 and 53 (spanning 3 versions)

The 40m has two networks: the LIGO general computing network and an internal "martian" network.

LIGO Caltech network

IP addresses on this network are in the form 131.215.114.XXX and 131.215.115.XXX .
The wireless router connected to the caltech net has hidden SSID "40m" (2GHz), "40m5G1" and "40m5G2" (5GHz). The router is nominally located on the top of the computer rack in the office area.

Martian network

See the Martian host table for IP address assignments on the martian network.
When you want to add a new host to the Martian network read this.
To ssh to one of the martian computers from a GC computer, ssh into controls@nodus, then use name (or name.martian) for the name. i.e.ssh pianosa.martian
Note that all the access from outside should go through nodus, while the connection from inside to outside is gatewayed by the NAT router (192.168.113.2).

On Jan 6th, 2016, the Martian wifi router was replaced with a Netgear R6400. Link to the corresponding ELOG entry

The router supports a 2 GHz network (11g) named "40MARS" and a 5 GHz network (11ac) "40MARS_5G". These two SSIDs are hidden.

The martian IP address of this unit is 192.168.113.232.

On Jan 8th, 2016, a new wireless bridge (NETGEAR EX3700) for GPIB instruments was installed.

Device Name: EX3700_1, Fixed IP: 192.168.113.233

It accepts ethernet (wired) devices with fixed IP of 192.168.113.XXX

chiara runs the DNS and DHCP for the Martian network, set up largely in the manner detailed in this website.

Configuration files can be found at

chiara:/etc/bind/named.conf.local
chiara:/etc/dhcp/dhcpd.conf

and other files in those same directories.

If you want to mount the /cvs/cds NFS filesystem on a computer already on the martian network, add the following line to the file /etc/fstab

chiara:/home/cds              /cvs/cds        nfs     rw,bg,nfsvers=3

Then make the directory where the /cvs/cds dir will be mounted, mount the filesystem via

mkdir -p /cvs/cds
sudo mount /cvs/cds

-  ⇤ ← Revision 50 as of 2018-06-01 02:35:29 → 
  Size: 2381
  Editor: KojiaraiATligoDOTorg
  Comment:
+   ← Revision 53 as of 2018-06-30 01:58:48 → ⇥
  Size: 2826
  Editor: KojiaraiATligoDOTorg
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 5:
- . IP addresses on this network are in the form 131.215.'''114'''.XXX
+ . IP addresses on this network are in the form 131.215.'''114'''.XXX and 131.215.'''115'''.XXX .

 . The wireless router connected to the caltech net has hidden SSID "40m" (2GHz), "40m5G1" and "40m5G2" (5GHz). The router is nominally located on the top of the computer rack in the office area.
-Line 24:
+Line 26:
- . To ssh to one of the martian computers from a GC computer, ssh into `controls@nodus`, then use `name` (or `name.martian`) for the name. i.e.{{{
ssh pianosa.martian }}}
+ . To ssh to one of the martian computers from a GC computer, ssh into `controls@nodus`, then use `name` (or `name.martian`) for the name. i.e.{{{ssh pianosa.martian }}}
-Line 27:
+Line 28:
+ . Note that all the access from outside should go through nodus, while the connection from inside to outside is gatewayed by the NAT router (192.168.113.2).
-Line 33:
+Line 35:
+The martian IP address of this unit is 192.168.113.232.