cisco router troubleshooting commands

Tags: requires domain lock login do not need to enter the password secret process network failure PACExperimental 1:cisco Router base configuration1. Operating mode of the router:Router> user mode, typically used to view statistics, but cannot modify the router's settings.router# Concession mode, you can view and modify the configuration of the router, typically

Introduction to CISCO router AAA and related routing configuration cisco aaa www.2cto.com 3A concept: authentication authorization Accounting accountingcisco provides a variety of 3A services for routers and switches: 1. Self-contained AAA router/NAS self-contained AAA service NAS (Network Access Server) 2. Contact the

network will be fatal. Therefore, to improve security, the Cisco router sets password management for the Auxiliary port. Therefore, it is recommended that the network administrator do not use the same password as other passwords in password settings. Otherwise, the security of the router is reduced. In short, the Auxiliary port plays an important role in vro man

Router (config) # exit Router # wr (save to startup configuration) Name of configuration file [router-config]? 2511 (configuration file name) Configure using 2511 from 145.1.1.1? [Confirm] Display: Loading 2511 from 145.1.1.1 (via Ethernet0) [OK-1553/32723 bytes] Copy the running configuration to the startup configuration file NVRAM:

same password as other passwords in password settings. Otherwise, the security of the router is reduced. In short, the Auxiliary port plays an important role in vro management. Generally, the Console port is used only when the vro is configured. In the process of subsequent network maintenance and router troubleshooting, secondary ports are often used. Therefore

0 123 interface seri_3/0ip address 192.168.1.2 255.255.255.0encapsulation pppppp authentication chap3.3.2, CHAP two-way authentication 1. Configure R_A on the R_A router as follows: R_A # conf tEnter configuration commands, one per line. end with CNTL/Z. R _ A (config) # inter s2/0R_A (config-if) # ppp authentication chap % LINEPROTO-5-UPDOWN: Line protocol on Interface serial/0, changed state to down % LI

With the development of China's routing industry, its market demand is also increasing. As a leader in the routing industry, Cisco routers have a very high market share. Telnet to the Cisco router for remote management is the choice of many network management, but the data transmitted through Telnet is in plain text, so this login method has a great security risk

the OSI Layer 7 model. First, check the physical layer, then the data link layer, and so on, and try to identify the failure point of the communication until the system communication is normal.You can use a variety of tools for Network diagnosis: Router diagnostic commands, network management tools, and other fault diagnostic tools including LAN or WAN analyzers. Viewing the route table is a good way to st

password on the Console port of the vro, because this prevents others from connecting to the vro and accessing the user mode. Because each vro has only one console port, you can use the line console 0 command in global configuration, and then use the login and password commands to complete the settings. Here, the password command is used to set an appropriate password, as shown below: Enable password-Enable password The enable password command Preve

This article is intended for CISCO router users. It mainly introduces technical issues related to basic network equipment, regular system upgrades, and use of CISCO routers. I hope this article will help you. These two tools enable communication between devices connected to the network and other networks. Although vrouters and vswitches look very similar, they ha

This is a professional article about Cisco routers. Students who want to learn this knowledge can get some reference in writing this paper. This article mainly describes the technical application of the Cisco router level-1 switch. The Network works on two devices. The vswitch and vro connect the computer with the peripheral device. These two tools enable communi

that can prevent router overload caused by excessive HTTP requests. The default Response count is 200, but can be modified. This function also applies to third-party filter servers Websense and SmartFilter. How do I configure Cisco IOS URL filtering? To configure Cisco ios url filtering, we need to have a deep understanding of firewall rules and URL filtering pr

number of Logon failures is 0. This information shows your settings, including the default login delay of one second, and other additional information. It also tells you that the current vro is in normal mode, which means that the vro currently allows you to log on. If a Cisco router deems it attacked, it enters quiet mode and begins to reject all login operations. You can also configure an ACL to indicate

This article describes in detail how to understand the technology of Cisco routers in terms of basic network equipment issues, regular system upgrades, and the use of Cisco routers. I believe you will be helpful after reading it. These two tools enable communication between devices connected to the network and other networks. Although vrouters and vswitches look very similar, they have different functions i