Labnario Huawei From Scratch

Simple Network Management Protocol (SNMP) is widely used for IP networks’ devices management and monitoring. Not only routers and switches can be managed using SNMP. It can be used with servers, modems, printers, etc. It is application layer protocol and is defined as IETF standard.

How SNMP works?

It operates based on the following components:

• Network Management Station (NMS), sends SNMP requests to query managed devices and receives alarms send by these devices. NMS uses the MIB to identify and manage device objects.
• Agent – process running on the managed device which is responsible for sending alarms to the NMS and processing requests received from NMS.
• Managed device – a networking device on which the Agent process is running.

Some time ago I wrote about Huawei Network Simulation Platform eNSP. I have been testing it since it was launched. It is still being developed and new VRP features will be available soon. It looks like it is really useful tool if you want to study Huawei’s datacom technology.

I’ve just found a video guide for eNSP at Huawei’s forum. I hope it will be informative for you.

Anyway, a background music of this guide will have a calming influence on you 🙂

schedule reboot { at time | delay interval }

When can you use this command?

You can always use it 🙂

Seriously telling, you can use it in cases, when there is probability that your work and a new configuration can cause a device to be unavailable. Sometimes it is necessary to change a configuration of a device, which is not accessible by console, but only by remote connection. Specially if you are changing IP addresses or doing some experiments with access methods of the device. Even if you tested everything in your lab and you are sure that everything will go smoothly, it is better to remember about this function. People make mistakes. After you configured schedule reboot function, you are sure that all your mistakes can be repair by reboot of the device, with the restriction that the new configuration is not saved. Of course I am talking about some small or less important devices. For more important or crucial devices it is recommended to use console connection (console server).

Remember to turn this function off when you are sure that everything works properly!

Routing protocols are used to discover routes to a destination. Only one routing protocol at one time determines the optimal route to a destination.

What happens if we have different routes to the same destination learnt by different routing protocols?

When multiple routing information sources coexist on the same router, the router with the highest preference is selected as the optimal route.

Below you can find the default route preferences by each routing protocol (the smaller the value, the higher the preference is):

Of course you can change these default values manually.

But what happens if different routing protocols are configured with the same preference?

Huawei, to meet your expectations, recently announced the launch of an enterprise network simulation platform eNSP for ICT practitioners. This information you can find at official Huawei website.

To be honest, I have not tested it yet. If I find time I will do it this week. I have already installed this simulator on my notebook and it looks promising. We can build a network based on AR1200 routers and enterprise switches.

The only think you have to do is to register at Huawei website, download and install the simulator.

I forgot to mention that this simulator is completely for free.

To make it easy for you, below you can find a direct link to the Huawei eNSP:

eNSP

Please feedback your comments if you test it. I would like to know your opinion.

Enjoy!