Differences between revisions 2 and 43 (spanning 41 versions)

The 40m has two network segments: 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

Martian network

IP addresses on the martian network are in the form 192.168.113.XXX
The wireless network is on the martian network.

Gateway	192.168.113.2
netmask	255.255.255.0
nameserver	192.168.113.20
nameserver	131.215.125.1
nameserver	131.215.139.100
nameserver	131.215.254.99

See also Martian_Host_Table for IP address assignments on the martian network.
When you add a new host to the Martian network, choose a name from Computers_and_Scripts/Pool_of_Names_for_Computers.
To ssh to one of the martian computers from a GC computer, ssh into controls@nodus, then use "name.martian" for the name. i.e.
ssh pianosa.martian

Wireless Network

On Jan 6th, 2016, the martian wifi router was replaced to Netgear R6400. Link to the corresponding ELOG entry https://nodus.ligo.caltech.edu:8081/40m/11916

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

Wireless Bridge for GPIB instruments

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

Device Name: EX3700_1, Fixed IP: 192.168.113.233

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

HowToConfigureNETGEAREX3700

Below this point the description is too old and is not valild any more (KA, Jan 8, 2016)

Wireless Network

The wireless network is part of the Martian Network. The Martian ethernet is bridged to wireless via a Linksys WRT600N wireless router with IP address https://192.168.113.220. Note that the wireless access point is only bridging the wired and wireless networks--it does not do NAT. To access the outside world, your network settings should be the same as given above for the Martian network.
You can configure the router by accessing its IP address with a web browser.
The password for configuring the wireless AP is ll_admin.
The manual for the router is here: WRT600N_Manual.pdf
Here are several screen shots of the configuration screens: screen1.pdf screen2.pdf screen3.pdf screen4.pdf
Here is attached the router's configuration file as of June 7, 2011. The router can reload this file if it gets lost or corrupted. MartianRouter.bin
Basically, you don't care about the internet setup because you don't connect anything to the WAN port. The physical connection to the router is just one martian LAN cable to one of the LAN ports.
Security is enforced by the MAC address filtering. Only registered machines can connect to the wireless network. Whenever you reset the router (not power cycle), you should register all the lab laptops to the router.
The SSID of the martian wireless network is 40MARS.

Mount linux1

If you want to mount linux1 on a computer in order to share data on Martian network, add the following line on the file /etc/fstab

linux1:/home/cds        /cvs/cds                nfs     rw,bg,soft      0 0

Then make the directory where the linux1 will be mounted on
{{{ mkdir /cvs && mkdir /cvs/cds

}}}

Then reboot the computer. If it's mounted correctly you will find some directories under /cvs/cds/

Firewalling by Router:WRT310N

A firewall is used for network isolation between a new CDS computer and the existing CDS system. It nicely allows to avoid a network conflict. For this purpose, a network router: LINKSYS WRT310N has been employed.

network address	192.168.113.178
internal address	192.168.1.1
DHCP address	192.168.1.100-150	currently disabled

Anyone can log in to the router by any web browser. The login password is set to admin.

-  ⇤ ← Revision 2 as of 2007-07-16 22:53:40 → 
  Size: 566
  Editor: TobinFricke
  Comment:
+   ← Revision 43 as of 2016-01-09 06:43:24 → ⇥
  Size: 4217
  Editor: KojiaraiATligoDOTorg
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-The 40m has two network segments: the general Caltech network and an internal "martian" network.
+''' The 40m has two network segments: the LIGO general computing network and an internal "martian" network. '''
 Line 3:
-= Caltech network =
+= LIGO Caltech network =
 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
 Line 9:
-IP addresses on the martian network are in the form 131.215.'''113'''.XXX
+ . IP addresses on the martian network are in the form 192.168.'''113'''.XXX
 Line 11:
-The wireless network is on the martian network.
+ . The wireless network is on the martian network.
 Line 13:
-|| Gateway    || 131.215.113.2    ||
+|| Gateway    || 192.168.113.2    ||
|| netmask    || 255.255.255.0    ||
|| nameserver || 192.168.113.20   ||
-Line 18:
+Line 20:
-See also [[Martian Host Table]] for IP address assignments on the martian network.
+ . See also [[Martian_Host_Table]] for IP address assignments on the martian network.

 . When you add a new host to the Martian network, choose a name from [[Computers_and_Scripts/Pool_of_Names_for_Computers]].

 . To ssh to one of the martian computers from a GC computer, ssh into {{{controls@nodus}}}, then use "name.martian" for the name. i.e.
 . {{{ssh pianosa.martian }}}


== Wireless Network ==

On Jan 6th, 2016, the martian wifi router was replaced to Netgear R6400. Link to the corresponding ELOG entry [[https://nodus.ligo.caltech.edu:8081/40m/11916]]

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

== Wireless Bridge for GPIB instruments ==

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

Device Name: EX3700_1, Fixed IP: 192.168.113.233

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

HowToConfigureNETGEAREX3700

---------

Below this point the description is too old and is not valild any more (KA, Jan 8, 2016)

---------


== Wireless Network ==

 . The wireless network is part of the Martian Network.  The Martian ethernet is bridged to wireless via a Linksys WRT600N wireless router with IP address https://192.168.113.220.  Note that the wireless access point is only bridging the wired and wireless networks--it does not do NAT.   To access the outside world, your network settings should be the same as given above for the Martian network.

 . You can configure the router by accessing its IP address with a web browser.
 . The password for configuring the wireless AP is {{{ll_admin}}}.

 . The manual for the router is here:  [[attachment:WRT600N_Manual.pdf]]

 . Here are several screen shots of the configuration screens: [[attachment:screen1.pdf]] [[attachment:screen2.pdf]] [[attachment:screen3.pdf]] [[attachment:screen4.pdf]]

 . Here is attached the router's configuration file as of June 7, 2011. The router can reload this file if it gets lost or corrupted. [[attachment:MartianRouter.bin]]

 . Basically, you don't care about the internet setup because you don't connect anything to the WAN port. The physical connection to the router is just one martian LAN cable to one of the LAN ports.

 . Security is enforced by the MAC address filtering. Only registered machines can connect to the wireless network. Whenever you reset the router (not power cycle), you should register all the lab laptops to the router.

 . The SSID of the martian wireless network is {{{40MARS}}}.


== Mount linux1 ==
 . If you want to mount ''linux1'' on a computer in order to share data on Martian network, add the following line on the file {{{/etc/fstab}}}
 . {{{
linux1:/home/cds        /cvs/cds                nfs     rw,bg,soft      0 0
}}} 
 . Then make the directory where the ''linux1'' will be mounted on
 . {{{ mkdir /cvs && mkdir /cvs/cds
}}}
 . Then reboot the computer. If it's mounted correctly you will find some directories under {{{/cvs/cds/}}} 

== Firewalling by Router:WRT310N ==
 . A firewall is used for network isolation between a new CDS computer and the existing CDS system. It nicely allows to avoid a network conflict. For this purpose, a network router: ''LINKSYS WRT310N'' has been employed.

|| '''network address''' || 192.168.113.178 || ||
|| '''internal address'''|| 192.168.1.1 || ||
|| ''' DHCP address '''  || 192.168.1.100-150|| currently disabled ||

 . Anyone can log in to the router by any web browser. The login password is set to {{{admin}}}.