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ObjectiveLearning Network knowledge of the students have heard or used the network device Simulator, network equipment simulator known to have Huawei's ENSP, Third HCl and Cisco PACKET TRACER, Cisco's simulator with a simple operation interface, Easy to install and use and a variety of easy to work can win a lot of network engineers and students praise. Because I am short-sighted, I will be the most basic level of operation, the shortcomings are also

Cisco CCNA Chapter 7 answers for the third semester, Cisco ccna for the third semester 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.

Cisco CCNA Chapter 6 answers for the third semester, Cisco ccna for the third semester 1. 2. 3. 4. During the implementation of inter-VLAN routing, what are the important considerations when configuring the sub-interface of the router? The physical interface must have an IP address. The sub-int

, adding switches and end devices1, double-click switch into switch command line (CLI) mode, switch configuration mode by command2 in most cases for security reasons, you need to configure the switch privileged mode passwordValidation test3 Configuring the telnet login switchTo achieve remote login, first need to configure the login user and device management addressVerify the configuration by matching the IP address of the PC with the switch management address into the same network segment and

Technical standards for VLANs IEEE 802.1Q was formally promulgated by IEEE Commissioners in June 1999, and the earliest Vlna technology was proposed by Cisco (Cisco) companies in 1996. With the development of the past few years, VLAN technology has been widely used in large and small enterprise networks, becoming the most popular Ethernet LAN technology at present. This article is going to introduce one of

Tags: size src zone sha port text topology Cisc-oTwo networks in different regions if you want to communicate, you need to configure routing on the router to implement the packets across the networkRouters can connect to multiple networks, but the router itself does not know about other networks, and we need to manually configure static routes to let routers know about other network information or to configure dynamic routing to let routers learn about other networks themselves.This learning con

Tags: color-o switch test one-arm routing access via interface implementation representationTo achieve inter-VLAN communication, in addition to configuring the SVI interface on the switch, you can also implement VLAN data forwarding by configuring sub-interfaces under the physical interface of the router.Configuration ideas:1 The access switch configures the corresponding VLAN and sets the access PC port to access mode2 Setting the physical interface of the router to which the switch is connecte

Nat[network address translation] In the absence of IP address in the case of a great use, it can not be normal Sisu network of the intranet address into a legitimate external network address on the public network to send and receive data. At the same time address translation function can also be very good to hide and protect the host network.Nat has static NAT (internal address and external address one-to-one) and dynamic NAT (internal address pool and external address Pool A-do)This time we'll

Network address port Conversion NAPT is a very familiar way of transformation. NAPT is commonly used in access devices, which can hide small and medium-sized networks behind a legitimate IP address.Unlike dynamic address NAT, NAPT maps An internal connection to a separate IP address in the external network, adding a TCP port number selected by the NAT device to the address.This time, let's get to know napt.Configuration ideas1 Configure the router's interface IP address, note the network segment

RIP protocols can be configured in a more convenient way, but the limitations of RIP itself indicate that it is not suitable for medium to large networks. In contrast, OSPF is more complex to configure than RIP, but its functionality and performance are better than RIP.Configuration ideas1 Configure the physical interface address of the router Xia Lian switch and the physical interface address of the router to the other router and open the port2 Configure the address of the switch Xia Lian PC an

Through the previous experiment we learned that by configuring VLANs, the terminals under different VLANs could not communicate with each other, but if you wanted to communicate between different VLANs, you would need to configure inter-VLAN routingLayer three switches have the capability of the network layer and can be forwarded via the routing functionNetwork environment1 set the IP address and gateway of the terminal (192.168.1.1 and 192.168.2.1, respectively).2 VLAN is configured under Layer

Cisco 2015 campus recruitment test interview summary, Cisco 2015 I registered for the Cisco-EDS job in soy sauce. I wrote a test on October (Saturday), with the following points: c/C ++, Python, Alogrithm OS, Database, Java, and Network. The test time is 70 minutes, 2 or 4 of them are limited or selected based on different positions. The answer to the question i

How does a cisco switch find a loop? How to solve Loop Problems, cisco How does a cisco switch find a loop? Loop Problem Solution How can we intuitively and quickly determine whether a loop exists on a cisco switch? And quickly locate the switch loop? Is this a problem? Currently, there is no best way to view the loop.

Previous page Everyone talked about Cisco Basic Operation command switch, while dragon boat holiday, the Cisco simple switch configuration, and hope you share "Happy Dragon Boat Festival"! Ok, configure the switch, first, you must enter the global configuration mode switch, successfully connect the switch and landing successfully into privileged mode1. Enter the global configuration mode:Switch#configure te

Tags: HSRP working principle STP effect ACL access control List loop storm Cisco private protocolDay 031. What is HSRP? How does it work?HSRP: Hot Standby Routing protocolHSRP is a Cisco private protocol that ensures that user communication can be quickly and transparently restored when a network edge device or access link fails.This provides redundant rows for the IP network. By using the same virtual IP a

This article describes how to configure the IOS Firewall on a Cisco router. What should we pay attention to when configuring the firewall? The following article provides detailed answers. Pre-configuration on R1, R2, and R3 R1 (config) # int e0/0R1 (config-if) # ip add 172.16.1.1 255.255.255.0R1 (config-if) # no shR1 (config) # ip route 0.0.0.0 0.0.0.0 172.16.1.2 configure Static RoutingR1 (config) # ^ ZR2 (config) # int e0/0R2 (config-if) # ip ad

, 6800IA is restarting, patiently wait, and then observe.Router#show FexFex Fex Fex FexNumber Description State Model Serial---------------------------------------------------------------------------101 6800ia-48-01 Online c6800ia-48td foc2016s1ndAfter a wait, when you find that the status is online, that the 6800IA is connected to normal, you can configure it!We can see if the interface of IA is added by the show Run command.Router#show Run........................ Also omit the N-line configura

that the admin domain is able to overwrite all branch switches. The Cisco switch is capable of supporting any media as a trunk, and it can use its own ISL tags for relaying. ISL (Inter-Switch link) is a protocol between switches, between switches and routers, and between switches and servers to transfer multiple VLAN information and VLAN data streams, configured with ISL encapsulation via ports directly connected to the switch, The VLAN allocation a

(global configuration mode)S1 (config) #interface vlan 1 --Enter VLAN 1 PortS1 (config-if) #ip address 192.168.1.1 255.255.255.0 --Configure the vlan1 with an IP address so PC1 and S1 can ping interoperabilityS1 (config-if) #no shutdown --activating VLAN 1 PortS1 (config-if) #end --Return to privileged modes1#copy running-config startup-config --Save configuration (from memory RAM to hard disk NVRAM)s1#show running-config --View switch configuration4. Go to PC1 host command line interface(1) F

protocol between as is called the External Gateway Protocol External Gateway Protocol (also called Inter-Domain routing protocol): there are two types of inter-domain routing protocols: externalGateway Protocol (EGP) and Border Gateway Protocol (BGP)2) Dynamic routing according to the algorithm can be divided into: Distance vector routing protocol, link state routing protocolDistance Vector Routing protocol: Select Route RIP,IGRP based on the number of routes that are routed from the source net