1) layer-2 Exchange Technology
The layer-2 switching technology is relatively mature. The layer-2 switch is a data link layer device that can identify MAC locations in data packets.Address information, which is forwarded based on the MAC address, and the corresponding MAC ad
Simply put: Layer-1 switchOnly physical layer protocols are supported (one phone-controlled switch can be called ???)L2 SwitchSupports physical layer and data link layer protocols, such as Ethernet switches.L3 SwitchSupports physical
Configuration example of cisco router and layer-3 Switch environment, cisco layer-3 SwitchSimple environment configuration instance for cisco router layer-3
Example:
3026
2012
5012. The value of 2nd bits is 0 ~ 4 indicates that it is a layer-2 switch.
3550. The fifth digit is 5 ~ 9 indicates that it is a layer-3 switch.
LI (LitesoftwareImage) indicates that the device is a weak feature version.
SI (StandardsoftwareImage) i
1,Layer-3 forwardingYesRoute information is requiredThe route selection in the forwarding process determines the final egress of the message,L3 SwitchJust put thisRoute functions are integrated into the switch ChipGo.
2,Route SelectionExistExact matchAndLongest matchTwo methods.
2.1,Exact matchThat is, the destination IP address and the route address information
of using Server Load balancer to improve the scalability, availability, and manageability of Server clusters. This chapter mainly discusses the deployment of Server Load balancer and several solutions for deploying Server Load balancer in the existing network. We will also discuss how to design highly available solutions to implement fault tolerance for different network components throughout the network, including Load balancer.
Before discussing the network structure, we need to understa
when he cannot find the address, and the hub is only responsible for forwarding the email regardless of the Bounce Message.
Vro
A Router operates at the network layer, the third layer in the OSI Layer-7 network model. It works by removing the information of the second layer (data link
Performance Tests on layer-2 and layer-3 vswitches with 24 ports and all-gigabit vswitches have encountered many problems recently. Experts have said that QoS ensures port congestion, high-priority data is processed first. It makes sense to improve the utilization of 24 fully-gigabit switches with insufficient bandwidth.
Three-tier competition
China 3 layer Switch VLAN isolation192.168.1.0---------g1/0/1 S SW g1/0/2-------192.168.2.0192.168.3.0-----------------------|192.168.4.0-----------------------|Prohibition of 1.0, 3.0, 4.0 and 2.0 visits[H3c]acl Num 3000[H3c-acl-adv-3000]rule deny IP source 192.168.1.0 0.0.0.255 destination 192.168.2.0 0.0.0.255//Forbidden 1.0 Access 2.0[H3c-acl-adv-3000]rule de
Experts tell you what a layer-3 switch is. Now every household has their own computer and understands what a layer-3 switch is. At that time, the layer-
Experiment on single-arm routing using a layer-3 Switch
In the real environment, sometimes the gateway is not necessarily enabled on the router, sometimes the single-arm routing function is not necessarily connected to the interface on the router, you can use a layer-3
Three-tier switch has become one of the mainstream switch types in the market. Here we mainly introduce the advantages of using three-tier switch. This article will tell you that the three-tier switch has a high technical level, not only does it look beautiful, but it also looks beautiful! So what is the role of
There are many things worth learning about layer-3 switches. Here we mainly introduce the basic knowledge of layer-3 switch technology. A switch is the "cornerstone" for building a network platform, also known as a network
What I want to tell you in this article is: the layer-3 switch is very technical, not only "looks beautiful", but also very beautiful to use! So what is the role of layer-3 switches in the Construction of Campus Networks and urban education networks? What services does a
security. Therefore, the use of VLAN in the initial design of the network can 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 netwo
A layer-3 Switch uses a new technology that combines layer-3 routing and layer-2 switching. If a large network is divided into small local networks by department, region, and other factors, the
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
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