Why routers avoid broadcast storms .

The principle of router isolation broadcast storm: in fact, it is very simple, the router will not send the broadcast packets received by a certain interface to the network where another interface is located, therefore, the broadcast storm in one network segment will not have any impact on another network segment, but the division of subnets may not be, because if it is only a subnet divided in the same physical network: for example, if there is no router division between these two network segments, it is directly connected through the switch, once a host sends a large number of broadcast packets, The data traffic of all network segment hosts is affected, as is the case with a network segment.

Simply put, a broadcast storm occurs when broadcast data floods the network and cannot be processed, and occupies a large amount of network bandwidth, resulting in normal services being unable to run or even completely paralyzed. A data frame or packet is transmitted to each node on the local network segment (defined by the broadcast domain) is broadcast; Due to the design and connection problems of the network topology, or other reasons, the broadcast is copied in a large number of network segments, propagating data frames, resulting in network performance degradation and even network paralysis, which is called a broadcast storm.

A broadcast storm is caused by a design problem of the network topology or a loop caused by a large number of broadcasts being replicated and propagated in the network segment, resulting in network performance degradation or even paralysis.

After the broadcast storm broke out, all the broadcast packets transmitted in the network were broadcast packets, and all the computer processed were broadcast packets, and normal data packets could not be processed and processed. When the network cable is unplugged or the switch is turned off, the broadcast storm is contained and normal communication is restored.

There are many reasons for broadcast storms, such as a faulty NIC or a faulty port.

It is important to note that the switch can only isolate the collision domain, not the broadcast domain. In fact, when the number of broadcast packets accounts for 30% of the total communication, the transmission efficiency of the network will be significantly reduced.

In general, there should be no more than 100 computers in a network with multiple communication protocols, and no more than 150 computers in a network with one communication protocol. If the number of computers is large, the network should be separated by dividing VLANs and dividing the large broadcast domain into several small broadcast domains to reduce the possible harm caused by broadcast storms.

The message goes to the route, not to the machine.

Sort out the network architecture, don't wired casually to cause loops, don't let the computer get viruses, and it's okay to use it normally.

Router isolates broadcast storms.

The original Bimu is absolutely reasonable: In fact, it is very simple, the router will not send the broadcast packets received by a certain interface to the network where another interface is located, therefore, a network segment.

The broadcast storm will not have any impact on the other network segment, but the subnet division may not be, because if it is only a subnet in the same physical network: for example, if there is no router partition between the two network segments and they are directly connected through the switch, once a host sends a large number of broadcast packets, the data communication of all network segment hosts will be affected, as in the case of one network segment.

Simply put, a broadcast storm is when the network is flooded with broadcast data that cannot be processed and consumes a large amount of network bandwidth.

As a result, normal services cannot be operated, or even completely paralyzed, which causes a "broadcast storm". Each node on which a data frame or packet is transmitted to the local network segment (defined by the broadcast domain) is a broadcast; Due to the network topology.

design and connection problems, or other reasons that cause the broadcast to be replicated in a large amount of wear in the network segment, propagate data frames, resulting in network performance degradation, or even network paralysis, which is a broadcast storm.

Hardware failures of network equipment can cause broadcast storms and slow down network speeds.

The router is actually a device that sends packets to a specific host according to the address contained in the header of the packet, and the router will keep a constantly updated routing table every time a packet is received, the router will match the header address information with the routing table to determine the recipient of the packet.

Therefore, the router can determine which packets to be accepted, which packets are not to be accepted, and those packets that are not accepted will be automatically forwarded to the next route by the router, and so on until a router with a destination address routing table is found.

If you know the principle, it is easy to distinguish whether the router will affect the network speed, because the directional delivery function of the route only accepts the required datagram, so the routing can improve the network speed and LAN efficiency.

Packets are switched and have a small impact.

Under normal circumstances, the factors affecting the network speed due to the switch can be ignored.

Internet speed is generally affected by the network structure, the number of users, interfaces, and the speed of router transfers.

Large networks, if you don't allocate your data, will affect your speed, and small networks won't

The principle of the first switch is to adopt the principle of the first switching machine, which can allow multiple pairs of ports to send or receive data at the same time. None of the ports have exclusive bandwidth. So your computer is the same land defeat.

The principle of the switch is to increase the bandwidth, so it does not affect the network speed!

Both of these work with pulsed currents, which naturally create a magnetic field, which then causes point deflection, and then your internet speed will be slow.

It depends on how big the network you are on. Generally not visible.

Broadcast storms are mainly solved by dividing VLANs, and Xiaomi routers cannot divide VLANs. It is recommended that you use a VLAN router as a gateway to divide VLANs, and the Mi router only uses wireless AP access.

Reasonable VLAN segmentation. Wireless devices have a large number of broadcast packets, which is very prone to broadcast storms. The number of wireless devices that can be accommodated in a VLAN should be limited to 200.

The performance of the primary routing gateway must be strong, and the Internet access behavior management policy and flow control policy should be set.

Regularly detect network issues such as broadcast storms.

For example, use the WSG gateway to configure a bandwidth throttling policy

Run network health checks on a regular basis to detect intranet issues.

Go to the background settings of the router. At the bottom of the router there is a management address and account password. You can read the manual.