NSE-12 and NSE-22 quick start guide
Introduction
Network Service Element come in two varieties: SPAN and TAP.
The SPAN model has two independent monitor interfaces labeled LAN 3 and LAN 4. In a typical configuration, both ports will be connected to two SPAN output ports: one port representing all packets from the network to the site and the other port representing all packets in the opposite direction. The NSE offers great WAN visibility, including a more precise traffic measurements method than possible with flow based analysis or snmp. Other applications of NSE are possible, for example the monitoring of server bound traffic in a relatively small remote datacenter.
The fail-safe TAP model has been designed to be installed inline between the CPE and the local switch. No specific configuration of those devices is required.
Solution
Accessing the appliance via terminal session
![]() | We recommend using MobaXterm to access the appliance. Download MobaXterm at: http://mobaxterm.mobatek.net/download.html |
The appliance is accessible through ssh using a terminal emulator program and ships with two local user accounts, Administrator and comcert. User Administrator has been created for the end-user to safely shut down and reboot the appliance. User comcert is reserved for COMCERT Support (C-TAC). To connect to NSE from another terminal session, run the following command:
ssh -l Administrator <IPaddressPMA>
Accessing the appliance via serial console
Use a serial cable to connect to the RS-232/RJ45 serial port on the backside of the appliance. Set the serial port on your computer to match the settings of the appliance: 9600 8N1.
Shutdown or reboot the appliance
![]() | All applications must be brought-down properly before shutting-down or rebooting the appliance. Failure to do so may result in loss of recorded data. |
Connect to NSE and login as Administrator.
Once authenticated, run one of the following commands:
To shut-down the appliance:
$ sudo systemctl halt
To reboot the appliance:
$ sudo systemctl reboot
In case and only in case the above commands fail (risk of data loss):
To power-off the appliance (equivalent of removing the power source).
$ sudo systemctl poweroff