Data packets are the data units transmitted in TCP/IP protocol communication. Aren’t LAN transmissions based on “frames”? However, the TCP/IP protocol operates at Layer 3 (Network Layer) and Layer 4 (Transport Layer) of the OSI model, while frames operate at Layer 2 (Data Link Layer). The content of the upper layer is transmitted by the lower layer …
There are many router failures, and many people still don’t know how to troubleshoot them. Below, using a NETGEAR router as an example, we will introduce a relatively complex fault that is quite representative. 1. Using a NETGEAR router as a WAN backbone NETGEAR router, after network setup was completed, it was discovered that the router’s 2M backbone egress …
After setting up a router, you might not configure it again for a long time, which can lead to forgetting the password. What should you do in this situation? Let’s take Huawei routers as an example to introduce this knowledge. I. Huawei routers save several different configuration parameters in different memory modules, as described below …
PPP, the Point-to-Point Protocol, is a data link layer protocol for point-to-point type lines introduced by the IETF. It is not a proprietary protocol and can interconnect equipment from different vendors, supports multiple protocols, provides optional authentication services, can compress data in various ways, supports dynamic address negotiation, and supports multi-link bonding …
As networks have evolved, routers have become increasingly widespread, with nearly every modern household using a router to share an internet connection. This article introduces some handy tips for using routers in daily life. As you may know, if a computer’s IP address is not on the same subnet as the IP address used by the broadband router, it may result in the inability to …
In modern office environments, networks are often quite complex, typically involving several network devices connected together, such as routers, switches, and so on. Adding a switch is fairly straightforward 鈥?it can usually be put to use almost immediately after connecting it. However, adding a router is much more troublesome; if not configured properly, it can cause …
When configuring a router, setting up access rules is always involved. If this part is configured properly, the entire network will be very secure and stable. This article uses H3C routers as an example to introduce some commonly used functions and how to set up access rules properly. 1. Restricting Website Browsing via HTTP Proxy Service. When starting the proxy serv…
For routers, we can use different egress methods depending on the situation. This is especially important in network environments built with high-end routers, where proper configuration is needed to ensure stable network operation. When configuring static routes, you can use either a next-hop address or an outbound interface …
We know that wireless routers have the functionality of wired routers, but wireless differs from wired in the following ways: 1. Wireless Router Compatibility Settings Some computers do not support WPA (touted as the most secure) encryption or have poor compatibility with it. Setting this encryption method can also lead to disconnections. WP …
The physical line segment from one node to an adjacent node is called a link. It requires the physical layer to provide data transmission and reception services, and provides the network layer with functions such as data packet encapsulation and network layer parameter negotiation. The sending and receiving ends exchange LCP packets to determine the necessary information for data transmission. 涓€銆佷娇鐢╠ …
