ip sla cisco router

It is still difficult for general users to implement effective Cisco router nat configuration. So I have studied the comprehensive knowledge about Cisco router nat configuration and will share it with you here, I hope it will be useful to you. 1. NAT introduction: NATNetwork Address Translation) Network Address Transl

Some time ago, my colleague asked me a question about the DHCP configuration of the Cisco router. At that time, I did not give a positive answer, because this was my first time. In the following days, I have consulted relevant materials and are satisfied with the following answers. Share it with you now! In addition, most people do not know about the computer and do not operate these operations. Therefore,

restrict the ip address range for access to VTY. Because the number of VTYs is limited, when all VTYs are used up, remote network connections cannot be established. This may be exploited to launch Dos attacks ). Here, attackers do not have to log in. They only need to establish a connection and go to the login prompt to consume all VTYs. A good defense method for such attacks is to use the ip access-class

As a port device connecting WAN, vrouters have been widely used. Their main function is to connect multiple independent networks or subnets to achieve optimal routing and datagram transmission between the Internet. This article takes the Cisco 2511 vro as an example to introduce four router configuration methods. 1. Use the Cisco

CISCO PT Simulation Experiment (12) configuration of router static routesExperimental Purpose : Master the configuration method and application of static routeMastering Route descriptions in the routing tableFamiliar with the principle and process of Routing and Packet forwardingExperimental Background :In addition to the headquarters of a company, there is another branch, and there is a separate LAN, in o

OR non-broadcast Multiple Access nbma) and Backup the specified Router Backup Designated Router, BDR) On a Cisco router, HELLO is sent once every 10 seconds by default, and can be changed through ip ospf hello-interval.The router's invalid interval is four times the default

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 routers. Of co

local management interface (LMI) Show Frame-relay Map Displays the current mapping entry and information about the connection Show Frame-relay PVC Displays statistical information about the permanent virtual circuit (PVC) of the Frame Relay interface Show hosts cache list of host names and addresses Show interfaces displays statistics for all interfaces set up on routers and access servers Show interfaces shows the status of all interfaces configured on the

Dynamic and robust routing is extremely important for Internet networks. Therefore, any network engineer who is first involved in this field must not only understand the concept of routing, but also be able to control it in a real environment. However, the products provided by high-end network equipment suppliers such as Cisco in the routing field are all over the world. This means that most people can only learn routes in school or laboratory environ

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