cisco routers for dummies

Basic configurations of Cisco Routers En -- enter the privileged mode config t -- enter the global configuration mode wr (OR) -- save the configuration (otherwise, the configuration fails before the power-off) 1. Set the password for entering the vro Console In global configuration mode, enter line console 0 --- enter the '0' Interface password 123 -- set the password to 123login -- set the console inter

Cisco800Series routers Cisco 800Series routers are customized for small offices and remote workers.Cisco IOSSoftware to provide enhanced network security and reliability. It is suitable20Small Offices of usersISDN,IDSLOr serial connection up512 Kbps) Connect each userInternetOr enterprise LAN. BenefitsCisco 800Customers of series

Summary of typical configurations of Cisco routers (2) how to use the Control Access Rate of a Cisco router to limit the traffic Rate of ICMP packets: www.2cto.com interface xy rate-limit output access-group 2020 3000000 512000 786000 conform-action transmit exceed-action drop access-list 2020 permit icmp any echo-reply refer to IOS Essential Features for more in

Some Suggestions on preventing distributed denial of service (DDoS) attacks on Cisco Routers 1. Use the ip verfy unicast reverse-path network interface commandThis 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

(config ) #router NBSP;RIPNBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBsp;//Entering routing configuration mode - Enable RIP protocol router (config-router) #version 2 //using version 2, RIPV2 protocol router (config-router) #network 192.168.1.0 NBSP;//Specifies the network that needs to be advertised (located in the routing interface) Router (config-router) #network 222.200.105.0router (config-router) #exit/*=part3 static NAT configuration */router (config) #inter f0/0router (config-if) #ip natinsideroute

This article describes in detail how to configure Cisco routers in terms of global debugging, interface debugging, and Protocol debugging. I believe this article will help you. Global debugging When configuring a Cisco router, the boundaries between global and interface commands are obvious. In this case, we use "Global" to identify commands that cannot be used f

The steps below describe how to recover a password on the Cisco 600 series of routers. Step 1: Enter RMON mode. To do this, follow the steps below: Connect your PC to the console port of the router.Set your Terminal Access Program (such as HyperTerminal in Windows) to the following settings:Baud rate: 38400 bps recommended (standard 9600 bps possible)Data bits: 8Parity: NoneStop bits: 1Flow control: NonePow

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10 permit any! The router is prohibited from receiving and updating the route information of the 192.168.1.0 network.Router (Config) # router ospf 100Router (Config-router) # distribute-list 10 in! Disable router forwarding to spread route information of 192.168.1.0 NetworkRouter (Config) # router ospf 100Router (Config-router) # distribute-list 10 out6. We recommend that you enable the IP Unicast Reverse-Path Verification. It can check the accuracy of the source IP address and prevent certain

SYSTEM image according to the boot system command settings in the startup configuration, if this command is not set, the operating system image is loaded from the system image on a default network server. When the 6th-bit value is 1, the configurations in NVRAM are ignored when the vro starts. For example: 0x0: the operating system image is not automatically loaded, but enters the ROM monitor mode and waits for the user to enter the command (for example, if the command fails in the pre

This article describes in detail how to classify Cisco routers. What are the features of each Cisco Storage? I believe this article is helpful to you. Memory category: 1: RAM: Random Access to memory, equivalent to computer memory 2: ROM: read-only memory. Some microcodes used to start and maintain the router are resident in the ROM. 3: FLASH Memory, equivale

Router (config) # interface f0/0Router (config-if) # IP address 192.168.1.1 255.255.255.0Router (config-if) # no shutdownRouter (config-if) # exitRouter (config) #Router (config) #exitRouter #Router # Configure Terminal! Go to Global modeEnter configuration commands, one per line. End with cntl/z.Router (config) # enable password Cisco! Set Privileged PasswordsRouter # Write Memory! Save current configuration file to NvramRouter # Reload! Rebooting th

First look at the requirements: (to make the following effect)Take a look at the overall topology diagram:put a Laptop : L0DHCP automatically get IPput a server-pt : DHCP ServerSet IPSet Config inside the DHCPGateway (first routed address IP )Dns Serverput a switch: sw0(No configuration required, just a function of the expansion port)Place several routers: R0 , R1 , R2,dte , DCEconfigure each port's IP Address requirements:The connection is ensured by

then restartRommom>confreg 0x2142 Modifying the value of a register rommon>reset restarting the routerStep three, after restarting the router will not be able to load the configuration file because it modifies the value of the configuration register, so the password does not appear.After entering configuration mode, manually load the configuration file inrouter>en en entering privileged mode router#copy startup-config running-config before loading the configuration file Step four, after loadi

This article mainly introduces how to upgrade two PCs to a Cisco router IOS. How can we do this? The following article will give you a detailed introduction. I have a 2501 router whose IOS is a bad cisocB), another 2501 router whose IOS is a good (ciscoA), and a good IOS is no longer available on my PC, however, it is a waste of time to create a TFTP file on the PC and upload the file to the PC ,. Then I thought of a way to directly configure the vro

This article mainly introduces the Storage Classification of Cisco routers, as well as four execution modes and password settings for different access methods. I hope this article will help you. Memory category: 1: RAM: Random Access to memory, equivalent to computer memory 2: ROM: read-only memory. Some microcodes used to start and maintain the router are resident in the ROM. 3: FLASH Memory, equivalen

Tags: Io on log line as C class IP word En -- enter the privileged mode config t -- enter the global configuration mode WR (OR) -- save the configuration (otherwise, the configuration fails before the power-off) 1. Set the password for entering the vro Console In global configuration mode, enter line console 0 --- enter the '0' Interface Password 123 -- set the password to 123login -- set the console interface to Allow Logon2. Set the password for entering the privileged mode and the encrypte

configurationRouter>enableRouter#configure TerminalRouter (config) #interfiguer f0/0Router (config-if) #ip address 192.168.1.2 255.255.255.0Router (config-if) #no shutdownThen back into privileged modeRouter#write Memory for storageThen test if you can ping the IP of the serverRouter#ping 192.168.1.1Then make a copy.Router#copy Running-config TFTPAddress or name of the remote host[]?192.168.1.1 enter the IP of the server after the question markThen leave the default hit enter to finish.4. Route

packet, and the number of tokens in TB2 is the size of the previous token minus the packet;When the packet is to be forwarded out, if you can get enough tokens from the token bucket TB1, but cannot get enough tokens from the token bucket TB2, it becomes exceed, at this time the number of tokens in TB1 is the number of tokens before the size of the packet minus the packets, TB2 the number of tokens unchanged;When the packet is to be forwarded out, if it cannot get enough tokens from the token bu

I believe you should all know that the different speed limits of the router are not the same, I will mainly for Cisco router settings, the details of Cisco router speed limit and its methods. Nvar speed limit of Cisco router BT software now blocked will automatically change the port, some software or use 8000, 8080, 2070 and other ports, restricting these po