9 INDICATORS teach you how to deeply set the features of a Gigabit Ethernet Switch

The nine indicators teach you how to deeply set the functions of the Gigabit Ethernet switch. Let's take a look at the following test method for the functionality of the Gigabit Ethernet switch, which is not suitable for you, you can easily learn the details of the Gigabit Ethernet switch from the following nine indicators. If you are interested, try it.

As the core connection device of an enterprise network, a Gigabit Ethernet switch provides high performance and guarantees the speed of the enterprise network. To help readers better understand the overall performance of the Gigabit Ethernet switch, we use the industry's advanced IXIA1600 Testing Instrument to test nine main indicators involving the performance of the Gigabit Ethernet switch.

Of course, the test conditions are quite harsh compared to the actual working environment. We tested the performance mainly based on RFC2544 and RFC2285, and selected 64-byte, 512-byte, and 1518-byte Ethernet frame lengths.

Throughput

As one of the most important indicators for users to choose and measure the performance of a Gigabit Ethernet switch, the throughput determines the maximum rate of sending and receiving Frames Without Frame drop. During the test, we performed the task at full load. This test is configured as one-to-one ing.

Frame loss rate

This test determines the percentage of frames that cannot be forwarded due to lack of resources. The frame loss rate can reflect the performance of the Gigabit Ethernet switch during overload, which is useful for the operation of the Gigabit Ethernet switch in abnormal conditions such as broadcast storms. Back-to-Back this test considers the number of data frames that can be continuously forwarded by a Gigabit Ethernet switch without frame loss. The test of this parameter can reflect the size of the data buffer.

Latency

This indicator determines the time when a data packet passes through a Gigabit Ethernet switch. If the latency is FIFO (First in and First Out), it refers to the time interval from when the device receives the First frame to the input port to when the First frame reaches the end of the output port.

Initially, the sending rate is set to the rate obtained in the throughput test. frames are sent within the specified interval. A specific frame is set to a time mark frame. The time tag of the frame is recorded at the time of sending and receiving, and the difference between the two is the delay time.

Error frame Filtering

This test item determines whether a Gigabit Ethernet switch can correctly filter frames of certain error types, such as excessively small frames, ultra-large frames, CRC error frames, Fragment, Alignment errors, and Dribble errors, A small frame is a frame smaller than 64 bytes, including 16, 24, 32, and 63 bytes. A large frame is a frame larger than 1518 bytes, including 1519, 2000, 4000, and 8000 bytes.

Fragment refers to frames with a length less than 64 bytes, CRC error frames refer to frame checksum errors, and Dribble frames refer to redundant bytes after a correct CRC verification frame, the processing of Dribble frames by a Gigabit Ethernet switch is usually to correct the frames and forward them to the correct receiving port. Alignment combines the CRC and dribble errors, the frame length is not an integer error frame. This test is configured with One-to-multiple ing.

Back Pressure

Determine whether the Gigabit Ethernet switch supports preventing packet loss when the external data frame is blocked from being sent to the congested port. Some Gigabit Ethernet switches back-to-source addresses are blocked when the sending or receiving buffer overflows. The Gigabit Ethernet switch uses X 3 Traffic Control during full dual-work hours for the same purpose.

This test sends data to one port through multiple ports to check whether back pressure is supported. If the port is set to half duplex with back pressure, no frame loss or collision is detected. If the port is set to full-duplex and throttling is set, the throttling frame should be detected. If no back pressure is set, the total number of sent frames is not equal to the number of received frames.

Head of Line Blocking, HOL)

This test determines how congested ports affect the forwarding rate of non-congested ports. During the test, port A and port B are used to send data to port C to form A congested port, while port A also sends data to Port D to form A non-congested port. The result shows the number of received frames, the number of collision frames, and the frame drop rate.

Full Mesh

This test is used to determine the total number of frames that can be processed by a Gigabit Ethernet switch when all its ports receive data. Each port of the vswitch sends frames to all other ports in a distributed and cyclic manner while receiving data from other ports at a specific speed. We use the full mesh method to test Gigabit Ethernet switches for more demanding test environments.

Partial Mesh

The maximum capacity of the Gigabit Ethernet switch is tested in a stricter environment. frames are sent in a mesh to multiple receiving ports from multiple sending ports. We use this test method to test the Gigabit Ethernet switch. Each m is corresponding to 10 MB ports, and the remaining MB ports are used for full mesh testing.