layer 3 ethernet switch

distance. This technology is the Ethernet over the telephone line. VDSL signals are transmitted at the physical layer and Ethernet signals are transmitted at the second layer. It can extend the transmission distance from the original 100 meters to up to 5 kilometers, which is especially suitable for the city range and

, the traditional LAN has been more and more exceeded its own load, the switching Ethernet technology came into being, which greatly improved the performance of LAN. Compared with the LAN topology of shared media based on bridge and router, the network switching function significantly increases the bandwidth. Switching technology to join, we can establish a geographically dispersed network, so that each port of the LAN

The Application of Fiber-Optic Ethernet switches is becoming more and more extensive. Here we mainly introduce the ACCESS scheme of fiber-optic Ethernet switches and its practical application problems. The fiber-optic Ethernet technology is the integration and development of the two mainstream communication technologies, that is,

The emergence of 10-ge switches completely realizes the convergence of private networks to the public network, and it can provide a throughput of more than one thousand G in one second, which is not supported by traditional switches. As compatible with the latest Ethernet technology, 10-Gigabit Ethernet is not only a "high-speed rebuild" of Ethernet. For the firs

switch cache. Forwarding/filtering: when the destination address of a data frame is mapped to a MAC address table, it is forwarded to the port connecting to the target node instead of all ports. If the data frame is broadcast or multicast frame, it is forwarded to all ports ). Eliminate loop: When a vswitch includes a redundant loop, the Ethernet switch avoids l

Switch type (rack style, fixed-profile with/without expansion slots The rack switch is a slot-type switch that is scalable and supports different network types, such as Ethernet, Fast Ethernet, Gigabit Ethernet, ATM, Token Ring, a

develop new test cases for maximum protocol coverage. The completeness of protocol coverage is the key to the selection of consistency testing products. For L2 switches, tests on the basic Ethernet protocol, spanning tree, and multicast protocol are required. For L3 switches, tests on routing protocols such as RIP, OSPF, and BGP4 are required, devices that support IPv6 also need to test the IPv6 protocol and IPv6 routing protocol, and perform consist

complex. At that time, the main criteria for network management were: whether devices could be managed, and whether Ethernet switches could be managed. As enterprises increase their network requirements, the network structure becomes more and more complex. network management functions can be better integrated with Enterprise Services only by better controlling the network, so that the IP Business Invested by enterprises can be better carried out. Thi

product may require the following key technologies and performance: high reliability, high-end port density, service quality assurance and other functions. The Fibre-optic Ethernet business is more cost-effective than other broadband access, but so far it has been used only in office buildings or in buildings where fibre optics have been laid. The strategic value of this new method of using Ethernet is n

processing the error packet, convert a search table to an output port to send packets. Because of this, the storage and forwarding method is insufficient when the data processing latency is large, but it can detect errors of data packets entering the switch, effectively improving network performance. In particular, it supports switching between ports at different speeds to ensure collaboration between high-speed ports and low-speed ports.

Today's recommendation: cisco switch module Ethernet application details, familiar with the following cisco switch module knowledge point, you only need to spend a few minutes to understand the cisco switch Module Settings. There is also a diagram below, and other related information will be mentioned in this article.

Two-tier switch:The second layer switching technology is more mature, two layer switch is a data link layer device, can identify the MAC address information in the packet, according to the MAC address to forward, and these MAC addresses and corresponding ports recorded in their own internal table of addresses. Specific

domain.The partitioning process of VLANsSingle Switch PartitioningCan be partitioned directly in the switch configuration.multi-Switch partitioningYou must explicitly set the shared port between the access port and the switch for each VLAN.About the division of VLAN, here is not detailed, can self-Baidu.Low to High sp

be transmitted to another Ethernet switch port through TRUNK. Analyze the working principle of enterprise-level switches from different perspectives Install a fixed port switch in Depth Working principle of smart switch with deep resolution Comprehensive introduction to features of

as the core. Star: easy to manage, easy to expand, dedicated network devices are required as the core node of the network, more network cables are required, and high reliability requirements on core settings are required. A dedicated network device, such as a hub or vswitch, is used as the core node. Each host in the LAN is connected to the core node through twisted pair wires, forming a star structure. Although the star network requires more cables than the bus type, the wiring and connectors

Ethernet signal is transmitted in the second layer. It can extend the transmission distance, from the original 100 meters to reach the farthest up to 5 kilometers, especially suitable for the metropolitan area, and the speed remains unchanged, any cable can support, greatly facilitate the application. System development From an architectural perspective, Ethernet