Current Testbed Operational Status

NOTE: The preliminary testbed has not been completely SHUTDOWN. A limited portion of the regular testbed is now open.

All CORNET nodes currently have private IP addresses, and are behind the CORNET firewall. However, the ssh port for each individual node is still directly accessible through the firewall. To access the CORNET nodes you must ssh to the CORNET gateway, 128.173.221.40, using a specific port that is unique to each CORNET node. The CORNET gateway redirects the ssh traffic to the appropriate CORNET node ssh server.

For information on the physical locations of the RF portion of the node, see here: CORNET Node Location and Status Information

The port list is as follows, where NodeX-Y refers to node Y on floor X:

• Node1-1: 7001
• Node1-2: 7002
• Node1-3: 7003
• Node1-4: 7004
• Node1-5: 7005
• Node1-6: 7006
• Node1-7: 7007
• Node1-8: 7008
• Node1-9: 7009
• Node1-10: 7010
• Node1-11: 7011
• Node1-12: 7012
• Node2-1: 7013
• Node2-2: 7014
• Node2-3: 7015
• Node2-4: 7016
• Node2-5: 7017
• Node2-6: 7018
• Node2-7: 7019
• Node2-8: 7020
• Node2-9: 7021
• Node2-10: 7022
• Node2-11: 7023
• Node2-12: 7024
• Node3-1: 7025
• Node3-2: 7026
• Node3-3: 7027
• Node3-4: 7028
• Node3-5: 7029
• Node3-6: 7030
• Node3-7: 7031
• Node3-8: 7032
• Node3-9: 7033
• Node3-10: 7034
• Node3-11: 7035
• Node3-12: 7036
• Node4-1: 7037
• Node4-2: 7038
• Node4-3: 7039
• Node4-4: 7040
• Node4-5: 7041
• Node4-6: 7042
• Node4-7: 7043
• Node4-8: 7044
• Node4-9: 7045
• Node4-10: 7046
• Node4-11: 7047
• Node4-12: 7048

For example, to access node1-3, ssh to the IP address 128.173.221.40 using port 7003.

Accessing the network from Windows

From a windows machine, an SSH client is required in order to remotely access the CORNET nodes individually. A popular windows SSH client is  PuTTY.

Accessing the network from Linux

From a linux machine simply issue the following command where the port is 7000 + the node # you want to log into.

# ssh -X <username>@128.173.221.40 -p <7000 + node#>

Note: the -X allows X11 forwarding for running X11 applications remotely.

For example, to login to CORNET node1-2 with the login name "testuser" do the following:

# ssh -X testuser@128.173.221.40 -p 7002

To login to CORNET node1-3 with the login name "testuser" do the following:

# ssh testuser@128.173.221.40 -p 7003

Obtaining Remote Access Login Information

To obtain login credentials for the CORNET nodes, please email the CORNET administration at [vtcornet@…]

Working from your User directory

Each registered user receives a folder on a dedicated NFS drive which allows them to store and access code locally. Each CORNET node mounts the NFS directories at boot time and you may access your directory on each node at /users/*my_login*.

In the interest of open and collaborative development, each user has read access to the other user folders and read/write access to their own folder. You may upload files into your NFS directory in the following way:

- Login to any node using the above ssh procedures. - Change to your user directory:

# cd /users/*my_login*

- Use the SCP command in the remote shell to copy files or folders to your user directory:

Node Software

Each node contains the following software:

• Ubuntu Linux 9.04 Client Version
• GNU Radio 3.3.0
• OSSIE 0.8.1