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
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
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
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
The 1-gigabit layer-3 switch is quite common, so I have studied the 1-gigabit layer-3 Switch with high port flexibility. Here I will share it with you and hope it will be useful to you. After the success of the Gigabit center
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
Company for business needs, commissioning network Netgear GS728TP Poe switch, Partition VLAN and other services, after all debugging is complete. Again habitually save restart the device. Results after this reboot. The inexplicable wonderful ping does not pass the address of the management switch. Not to mention using a Web interface to manage the
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
Beginner: I learned about the basic features of a layer-3 Switch. Some time ago, my colleagues asked me questions about the basic features of the layer-3 Switch. At that time, I did not give a positive answer, I was also the first
Layer-3 switches are quite common, so I have studied the comprehensive description of layer-3 switch technology. Here I will share it with you and hope it will be useful to you. The emergence of layer-
A device with layer-3 switching is a layer-2 switch with layer-3 routing, but it is an organic combination of the two, it is not simply to overlay the hardware and software of a router device on a LAN
In order to help enterprise users better understand the meaning of layer-3 Switch, understand the various new technologies supported by the leading layer-3 switch in the current market, and their position and role in the next-gene
We know that the core part of a network is the key to the entire networking, and many enterprises have chosen layer-3 switches as the core of the entire network, A layer-3 switch is a common vswitch with a route function added. Do not underestimate the added routing function
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