To reach the dialog box below, right-click on the test name in the System Map and select Test Parameter Options. Type the following two commands at the command prompt:
RJ45 LOOPBACK OFFLINE
Netlbtest also requires that the eri device be configured offline before running the test. See "Twisted-Pair Ethernet (TPE) Loopback Cable" for the diagram. The loopback connector for the eri device is a standard RJ45 connector. The two ends of the cable should be connected to the TX and RX ports of the adapter (the order does not matter), thus forming a loop. The cable can be made by splitting a standard fiber optic cable in two. The loopback cable for ge is based on the following specifications: multimode, duplex, 62.5/125 micron, sc connector, 850nm. The loopback connector is required for both internal and external tests of the Ethernet device.
RJ45 LOOPBACK DRIVER
A loopback connector provides the network interface driver the necessary link for testing, while maintaining isolation from a live network. netlbtest cannot run if the network interface is connected to a live network, however the link must be up. To run netlbtest, a loopback connector must be connected to the Ethernet interface. Even though the netlbtest does not depend on the network interface configuration status of the Ethernet interface, the interface should be brought down with the ifconfig command (refer to the ifconfig(1M) man page) to avoid erroneous messages. You must have the Ethernet card and the device driver installed, a loopback connector in place, and Intervention mode enabled before running netlbtest. Each time the packet sent is selected from a different starting point of the data buffer, so that any two consecutively transmitted packets will not be the same.ĭo not run nettest and netlbtest at the same time or the tests may fail. If an error occurs (for example, packet mismatch or timeout), an error message indicating the type of error, its probable cause(s) and recommended action(s) is displayed on the SunVTS console.The data sent out is generated by a random number generator, and put into a data buffer. The test generates and sends out the desired number of packets (a tunable parameter) and expects to receive the same number of packets through the loopback interface, external or internal. For the purpose of this test, a packet is defined as an Ethernet header followed by the Ethernet data payload (refer to the IEEE 802.3z standard). The netlbtest uses DLPI RAW mode to talk to the device driver. It runs in loopback (external/internal) mode.
These include eri (the Ethernet device in the RIO chip) and ge (Gigabit Ethernet), and ce (GigaSwift Ethernet).
RJ45 LOOPBACK DRIVERS
It provides functional test coverage of the devices whose device drivers support the Ethernet loopback test. The netlbtest replaces the gemtest previously included in SunVTS. Chapter 40 Ethernet Loopback Test ( netlbtest)
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