cisco routers for dummies

To address the shortage of IP addresses and achieve higher network security, IPV6 has been launched for some time. In addition to some special industries, IPV6 applications in Lan are not widely used. Recently, I have deployed an IPV6 network for a local company. Next I will reproduce this process in the cisco simulator, hoping to help you. I. Basic description 1. Network Topology Implement communication between IPV6 hosts in two CIDR blocks. The

/ Wkiom1b1r3pjwlkgaahat2i3k5g149.jpg "alt=" Wkiom1b1r3pjwlkgaahat2i3k5g149.jpg "/>650) this.width=650; "style=" Float:none; "title=" 2.JPG "src=" http://s4.51cto.com/wyfs02/M02/7E/04/ Wkiol1b1sa-d4kzzaaiicny5y3c290.jpg "alt=" Wkiol1b1sa-d4kzzaaiicny5y3c290.jpg "/>There is no route to the 10.0.0.0 segment from the router yong1 and Yong2 's routing table. Then let's 10.0.0.2 send the packet and try it out.650) this.width=650; "style=" Float:none; "title=" 1ping10. JPG "src=" http://s4.51cto.com/wy

Routers play an important role in computer networks and serve as a bridge between computer networks. It not only connects to different networks, but also selects data transmission paths and blocks illegal access. Router configuration is not very easy for beginners. We will introduce general configurations and simple debugging of routers for your reference When configuring

port is 22. By using SSH, all transmitted data can be encrypted, which is not possible in the "man-in-the-middle" attack mode above, and can also prevent DNS and IP spoofing. In addition, it also has an additional advantage that the transmitted data is compressed, so it can speed up transmission. 3. SSH deployment Based on the above tests and SSH security features, it is necessary to use SSH instead of Telnet for security management of Cisco

Cisco plays a very important role in vro enterprises. It is very important to know some knowledge about common configuration commands of Cisco vrouters. So I studied how to use common configuration commands for Cisco routers. I would like to share them with you here for your reference. Access-enable allows the router t

CISCO PT Simulation Experiment (15) loopback Telnet configuration for routersExperimental Purpose :Mastering the features and functions of router loopback interfaceMaster the configuration of the Loopback interface to achieve Telnet login to the routerMastering the basic configuration of RIP dynamic Routing and default routingExperimental Background : as the network environment of the company is becoming more and more complex, as a network administrat

This document lists frequently-used configuration commands for Cisco routers in alphabetical order. Access-enable allows the router to create a temporary Access list entry in the dynamic Access listAccess-group: Apply the Access control list (ACL) to the interface.Access-list defines a standard IP ACLAccess-template manually replaces the temporary Access list entry on the connected vroAppn sends commands to

of the exec.py machine will be configured to 1.1.1.8/10 the problem is, if I buy 10 boxes, how do I tell which box the data I send will arrive? At this time, think of the CDP, the box first put its own information, including the identification serial number, including the MAC address group broadcast, and then similar to the Winbox program to receive multicast messages, users follow this type of information to configure the specific box!This completes the automatic configuration of all: 0. Conne

Cisco routers support centralized AAA (authentication/authorization/accounting) functions, but a Cisco ACS (Access Control Server) needs to be deployed. If the number of network devices is small, you can use the local authentication and authorization functions of the Cisco router for authentication and authorization, a

configuration file Switch # copy FLASH: config. Text system: Running-config 8) change the password and save it. Configuration Management IP Layer-3 devices can directly configure and manage IP addresses on interfacesL2 devices can only be configured with IP addresses in VLANs SW1 (config) # int VLAN 1SW1 (config-If) # IP AddressIP netmaskSW1 (config-If) # No Shutdown Confi

Cisco 2811 Routers Detailed configurationRouter>enableRouter#configure TerminalRouter (config) #hostname cisco2811//define router name2811 (config) #enable password 124563831//Set Login password2811 (config) #line vty 0 42811 (config-line) #password 124563831//Set Telnet password2811 (Config-line) #login2811 (Config-line) #exit2811 (config) #interface fastethernet 0/0//Set Intranet interface2811 (config-if)

setting the routing entry on the YONG3 on the 192.168.1.0 network segment, ping192.168.2.2 on the Yong1 to ping theYong3 (config) #ip Route 192.168.1.0 255.255.255.0 s/0/3/0Yong3 (config) #endYong3#sh IP routeGateway of last resort are not setS 192.168.1.0/24 is directly connected, Serial 0/3/0it has an administrative distance value of 0C 192.168.23.0/24 is directly connected, Serial 0/3/0Yong3#ping 192.168.1.1Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 192.168.1.1,timeout

1. Start the OSPF protocol To start the OSPF routing protocol on a CISCO router, two steps are generally required:1) Start the OSPF protocol process:Router (config) # router ospf 2) define the network of the vro:Router (config-router) # network The OSPF protocol is started through the Router ospf command. The OSPF protocol Process id is only a value related to the current vro and has no relationship with other vrouters in the network. A vro can run a

With the rapid development of the IT industry, Cisco routers are widely used in all walks of life. This article will start with the basic configuration and briefly introduce the configuration method of Cisco routers. 　　 1. Configure the Ethernet port # conf t 　　 Configure the router from the terminal (

changed the password of the Cisoc router and encrypted it, it can be sniffed. (Figure 1) 2. SSH Security SSH is called Secure Shell in English, and its default connection port is 22. By using SSH, all transmitted data can be encrypted, which is not possible in the "man-in-the-middle" attack mode above, and can also prevent DNS and IP spoofing. In addition, it also has an additional advantage that the transmitted data is compressed, so it can speed up transmission. 3. SSH deployment Based on th

Summary of typical configurations of Cisco routers (1) Use the ip verfy unicast reverse-path network interface command www.2cto.com to check each router packet. In the CEF (Cisco ExpressForwarding) Table of the router, the router discards the packet if it does not have a route from the source IP address of the packet. For example, if the router receives a packet

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

command after the prompt:===================================================================ROMMON 1 >ip_address = Router IP addressROMMON 2 >ip_subnet_mask = Router Subnet maskROMMON 3 >defaut_gateway = Default gateway addressROMMON 4 >tftp_server = TFTP server IP addressROMMON 5 >tftp_file = iOS file nameROMMON 6 >tftpdnld===================================================================Rommon 1 >ip_address=192.168.0.1 (is the IP address of the router)Rommon 2 >ip_subnet_mask=255.255.255.0Ro

dedicated for network management or an application that executes management functions on a network device. Currently, many software and hardware vendors provide network management systems that support SNMP protocols, such as Cisco's CiscoWorks network management software products. The SNMP agent is a software module in the managed device. It is used to maintain the management information data of the managed device and reports the management data to an SNMP Management System as needed. The SNMP

Two-line access technology for Cisco Routers In some cases, we need to implement dual-line access to ensure stable operation of the network and ensure reliable service quality. The following steps can be taken: 1. Configure the IP address of the Internet access interface, which is generally from China Telecom or China Netcom. 2. Configure the access control list 3. Configure the NAT address pool 4. Configur