What is Cisco Packet tracer?The Cisco Packet Tracer is a powerful network simulation tool for training in Cisco certifications. It gives us a good view of the interfaces of each router and network device, with many options, and we can use unlimited devices in the network just like with physical machines. We can create multiple networks in a single project for spe
There are a lot of users using Cisco routers, global debugging of Cisco routers here today I would like to introduce you, I hope to be useful to you.
The boundaries of global and interface commands are obvious when conducting Cisco router configuration. In this case, we use the global to identify the commands that cannot be used for interface debugging or for sp
Cisco router knowledge has become more and more widely used in modern enterprises. Next we will briefly learn about the secure router configuration solution.
Knowledge of nine Cisco routers required by network engineers
1. Are the routing protocols supported by Cisco routers compatible with those of other manufacturers?
In addition to IGRP and VPN, one of the
Cisco PIX 515E is an enhanced version of the widely used Cisco PIX 515 Platform, which provides industry-leading state firewalls and IP Security (IPSEC) virtual private network services. Cisco PIX 515E is designed for small and medium business and enterprise remote offices with stronger processing power and integrated, hardware-based IPSec acceleration.
The
Any new services provided by XB company are striving to meet four standards. First, services must be complete and scalable and flexible; In addition, services must be easily managed so that the XB network can provide the best service to its customers and ensure the reliability of the services. After comparing the firewall products of another vendor, the XB network chose Cisco's Cisco ios® Firewall product and Cisc
Follow the performance competitions of several Cisco smart switches. Many companies now have their own switches to learn about the performance of Cisco smart switches and provide objective references for your selection, select a Cisco smart switch that suits your company.
Cisco is the only company in the enterprise, se
CISCO has become a leader in the switch industry, so I have studied the comprehensive performance of CISCO switch 2950. I would like to share it with you here, hoping it will be useful to you. Fixed installation of wire speed fast Ethernet desktop CISCO switch 2950, can provide excellent performance and functionality for LAN. These independent, 10/100 adaptive
The experiences of successful users are undoubtedly very important to us, because they not only know the road to success, but also know the road to failure, these experiences are of great reference value to latecomers. Friends who have already passed ccna are very willing to share their experiences with you.
Some netizens collected some experiences and sorted them out, hoping they could help those who are preparing for the ccna exam.
Winner 1:
It is not difficult to test questions. It is mainly
The IP phone number is a star product in Cisco Unified Communications. Everyone knows that, as an IP-based voice mode, it is very cost-effective. Naturally, this market is also very optimistic. Now let's take a look at Cisco's Unified Communication telephone and communication devices.
Cisco Unified Communication telephone and communication equipment
SIP provides a standard-based method for connecting compat
At present, Cisco routers have a very high market demand. Here we mainly introduce the use of OSPF to solve the defects of the RIP route information protocol, including the OSPF Authentication Method. OSPF is also an open version of The Link Status Protocol.
In practice, OSPF is often used in some large and hybrid networks. In the previous article, I talked about the defects of the RIP Protocol. The reason why network experts develop the OSPF protocol
I would like to introduce how to obtain the IP traffic of a Cisco router. Many people may not know how to retrieve the IP address of a Cisco router. It does not matter. After reading this article, you will certainly have a lot of GAINS, I hope this article will teach you more things. A router is a bridge of a computer network and a core device connecting to an IP network. It can not only connect to differen
A Cisco router is a commonly used routing product in large and medium-sized networks. As a core router, It is the soul of the entire network. If the Administrator is improperly set, the security deployment may be taken over by attackers if it is not in place. In that case, all the networks under it will fall, and the extent of its harm is self-evident.
1. One Security Test
(1) take over the Cisco Router
I r
1. CISCO starts the product is the router;2. RSP starts with the CISCO7500 series of engines;3. VIP start-up products are the Cisco 7500 series of multi-functional interface processor modules;4. The products that start with PA are modules of the Cisco 7500/7200 Series products;5. The NPE starts with the CISCO7200 series engine;6. NM starts with the
Users using Cisco routing, many of them do not pay much attention to doing Cisco router configuration work, in fact this is a very important part, especially for our network security. There are several ways to do Cisco router configuration. The configuration can be done by the TFTP server over the network, through the menu interface provided at startup, and by th
Through introduction to Cisco's Unified Communication System, I believe everyone has a certain understanding of the services it contains. Now, to address these solutions and the unique needs of enterprises, let's talk about Cisco's Unified Communication solution. With these targeted solutions, readers can better understand the role of Unified Communication.
Mobile Solutions
Cisco provides multiple Unified Communication Solutions for mobile employees w
Cisco routers use many methods in configuration. Using SSH instead of Telnet cisco makes it easier for us to understand the configuration of cisco routers and other knowledge points.
Replacing Telnet with cisco router configuration using SSH The Telnet protocol is a member of the TCP/IP protocol family and is the stand
interface IP address from the host. If you are usingWindows 95 or Windows NT, click Start>run to start the Telnet session. For exampleIf the internal interface IP address is 192.168.1.1, enter the following command. Telnet 192.168.1.1
Step 2
The PIX firewall prompts you to enter a password:PIX passwd:Enter Cisco, and then press ENTER. You are logged on to the PIX firewall.The default password is Ci
This article describes how to make the right choice for a CISCO router. Here I will share some of my experiences in choosing a Cisco router. It may be helpful to everyone.
When deploying a LAN, A vro is one of the essential devices. Cisco is the leader in the field of routers and other network equipment. He is also a brand that many network administrators must co
When routers and switches work normally, you do not need to worry too much about wiring issues. However, when the network encounters problems or changes, wiring knowledge may be of great help to you. In this article, we will introduce you to some basic wiring knowledge, and describe the details of the Cisco console dedicated network cable.
The network cable belongs to the first layer of the Network: physical layer. Only the correct network cable can e
Visio OS opera linux ieCisco Systems IOS is vulnerable to a denial-of-service attack using ICMPRedirect messages.When flooded with ICMP redirect messages, the IOS uses up all its memoryTo store the new host routes. The device is then unable to performOperations that need additional memory such as processing ing routing updatesAnd accepting inbound telnet (1) connections.DETAILSKnown vulnerable combinations:* Cisco 1005 with IOS 11.0 (18)*
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