From the time I started working, I often heard the word CCIE. Every times, someone around you talks about it, he always has respect for it. This also makes CCIE feel that CCIE is a very difficult exam in my mind. Every time I hear people around me pass CC

Cisco's firewall mainly refers to the firewall after 5512. The previous 5510 series basically do not explain because the production is discontinued. Let's talk about the configuration is not meaningful. There mainly refers to the 5500X series firewall. He

When doing a project, I often encounter such a small project. That is the customer only buys a Cisco router and a core switch. Now you need to configure the router and switch for the client to access the Internet. In fact, this small project looks very si

A small way to open CASE: 1、Telephone method: Go to Cisco website to view contact information Password: (agent password) CO : (Applicant's CCO account) The operator will ask for the serial number of the equipment, service contract number, fault informa

The following is a demonstration of the license upgrade method for ISRG2 devices. Since the X switch is the same as the ISRG2 router upgrade method, here is just an introduction to the ISRG2 router method. 1921#dir Directory of usbflash0:/

Speaking of it that I configured an afternoon to configure the activation of this license on yesterday afternoon starting from 1 pm until the last few minutes at 5 pm. I thought it would be too simple to apply for a license on the CISCO website. I believe

The initial version of RTU release (Existing RTU) contains built-in evaluation licenses valid for 12 years and Lifetime RTU licenses that are similar to permanent licenses, in that they are built into the IOS image and avoid the overhead of license instal

The design of the network architecture is very complex and is the best place to reflect the technical level of a network engineer. The following architecture is a traditional architecture recommended by Cisco. Of course, Cisco's latest architecture is not

If you can’t explain it simply, you don' t understand it well enough-Albert Einstein In fact, I personally feel that no matter how profound theories and techniques can be explained by way of example and example in life. Any complex protocol is designed b