Summary of Main Indicators of Huawei Gigabit Switches

Huawei and Cisco occupy most of the market share of the networking equipment. As one of the mainstream devices in the market, GE switches are definitely a battle for the future. Next we will analyze the parameter standards of various indicators of Huawei Ge switches. As the core connection device of the enterprise network, the Huawei Gigabit Switch is the main standard to ensure the speed of the enterprise network. To help readers better understand the overall performance of the Huawei Gigabit Switch, we use the industry-leading IXIA1600 Testing Instrument to test nine main indicators related to the performance of the Huawei Gigabit 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 Huawei Gigabit Switch, the throughput determines the maximum rate of frames to be sent and received 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 Huawei Gigabit Switch during overload, which is useful for the operation of the Huawei Gigabit 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 the Huawei Gigabit Switch Without Frame loss. The test of this parameter can reflect the size of the data buffer.

Latency

This indicator determines the time when data packets pass through the Huawei Gigabit 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 the Huawei Gigabit 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 indicates a frame with a length less than 64 bytes, and CRC indicates a frame checksum error, dribble frames refer to redundant bytes after the correct CRC Check frame. Huawei gigabit switches usually correct the Dribble frames and forward them to the correct receiving port, alignment combines a CRC error and a dribble error to indicate an incorrect frame whose frame length is not an integer. This test is configured with One-to-multiple ing.

Back Pressure

It is determined whether the Huawei Gigabit Switch can prevent packet loss when it blocks external data frames from being sent to the congested port. Some Huawei gigabit switches use back-to-source addresses to send blocked signals when the sending or receiving buffer overflows. For the same purpose, the Gbit/s switch uses X traffic control during full dual-work hours. 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 processed by the Huawei Gigabit Switch when all its ports receive data. Each port of the Huawei Gigabit Switch sends frames to all other ports in a uniform distribution and loop manner while receiving data from other ports at a specific speed. We used the full mesh method to test the Gigabit backbone Huawei Gigabit Switch for a more demanding test environment.

Partial Mesh

In a more rigorous environment, the maximum capacity of the Huawei Gigabit Switch is tested. frames are sent in a mesh to multiple receiving ports from multiple sending ports. We use this test method to test the Gigabit access to the Huawei Gigabit Switch. In this test, each m is mapped to 10 m ports, and the remaining M ports are used for a full mesh test.