IP and Ethernet testing Tool ("IET") is an ethernet bridge addon for testing of network appliances and applications (communication equipment).
Initialy IskraTel extended and customized the NistNet tool. However NistNet functions on IP layer and requires that tested equipment be configured to use different subnets and gateways. Nistnet main purpose was internet emulation while IET main purpose is testing of communication equipment.
Initial screen with one rule. On the left you can see a list of rules. In the middle is a notetab with a matching column and a target column. The last column holds the statistic infromation.
The same screen with IP tab open. Visible is IP based matching area and IP/UDP based target area. For a packet to "hit" a target it has to match both ethernet and IP criteria (left notetab column).
IET supports a constant and random delay. This graphs show the even distribution of
delay engine (set to 200ms constant and 50ms random delay).
X axis: Packet number
Y axis: Packet delay
The same graph with dots. A carefull observer will notice the linux timer granularity. The data was acquired on a RedHat 8.0 vendor kernel with a resolution of 512ticks per second.
This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.