A layer-3 switch automatically configures routes between VLANs.

A few years ago, sales of laptops surpassed those of desktops. This book has won the favor of consumers for its portability, so wireless networks are more favored than traditional network cable pulling methods. Since WI-FI so popular, encounter this always dropped the number of the problem is more, encounter dropped what should be done? Next we will summarize the causes and solutions for the disconnection of the laptop.

If there is a thick wall between the wireless router and the notebook, the signal attenuation and interference will be great, thus affecting the stability of the Internet and leading to the disconnection of the wireless network card. In this case, you need to change the router location or use multiple routes for bridging.

In addition to the problem of the wireless router, it may also be the cause of this, that is, the cause of the wireless Nic. This is because the PSPM mode is incompatible.

PSPM is a wireless network energy-saving technology used to prolong the battery time of a laptop. It is called Power Save Polling Mode. This technology requires the support of wireless routers and laptops wireless NICs. However, some wireless routers do not support PSPM, which may lead to disconnection of the wireless network card.

There are two solutions: one is to set the wireless network card and the other is to replace the driver of the new wireless network card.

Method 1: system settings

1. Open Control Panel-network connection, right-click wireless network connection, and select Properties to enable wireless network connection attribute settings.

2. Click Configure to open the wireless network card configuration page.

3. select the "advanced" Page, find "Power Management" in the Left Border, select it, deselect the small check box before "use default" on the right, and slide the slider below to "maximum value "; click "OK ". Check whether the problem is resolved.

Method 2: Change the driver

The wireless network adapter commonly used in laptops is Inter 5100, such as Lenovo's notebook. The intel drive provided by Lenovo's official website should be of a relatively low version, and the discs (both 12.2 and 12.0) are also available at the time of purchase. An updated version 12 is found through online queries. 4. *** version, uninstall the original version 12.2, restart it, And then install the version 12.4 series. It is very stable.