Summary of LAN switch device management

What is a LAN switch? Is Traditional encapsulated storage (EMC/HDS) to be replaced by I-Swith smart switch Cisco? Based on these questions, let's talk about our own views and opinions. I hope you can study them.

As the fault location is located, it is easy to solve the fault. A friend estimates that all the signal lights of the faulty switch are flashing constantly, which may be due to the blockage of large-volume data. This blocking can easily make the switch "too busy;

As a result, he tried to shut down the power of the faulty switch device for a period of time, then re-connected it, and started the agent server system to prevent memory effect. After doing this, my friend once again observed the proxy server's internal network card signal, and found that this time it was working normally. Then he rushed to the faulty Switch site, he found that all the signal lights of the switch have returned to normal. It seems that the switch has been blocked.

After "Dredging" the network channel between the proxy server and the switch, a friend selects a terminal computer and tries to access the data content of the proxy server system in the system. I found that the speed of surfing the Internet was indeed back to normal. After that, I randomly selected other computers in the LAN to perform an online test. My friend found that all the computers could access the Internet normally.

At this point, the online crazy slow fault has been successfully solved, and the "sin" of this fault is naturally the LAN switch that is blocked by large data capacity. From the above troubleshooting process, this network fault is caused by the switch being blocked by heavy traffic data. If we directly troubleshoot the switch's working status, the troubleshooting speed will be very fast.

However, in the actual check of network faults, my friend simply thought that the switch equipment had stable performance and rarely experienced faults, so during the troubleshooting process, the switch problem was ignored, in this way, the troubleshooting will naturally lead to many detours.

To this end, we recommend that you do not focus on one of the nodes when checking for network faults in the future, but make comprehensive observation and judgment on the entire network connection system, in this way, network fault resolution efficiency can be improved. The difference between a smart switch and a traditional LAN switch is that a smart switch supports a dedicated "Blade" server with application functions.

These include Protocol sessions, remote images, tape simulation, and Intranet file and data sharing. From an architecture with additional processing capabilities for each port and highly integrated bandwidth between blade servers, to a relatively simple architecture where each server is equipped with a dedicated processor, the architecture of the memory and the input and output functions used for communication between ports. Intelligent switching has many different architectures.

Different merchants use different names, such as "intelligent exchange", "application exchange", and "organization exchange", to make themselves stand out in the competition. Take Cisco's MDS9000 series as an example. There are blades that support applications such as Veritas Volume Manager and ibm san volume controller SVC. These blades can coexist with other blades, including Fiber Channel ports and IP servers.

Brocade 7420 multi-protocol router is another example of a switch with advanced intelligence. It was initially used to support protocol conversion from a small computer interface to a fiber channel ), segmentation and routing of SAN and IP-based Remote Storage Using FCIP protocol. Other vswitches support some specialized blades, which cover the range from Maxxan to Marranti. CNT and McData also announced their plans to support specialized blades.

For smart switches and structured devices, pay attention to the potential performance and effectiveness impact. For example, will using a smart switch increase or decrease the input/output speed between your server and the storage subsystem? Will they run more functions and applications on LAN switches, or will these added devices reduce the input and output speeds of other devices? Do we need a redundant smart switch to avoid unexpected failure of components or devices?

Regarding whether your traditional storage system will be replaced by smart switches, I would like to say that these traditional storage systems will not disappear in the foreseeable future. On the contrary, you will see that the storage system we mentioned will be combined with smart switches and storage routers.

The purpose is to achieve convergence and disk aggregation. In fact, what is happening is that convergence and disk aggregation work together with data images, remote replication, and data movement, which are generally referred to as storage services and virtual storage. The most important thing is to understand the potential benefits of using smart switches and the impact of smart switches on your organization in terms of management, support, performance, and feasibility.

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