Detailed explanation of the six key parameters of the router
With the gradual popularization of broadband networks, routers have been more and more widely used, and the broadband routing market has been derived and developed. Various manufacturers have introduced router products with various functions and numerous names, making most of them want to buy routers but lacking them. Basic technology consumers have no choice, so today we talk about several major parameters of the router, if you do not know much about the router, then select the router according to these parameters
1. Number of WAN ports
Multiple WAN routers must have sufficient performance first, and have a surplus with respect to the export bandwidth. If the processing capacity is limited, multiple WAN interfaces are purely furnishings. Now there are different brands of multi-WAN routers on the market in sales, performance varies greatly, we must choose, we must first examine the performance, if it is ARM7 processor, the main frequency is less than 100M, performance is basically not enough to do more WAN port.
2. With the number of machines
The number of belts is very intuitive and well understood, but it is only an estimate and experience. Everyone must pay attention to the above mentioned errors when referring to this data. At the same time, when examining the credibility of the data, the credibility of the manufacturers who provided the data should be examined.
Throughput is LAN-to-WAN Throughput, which should generally be the test data obtained when NAT is turned on and the firewall is turned off. There are two methods, Smartbits test and Chariot test. The results obtained can be quite different. According to the current general hardware capabilities, Smartbits big bag test data is very easy for everyone to reach the line speed, just like testing university students' intelligence, the title is 1+1=? Everyone can answer it, it's better than nothing. Therefore, to do an objective assessment, the problem should be difficult, compare 64Byte packet test data, and make judgments. Of course, if you have NAT hardware acceleration, turn it off and test again. As far as the Chariot test is concerned, comparisons should be conducted in the same test environment and method and with the same number of connections. However, in real network applications, it is almost impossible to be single-connected, so Chariot tests are best performed under multiple connections. Generally, you can basically choose 100 pairs of connections. In short, a single Throughput data is meaningless, it must be shown that the data is measured by what method is useful, the comparison of the performance must be compared in the same test environment and method is fair and meaningful. The best way is to look at the Smartbits test NAT to turn on LAN-to-WAN Throughput of 64 Byte packets.
Ordinary users simply don't need to understand how big Flash is. Just look at the features to meet the needs. At most, it's enough to look at the user interface.
5. Memory capacity
In general, 1M~4M Bytes are minor, 8M Bytes are moderate, and 16M Bytes or higher are large. In addition, we must pay special attention to the fact that many dealers and even vendors mention only the memory when they mention M. At this time, we must ask whether it is Byte or Bit. The memory can use Byte as the unit, or you can use Bit as the unit. The difference between the two sounds is 8 times the capacity (1 Byte = 8 Bit)! B is generally used to represent Byte, lowercase b indicates Bit, people with ulterior motives will do things here and there, and some not standard units, there are also signs of b. You can check it out on the chip manufacturer's website. Some lawbreakers have even used the polished chip to make fake on the silk screen of the chip, so it is very important to choose honest and trustworthy manufacturers' products.
6. Processor clock speed
In general, the main frequency of the processor is lower than 100M or lower, 100M~200M medium, and 200M or higher is higher. Also look at what the processor core is, 80186, ARM7, ARM9, MIPS or Intel Xscale? How large is the Cache capacity? Is single-CPU or multi-CPU distributed processing? 80186, ARM7 kernel processor is the typical configuration of the first generation broadband router, the performance is low, the mainstream manufacturer has not used. ARM9, MIPS core processor is currently the mainstream. The Intel XScale architecture is an advanced network processor for high-end products. Cache capacity of 8K or less is small, 16K is common, and 32K or more is big. General processors are single CPUs, and multi-CPU distributed processing is a high-level processor with high performance. Can also be a closer look ARM9 is an ordinary type of 920T/922T/940T or enhanced 926E/946E/966E, MIPS is 2K, 3K or 4K, 5K, different models of performance and structure will be very different