- ETHERNET LOOPBACK TESTING DRIVERS
- ETHERNET LOOPBACK TESTING DRIVER
- ETHERNET LOOPBACK TESTING OFFLINE
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:
ETHERNET LOOPBACK TESTING 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.
ETHERNET LOOPBACK TESTING 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).
ETHERNET LOOPBACK TESTING 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. In this case, an old Ethernet Cable is used, removed the cable isolation coat and connected the wires as described above.Īt the end, a heat shrink tubing is put around it to prevent any short circuits.Chapter 40 Ethernet Loopback Test ( netlbtest) In this case, you need to connect two more wire pairs:Īn example of a self-made self-loopback cable: Those are used to test interface rx/tx operations on GigabitEthernet (1gbit/sec) interfaces. To use the plug on appliances from other manufacturers too, that maybe need a higher throughput during testing, it may be needed to create an eight pin self-loopback plug. This is the simpliest version of a four pin self-loopback plug which is used to test interface rx/tx operations on FastEthernet (100mbit/sec) interfaces. In the case of the FortiGate HQIP test, it is already enough to connect the following conductor wires: It is necessary to have a RJ45 connector or an Ethernet cable with a RJ45 connector attached. It is very easy to create a self-loopback cable or connector plug by yourself. In comparison to normal 'loopback' links, where one NIC is connected with another NIC on the same appliance, the self-loopback does realize the loopback inside the same NIC. Those cables are often descibed as selfloop or interface test cables.
Please restore factory reset or use port mode to perform the test WARNING: This test can only pass with factory configurations. Network Interface Loopback Test - Please connect ethernet cables: This request looks like the following CLI output: On FortiGate models, it is necessary to connect a self-loopback cable on some ports during the HQIP test. This article describes how to make a self-loopback cable to perform HQIP test.
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