cisco router configuration

1. Use the ip verfy unicast reverse-path network interface command This function checks each packet passing through the router. In the CEF (Cisco Express Forwarding) 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

A Cisco router is a commonly used network device. But what is the storage type of a vro? We will give you a detailed introduction through this article, and hope to have a deeper understanding of Cisco routers after reading this article.Memory category:1: RAM: Random Access to memory, equivalent to computer memory2: ROM: read-only memory. Some microcodes used to s

for Cisco's enterprise-class routers and switch products, regular debugging, familiar with the operation of the product principles and business processes. This will be easy to deal with when you encounter the Internet and data failure. The following small series to you recommend the router debugging simple steps: 1. Use the Cisco router Debug cable to connect th

Assume that two Cisco routers and R1 (server) connect to R2 (client) to form a simple chained lan. DHCP is implemented below. The configuration commands and explanations are as follows: 1. Configure the R1 dhcp Service Dhcp # configure terminal // Enter global Mode Dhcp (config) # service dhcp // Enable the dhcp Function Dhcp (config) # no ip dhcp conflictlogging // Disable dhcp logging Dhcp (config

://s3.51cto.com/wyfs02/M01/5B/98/wKiom1UNHE_jd_NWAAMEKi3zMRY964.jpg "width=" 536 "height=" 351 "alt=" Wkiom1unhe_jd_nwaameki3zmry964.jpg "/>3. Backing up the configuration fileConfiguration command:Router (config-if) #ip address 192.168.1.2 255.255.255.0! Set the interface IP addressRouter#write memory! Save Running-config to Startup-configRouter#copy Running-config TFTP Save addressAddress or name of remote []?192.168.1.1 saved host IPDestination fil

Use the home ADSL line and use the CISCO router to build the PPPoe Server so that the PC can access www.2cto.com R1 (config-if) # do sh runBuilding configuration... Current configuration: 1470 bytes! Version 12.4 service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption! H

Simply record that a Cisco router is simulated as a frame relay switch, and the router must have a serial interface module. Liehuo.net // Enable Frame Relay switching on the vroFRSW (config) # frame-relay switching strong-fire-network // Enter the Interface Configuration ModeFRSW (config) # int serial 0/1 Veryhuo.co

timeout and SSH Authentication-retries to minimum numberEnable only SSH and SCP for access and file transfer to/from the router6. Protect forwarding planeEnables Cisco Express Forwarding (CEF) or distributed CEF on the router, when availableAnti-SpoofingBlocks all IANA reserved IP address blocksBlocks private address blocks if customer desiresInstalla default route to null 0, if a default route is not bein

When I got up this morning to go to the forum, I saw a post. Ask how to solve the following problem? A Cisco three-tier switch divides 3 VLANsVLAN 2:IP 192.168.1.1 255.255.255.0 192.168.1.254 Network SegmentVLAN 3:IP 192.168.2.1 255.255.255.0 192.168.2.254VLAN 4 IP 192.168.3.1 255.255.255.0 192.168.3.254Each VLAN can communicate with each other.Now add 1 Cisco routes to achieve shared Internet accessCisco

The Cisco router NAC solves the problem. The so-called NAC is an architecture that allows multiple hardware and software components to work together to protect the user's network from adverse client attacks. 1. It is not easy to fully implement NAC, because the entire architecture contains too many different components from other vendors. For example, the architecture contains the NAC Policy Manager and mul

The CISCO router performs a bridge on the instance router # sh ru Building configuration... www.2cto.com Current configuration :! Version 12.1 service timestamps debug uptime service timestamps log uptime no service password-encryption! Hostname

First, the experimental topologySecond, the specific configurationRouter (config) #do sh runbuilding configuration ... Current configuration:604 bytes!version 12.4no service Timestamps log datetime MSECNO service timestamps debug datetime MSECNO Service Password-encryption!hostname router!ip dhcp excluded-address 192.168.1.1!IP DHCP Pool ABCNetwork 192.168.1.0 25

Cisco router Tcl script backdoor 2nd tests Author: Vic The security of Cisco routers is certain. Password verification is required for remote login. The Cisco passwords are encrypted in the following ways:1 not encrypted, plaintext display 650) this. width = 650; "border =" 0 "alt =" "src =" http://img1.51cto.com/attac

mpls vpn model consists of three components: CE, PE, and P:CECustomer Edge): It is a user's network Edge device. interfaces are directly connected to service providers, such as routers or switches. CE "perceives" that the VPN does not exist.PEProvider Edge) vro: the operator's Edge router. It is the Edge device of the operator's network and is directly connected to the user's CE. In the MPLS network, all VPN processing occurs on the PE router.PProvid

Cisco router startup process:(1) execute Bootstrap Loader in the ROM, which is similar to the BIOS in the computer and Bootstrap will install IOS into RAM;(2) IOS can be stored in many places (FLASH, TFTP server or ROM). The order in which the router looks for IOS images depends on the startup domain of the configuration