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Vswitches and vrouters are very important devices in the network, but they also encounter many faults during use. In fact, users can try to solve the problems themselves, the following describes how to solve common switch faults. As a very important

The problems related to switch faults are described here. There are many reasons that affect switch faults, such as stack module, management module (also called control module), and extension module. The failure rate of these modules is very

For the data center (DC), it is no longer a problem to increase the computing capability by 60% while reducing the overall volume by 300%. As early as a year ago, Gartner had made such predictions. Therefore, the key question is what improvements

I. requirements covered by Secure Access A network-based security solution must be an end-to-end security architecture. That is to say, when designing an initial network security solution, we must consider the security threats and risks that may be

Recently, some engineers who often work at the data center site have doubts about whether the technologies used by the Data Center (DC) will continue to improve. The "change" of the data center mentioned in this article is actually to ensure that a

As mentioned above, the traditional data center aggregation switch serves as the gateway. To improve HA performance, the dual-host redundancy construction mode is basically adopted. As data centers enter the virtualization era, the number of

In the past, when we tested network performance (mainly throughput), we usually used the FTP test method to run the FTP server and client software on both ends of the test path, and transferred a large file, record the rate statistics displayed by

Data Packets "Packet" Packet) is the data unit in TCP/IP communication transmission, also known as "Packet ". Some people say that the Frame transmitted in the LAN is not a "Frame? Yes, but the TCP/IP protocol works on the layer 3 network layer of

STUN Technology: That is, the serial tunnel technology. This technology sends the SNA software package from the FEP3745/6) serial port to the vro, Which is packaged into an IP data packet and then transmitted in the network composed of the vro,

I. Introduction Currently, IP has become the routing protocol for most backbone network products. In some network environments, users have high requirements on the network, and any shutdown and storage and transportation losses will have a serious

Since its launch in 1990, the Open Shortest Path-first OSPF protocol enables routers to manage IP networks. The OSPF protocol is applied to the routing function, which enables various devices on the network to run efficiently. Recently, OSPF has

Route aggregation combines multiple routes and a route is usually implemented on the ABR. Although route aggregation can be performed between any two regions, it is recommended to do so in the direction of the backbone area. In this way, the

Edge and access devices must process large data and traffic types while constantly improving the service quality (QoS. To meet QoS requirements, network designers must implement advanced traffic management in their edge/access switch and Router

New requirements of marginalized NetworksIn order to meet people's increasing network needs, networks that provide constantly enriched services are bound to the development of marginalized networks. Edge users are increasingly involved in promoting

In recent years, the Core IP address and network market have undergone many changes. We are constantly seeing more and more new technologies, such as VoIP and wireless networks for on-demand applications. These new applications and services will

Mpls vpn is divided into two types: L2 mpls vpn and L3 mpls vpn. L2 mpls vpn is suitable for large enterprises that can build L3 networks on their own. l3 mpls vpn is suitable for small and medium enterprises that are responsible for maintaining

I. Preface There are many branches related to MPLS technology, such as MPLSRouting, L3VPN, L2VPN, MPLS Multi-cast, and MPLS QoS. Some applications and technologies, such as L3 VPN based on RFC 2547 bis, many ISPs at home and abroad have been

When the local area network is running normally, network congestion occurs suddenly. When the computer terminal sends and receives network data abnormally, the Ping test is performed on the two computers, and serious packet loss occurs.Fault

With the development of the information age, digital lines are emerging and growing at an astonishing speed in data transmission media with many excellent features such as fast speed, stable performance, and reasonable prices, it has a dominant

This type of interface is the most widely used virtual interface, which is used on almost every vro. It is commonly used for the following purposes.1 As the management address of a vroAfter the system administrator completes the network planning, a