isp failover cisco router

Router Access ADSL configuration detailed 1, Cisco router connection to the ADSL modem configuration: Note: The case for Beijing Telecom ADSL PPPoE access, need to use a common ADSL modem and a Cisco 2500 router (dual Ethernet port), IOS 12.2 (T), Be able to realize LAN sha

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

Some Suggestions on preventing distributed denial of service (DDoS) attacks on Cisco Routers 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

Cisco routers play a very important role in the routing industry, and there are also a lot of user groups. It is very important to understand some Cisco router security configurations. Currently, most enterprises and departments connect to the Internet. Generally, a router is connected to an

Cisco router ip nat command ip natip nat inside destination ip nat inside source list ip nat inside source static ip nat outside source list ip nat outside source static ip nat pool ip nat translation ip nat Syntax: ip nat {inside | outside} no ip nat {inside | outside} this command is used to set the Intranet and Internet interfaces for applying NAT. Use the no option to stop the interface from applying NA

debugging.Router (config) # enable secret xxxxxxxRouter (config) # line vty 0 4Router (config-line) # password xxxxxxRouter (config-line) # exitRouter (config) # hostname huadongHuadong (config )# 3) configure the Ethernet interface of the router and test the connectivity with the local computer. Note: before configuring a Cisco router, connect the cable to the

Recently, a friend asked me how to configure static NAT for a Cisco router to allow Internet users to access the Intranet Web and email servers through a Cisco router. Obviously, this function requires NAT between the public IP address and the Intranet IP address. The following are the specific implementation methods.

Analysis of Cisco Broadband Access configuration method China Telecom's bandwidth is 2 M and the assigned fixed IP Address: 202.249.11.101 subnet mask: 255.255.255.255.248 Gateway: 202.249.11.20Planned LAN address range: 192.168.0.2-192.168.0.254 subnet mask: 255.255.255.248 Gateway: 192.168.0.1The vro provides a 1721 M Adaptive port for Cisco 10/100. Next, we need to configure a 1ENET expansion card with

. RPF reverse transmission path forwarding) is an input function activated on a network interface or sub-interface to process packets received by the router. It is very important to enable the CEF function on the vro, because RPF must rely on CEF. Unicast RPF is included in Cisco IOS 12.0 and later versions that support CEF, but does not support Cisco IOS 11.2 or

The VPN configuration of the Cisco router is not important for network security, but also makes the user more convenient during use. In this experiment, we use the Cisco 2600 router and the Cisco router VPN configuration to implem

Cisco once again launched a new generation of router products and also applied new technologies. So I studied how Cisco developed the new VQE technology to solve the problem of IPTV Video Delivery. Here I will share it with you, I hope it will be useful to you. Cisco has announced the release of the VisualQualityExperi

Configure the PPPoE configuration for connecting a CISCO router to an ADSLmodem through the PPPoE configuration: hostnamebjsite! Ipsubnet-zeronoipdomain-lookup! Vpdnenablenovpdnlogging! Vpdn-group1request-dialinprotocolpppoe! Interfaceethernet00ipaddh Configure PPPoE for connecting a CISCO router to an ADSL modem using

This article uses VPN technology to achieve interconnection between two parts of the network, simulate ISP, close to practicality, the article mainly shows us the specific operation steps, mainly the input of basic commands. In this experiment, we use the Cisco 2600 router and VPN technology to achieve the network interconnection between one branch and two parts.

Router Password recovery:Preparation: A PC is connected to a router with a console line How it works: Fix the Register value if the forgotten password is locked outside the routerThe default register value is 0x2102 (off), and to restore the password you need to turn this value on to tell the router to ignore the contents of the NVRAM. The value for opening the c