Two methods for communication between different VLANs (single-arm routing and layer-3 Switching)Test environment: Third data center, second floor, east suburbInvestigational device: Catalyst 2950-24 (SW3)Cisco 2611 (R2)Catalyst 3750 SERIES (with two SD interfaces, S8----SW-2L)Real machine (PC5, PC6 ).Objective::1. Communication between different VLANs through single-arm Routing2. implement communication bet
As a new generation of network technology, VLAN provides a good solution to the problems of flexible configuration of network sites and network security, the following describes how to update a VLAN on a layer-3 switch.
The filter service is used to set boundaries to restrict Frame Forwarding between members of different VLANs and between different protocols usin
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
Whether the disadvantages of layer-3 switch technology affect its prospects. In terms of price, the prices of layer-3 switch products are generally at least 10 thousand yuan. The sales of L3 switches in the entire
[Architecture design] 3-layer infrastructure three-layer architecture
As long as you are a software practitioner, whether or not you are from a bachelor's degree, I believe there will be no stranger to the three-tier architecture. In a three-tier architecture, program code generated by software development is classified into the system presentation
In recent years, with the rapid development of Internet/Intranet and the wide application of the B/S computing model, the cross-region and cross-network business has experienced a sharp increase. The industry and users are deeply aware of the bottleneck effect of traditional routers in the network. A layer-3 switch can operate on the
Layer-3 switches are commonly used. Here we mainly analyze the differences between layer-3 switches and routers. Here we will share with you, hoping to help you. In recent years, with the rapid development of Internet/Intranet and the wide application of the B/S computing model, the cross-region and cross-network busin
Layer-3 switches are quite common, so I have studied new technologies in layer-3 switches. Here I will share them with you and hope they will be useful to you. CrossBar (CrossPoint) is called a cross-switch matrix or a horizontal-exchange matrix. It can well make up for some
We believe that with the development of the communication industry, layer-3 switches will be more stable and improved, bringing users a good network environment, in recent years, with the rapid development of Internet/Intranet and the wide application of the B/S computing model, the cross-region and cross-network business has experienced a sharp increase. The industry and users are deeply aware of the bottl
Layer-3 switches are quite common, So I studied how layer-3 switches fully Block DoS attacks. Here I will share with you, hoping to help you. Although global network security experts are developing methods to defend against DoS attacks, DoS attacks are ineffective because they exploit the weakness of TCP protocol. Conf
Layer-3 switches can transmit data between multiple port pairs at the same time. Each port can be considered as an independent network segment, far exceeding the forwarding performance between common Bridging networks.
What are the vro functions of a vswitch? What is the difference?
First, the HUB, that is, the HUB. Its function can be simply understood as connecting some machines to form a LAN. A vswitch,
Layer-3 switches use hardware to exchange and route data packets. To process high-level information about data packets in hardware, CISCO switches use a traditional MLS (multi-layer switching) architecture or a CEF (fast forward)-based MLS architecture.
1. Traditional MLS
MLS enables ASIC (application-specific integrated circuit) to be routed to data packets for
digital interfaces, including 64kbps and 2.048Mbps interfaces) you must use the G/V converter device. In branch nodes, high-end routers are generally not configured, and even low-end routers are several times more expensive than switches. Therefore, the layer-3 switching access solution is applicable to networks with larger scales and more downstream nodes, the more substantial the savings are.
High port d
the packet.The target mac is unknown. It must be a wildcard forwarding.The destination mac address is known and the destination mac address is the switch itself.Conclusion:When sw detects the received data frame and finds that the target mac address is a local interface address and the target IP address is not me, layer 3 forwarding is automatically enabled and
Mainstream layer-3 switches support security level and virtual subnet division. Today we will mainly explain some comprehensive applications of layer-3 switches in TMIS networks. With the rapid development of China's economy, the transportation volume of Railways has increased significantly, requiring the transition fr
In the traditional campus network mode, network interconnection is generally a multi-level switch connected to one or more trunk switches. The switches communicate with each other through routers, traditional routers work at the network layer of the OSI model and perform route computing and packet forwarding based on software. With the expansion of campus network, the increase of users, and the rapid develo
Layer-3 switches are quite common, So I studied how layer-3 switches can attack the virus. Here I will share it with you, hoping it will be useful to you. Currently, computer networks face two types of threats: one is the threat to information in the network, and the other is the threat to devices in the network. There
Both layer-3 switches and routers work on the layer-3 network. packet forwarding (or switching) based on IP addresses is not very different in principle. These two terms tend to be unified, the exchange router and route switch refer to the same thing. We can consider a
The following tests on L2 and L3 switches are implemented through a series of frames/data packets of different sizes. The minimum valid frame is 64 bytes, and the maximum standard frame is 1518 bytes, next, we will study the technology of layer-3 switches.
Therefore, enterprise users must test the energy efficiency of switches through a certain performance test. This test is basically the same as the test m
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