Tektronix 071-0855-05 user manual Transmitter IP Payload, IP Setup

Operating Basics: User Interface

Transmitter - IP Payload

The new Packet Over SONET (POS) feature characterizes physical layer performance of SONET and SDH equipment by generating and measuring IP traffic.

Specifically, the POS feature provides the ability to determine physical layer operating limits based on IP QoS. For instance, the sensitivity of IP routers to received laser power, optical jitter tolerace, degraded Signal to noise, and frequency offset can be determined using IP measurements.

The principle benefit of this additional feature is confidence that IP QoS is not preturbed by conforming physical layer degradations. The POS feature is not intended to be a comprehensive IP QoS tester but to enhance physical layer testing.

Figure 2-26: IP Header Menu

The IP Payload menu consists of property controls for Traffic, IP Header Setup, POS Scrambling, IP Payload and Interframe Gap. To edit the IP Header click on the Edit IP Header button. Drop down menus included in this menu allow the user to set specific properties.

IP Setup

The IP Payload data-gram starts with the IP header. The user can set the source and destination IP addresses. The access to these fields is through the Edit IP Header button, as described in the next section. The identification field of each data-gram contains a 16-bit number that is incremented by one for each. The sequence does not restart but continues from one packet to the next. The IP Setup area identifies the sequence and packet information.

POS Scrambling can be set to ON or OFF via the pull down menu.

The IP Payload is selectable by the pull down menu. The selections available are: PRBS 31

16-bit Word, user-selectable

If the 16-bit Word is selected, an EDIT button and selection box is displayed.

OTS9100 User Manual 2-43