UTILIZATION GUIDELINES SmartWindows

NETCOM SYSYEMS SmartBits:
UTILIZATION GUIDELINES SmartWindows

CONFIUGRATION STEPS FOR TRAFFIC GENERATION:

First, decide which interface is going to transmit/receive data.
E.g. (Port 1, tx), (Port 2, rx)
Then, for the transmit port do the steps indicated in list item 2.
SmartBits Ethernet card configuration
1. From the main SmartWindows window, click on the port icon and select: Layer 3 setup
  - configure the MAC address (any of your choice) and the IP address Note: the IP address of the card has *different* from the IP source address deployed for traffic tranmission, i.e. the src IP address in data packets will be different from the IP address configured here.
  - Gateway: IP address of the next hop router interface
  - reply to all arp requests: DISABLED
2. From the main SmartWindows window, click on the port icon and select: SmartMetrics Mode
  Note: SmartMetrics Mode allows the port to send out IP and UDP traffic.
3. From the main SmartWindows window, click on the port and select: 100 Mbps or 10 Mbps and in case of Fastethernet Half/full duplex
For *both* the tx and rx port, define the traffic stream profile which is also called "VTE" (Virtual Transmit Engine). For each port we can configure up to 1000 VTE. Before each test run a given VTE has to be selected. A VTE is configured like in the following:
- From the main SmartWindows window, click on the port icon and select:
```
Transmit Setup > add VTE
```
  and configure the VTE
- size: ethernet frame size including overhead - CRC (4 bytes)
- protocol: e.g. UDP; then click on OK, a window calles protocol edit will pop up.
- Protocol edit> MAC dest: MAC address of the next hop router
- Protocol edit> MAC src: MAC address of the source, it has to be *different* from the MAC address of the tx port
- Protocol edit> source IP: tx IP address, it has to be *different* from the IP address of the source port.
- Protocol edit> dest IP: rx IP address, it has to be *different* from the IP address of the destination SmartBits port.
- close the window, data is atomatically saved.
Note: on the tx port we configured the transmitting VTE. Even for one-way tests like latency tests we have configured the symmetric VTE on the rx port.
Force an ARP transaction. This can be done in 2 ways:
1. From the main SmartWindows window, click on the port icon and select: Layer 3 send ARP Request
  This has to be repeated for both the tx and rx port
2. ```
Actions > Layer 3 ARP
```
Click on the tx port icon and select the following:
```
Transmit Setup > Edit settings for this port
```
This is to configure the packet size and the output rate.
Run the test selected, for example:
```
Options > SmartMetrics > Latency over time
```
and then press "Start".
We didn't find a way to set the test length. We stop the latency test by pressing "Stop".
Note: results are displayed on the screen only after "Stop" is selected.
In order to save the current settings (port configuration and VTE configuration), select the following:
```
file > save as
```

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