Preventing proper natural disasters can avoid router Lightning Protection (1)

Another thunderstorm season! At this time, lightning strikes on electrical appliances occur from time to time. For home users, a router is often damaged by lightning strikes on other devices. Therefore, economic losses are inevitable. For some places for business, such as Internet cafes, retail businesses, and enterprises that rely on the Internet for business, lightning strikes will not only cause hardware losses, business Suspension or contact inconvenience caused by the network, resulting in service interruption, it is impossible to estimate.

Many network management systems actually have a good concept for lightning protection. However, most enterprise managers are not aware of this issue and think it is unnecessary to take preventive measures. In fact, in areas where lightning strikes often occur, for example, most provinces in South China and East China, whether in urban or rural areas, even if the routers are placed indoors, the chances of lightning strikes are quite high. In addition, many cases of lightning strikes are often accompanied by damage to ADSL cats, switches, or other devices. Therefore, it is necessary to spend hundreds of dollars to prevent them.

For example, the optical fiber in the network is generally not afraid of lightning strikes, but the metal shielding layer is not grounded. The power supply of the server room is grounded, but the switch power supply of each building is not grounded, no power Referer is installed, and no network Referer is connected to the vswitch's entrances and exits. In case of lightning strikes, the Overvoltage Caused by twisted pair wires can easily damage the equipment.

The first threat to users is the power supply line, and the second is the ADSL Broadband line. Lightning strikes will, on the one hand, lead to induced current, resulting in powerful electric pulse and surge in the power supply, this directly results in damage to the routing device. In addition, twisted pair wires also generate strong induced current, and even directly encounter lightning strikes, which directly leads to damage to the LAN interface of the router or even the router.

Damage to routers by lightning

Lightning enters the LAN or wide area network, and the powerful energy is exploding in the first electronic component that receives energy. We can see a piece of burnt black, and all the related small components are burnt black, this is generally due to high energy and direct lightning attacks. For example

Figure 1: serious lightning injuries

If the energy is small, the components may be damaged, and the components may not be damaged. Therefore, it can be seen that some small components are burnt away.

Figure 2: Light lightning damage

Figure 3: Lightning strikes and internal injuries sometimes do not show problems in appearance

Because the internal lines of electronic components are very fine, although the external network seems to be only slightly burnt, the internal lines are often damaged. What's even more terrible is that apart from the focus of components, some components may not be completely visible on the outside, but the internal lines are close to destruction.