Why is 100 megabytes of fiber only a dozen megabytes after being output through the router?

There are many reasons, such as at the public network level:

1. The server-side export bandwidth that provides you with download or transport services is insufficient or has traffic policies, such as allowing traffic bursts for an initial period of time.

2. The isp that provides network access services for you will have similar strategies. For example, it will ensure that enterprise-level or important user traffic will go first. Ordinary user traffic is random or tail-drop (qos), triggering the retransmission mechanism of the client-side tcp, resulting in The rate drops. Or provide users with sub-optimal routes.

In general, the export bandwidth of the public network is insufficient (for example, a small isp has two public network exports, and broadband has a total of 2Gbps, but he sold the broadband to 500 or even 1000 users. It is incredible, telecommunications Do the same).

There are also user-level factors. Because you don’t know what equipment you are talking about, it is generally understood as a hundred and ten ordinary household equipment.

1. The general wired internal network and the network segment transmission are difficult to fill the bandwidth of the second layer backplane, but if it is the single-band b/g/n wireless half-duplex mechanism, the performance of multi-terminal simultaneous data transmission will be The line speed drops, the more people / the longer the transmission time, the lower the rate.

2. A slightly more professional device will indicate how much Gbps/Mbps the backplane bandwidth of the second layer of the device is. The forwarding rate of the three-layer routing mode (cross-network segment, cpu calculation route) in the packet is pps, you open After the nat, how much is it, when the routing strategy or security policy is opened, respectively, Xiaomi is not bad in the home field, but do you see it? Is it that many people bought and brushed third-party firmware? In general, the equipment is too garbage or the firmware is too garbage. The manufacturer is not professional and only pays for the garbage.

You can't control the factors on the front of the public network unless you add money to buy vip or change operators. At the client level, if you are professionally separated from the edge routing gateway and the access device (wired access. Incoming/wireless access), don't bother it on one device, it will be under pressure. Or simply go buy a 300+ dual-frequency router that supports ac, it is better to brush third-party firmware.

Don't buy the so-called dual-frequency Gigabit router with 100-megabit wired access. This kind of thing is only done by domestic unscrupulous manufacturers.