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exchange chip that can generate Gigabit and MB ports; one is a CrossBar chip that only outputs Internal High-Speed interfaces (usually at a rate of over 10 Gbit/s) for interconnection between modules. Currently, Cisco, Extreme,, gangwan, and other vendors have launched CrossBar-based core switch products. However, many products on the market still use gigabit port interconnection, it is mainly intended for
) protocol stack Implements TCP/IP, 802.1D, and 802.1Q protocols to provide good interfaces for upper-layer applications; 3) Application Layer The main modules include the routing module and network management module. The routing module implements the RIP and OSPF protocols to implement the main functions of layer-3 routing. The Network Management Module implemen
slows down significantly. Some access layer switches and some small routers even crash, and the CPU usage of the core layer-3 switch reaches 100%, the operator has to Block ICMP packets. Broadcast exception packets: broadcast is a necessary way to implement certain protocols. Broadcast packets are sent to all hosts in
Layer-3 switches are quite common, So I studied how layer-3 switches can ensure network security. Here I will share with you, hoping to help you. A high-performance switch Cisco Catalyst 4006 with multiple 1-gigabit ports and 10-Gigabit ports is placed in the center of the s
At present, the modular multi-layer switch is widely used. Many people may not understand the comprehensive explanation of the modular multi-layer switch. It does not matter. After reading this article, you will certainly have a lot of GAINS, I hope this article will teach you more things. Cisco Systems, the world's leading network equipment vendor, recently anno
The Cisco layer-3 switch is another core switch developed by Cisco. It aggregates the bandwidth of the backboard of the switch that is stacked together, in this way, the total backplane of the switch stack is the sum of the bandwidth of several stack switches. Note that not
bring great benefits to the future expansion of the network. VLAN partitioning by routers is a cost-effective method in small and medium-sized enterprises. However, VLAN partitioning by routers seriously affects the network performance of enterprises, therefore, layer-3 switches with routing functions are widely used in VLAN networks of large and medium-sized enterprises. However, we must be clear that a V
High intelligence, high availability, and high reliability are the characteristics of multi-layer intelligent optical fiber switch. Although its technology is not very mature yet, it has been recognized by people. Cisco Systems recently announced that it will launch the CiscoMDS9100 series of multi-layer smart Optical Fiber s
switches are generally 10 M, M Adaptive, and the network card will also buy M, use twisted pair wires to connect the network card with any port of the switch, install the TCP/IP protocol. First, configure two IP addresses on one network card to go To the TCP/IP protocol attribute, and click "Use the following IP Address:" to enter one of the allocated IP addresses and mask, next, click "advanced" and click "add" under "ipsettings-IP Address" to enter
Layer-3 switches use a hardware exchange mechanism to implement the IP routing function, which greatly improves the running efficiency of the entire network and solves the problem of traditional router software routing speed. To describe the role of a layer-3 Switch in many network devices, it is not described as a "mainstay. In campus networks and urban educatio
distances are sufficient for small networks in the same building! Using the uplink switch fibre port cascade now, more and more switches (except Cisco switches) provide a uplink port, making the connection between the core switches easier. The uplink port is a port that is
Switches are constantly evolving along the speed, multi-layer switching, and intelligent exchange directions. A new trend is that intelligent exchange at the edge access layer drives the development of intelligent exchange from the core of the network to the edge. In the past, the network architecture only adopted
A typical LAN is to connect a core switch with a layer-3 Switch to several Branch switches (not necessarily with layer-3 switching ). We assume that the core switch name is com, and the Branch switches are par1, par2, and par3 res
switches are generally used in large-scale Local Area Networks, usually in the chassis and deployed on the core layer or aggregation layer, with extremely high switching board bandwidth and data throughput. The middle-end and low-end three-layer
module usually requires a higher cost. In addition to the fault tolerance mechanism on the hardware, some measures can be taken on the protocols at different layers to help users improve reliability, such as the layer-2 Spanning Tree mechanism, supporting 802.1W and 802.1 S, this enables faster and more efficient convergence, and implements a layer-2 structure of global load balancing. In Port redundancy,
low-end switch with high reliability, a dedicated high-performance RISC processor is absolutely required. In fact, the combination of frame Processing Unit (FP) and Vector Logic provides unparalleled performance. An independent application processor (AP) can assist FP. Like FP, AP is also a high-performance CPU. AP controls all operations except Frame Forwarding: High-Level bridging and routing, such as Spanning Tree and OSPF protocols, SNMP and HTTP operations. Through the above technical anal
, when users in China purchased network equipment, A 48 v dc module usually requires a higher cost. In addition to the fault tolerance mechanism on the hardware, some measures can be taken on the protocols at different layers to help users improve reliability, such as the layer-2 Spanning Tree mechanism, supporting 802.1W and 802.1 S, this enables faster and more efficient convergence, and implements a layer
have spent a lot of time on these security maintenance. In view of this situation, Shanghai Boda believes that the current network bottleneck of radio and television is the convergence layer equipment. The aging of the Convergence layer equipment leads to the bottleneck of the current radio/TV network. The convergence layer switch can achieve the following funct
purchased network equipment, A 48 v dc module usually requires a higher cost. In addition to the fault tolerance mechanism on the hardware, some measures can be taken on the protocols at different layers to help users improve reliability, such as the layer-2 Spanning Tree mechanism, supporting 802.1W and 802.1 S, this enables faster and more efficient convergence, and implements a layer-2 structure of glob
maximize the use of network resources. the application layer switch is placed on the core layer or aggregation layer instead of close to the lower layer intervention layer, this allows network managers to allocate network resourc
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