cisco syslog

Users who use Cisco switches have encountered many problems. Here we mainly analyze the failure and solution of Cisco switches triggered by IOS. Summary of the fault recovery solution for Cisco switches triggered by IOS, today's topic on preventing Cisco switch faults is discussed about how to cope with

EtherChannel sum view "Port aggregation/link Bundle #sh int port-channel View" Port aggregation/link Bundle #show spanning-tree view spanning tree status#show access-list View rule status#show History View Historical input commands#show errdisable Recovery see which protections can be automatically recovered after a timeout#showerrdisable Detect ? View err-disabled reason for the state6. Configure the IP of the VLANS (config) #int VLAN 6S (Config-vlan) #no ShuS (Config-vlan) #ip add 10.2.20.1 2

With the development of the international interconnection Network, some enterprises have established their own intranet and connected with the Internet through a dedicated line. In order to ensure the security of intranet, it is necessary to use dedicated firewall computer to prevent illegal intrusion. The router firewall can only be used as a filter and cannot hide the internal network structure from the intruder's eyes. As long as a computer on the external network is allowed to directly acces

One of the biggest challenges ISP faces today is tracking and blocking denial of service (DoSattacks ). there are three steps to deal with DoS attack: intrusion detection, source tracking, and blocking. this command is for source tracking.1. Configuration example:This example describes how to use line cards/port adapters on a router to collect data streams from the host 100.10.0.1 (attacked machine) for each line card or port adapter. Log logs are generated two minutes later. The data packets an

I would like to introduce how to obtain the IP traffic of a Cisco router. Many people may not know how to retrieve the IP address of a Cisco router. It does not matter. After reading this article, you will certainly have a lot of GAINS, I hope this article will teach you more things. A router is a bridge of a computer network and a core device connecting to an IP network. It can not only connect to differen

A Cisco router is a commonly used routing product in large and medium-sized networks. As a core router, It is the soul of the entire network. If the Administrator is improperly set, the security deployment may be taken over by attackers if it is not in place. In that case, all the networks under it will fall, and the extent of its harm is self-evident. 1. One Security Test (1) take over the Cisco Router I r

1. CISCO starts the product is the router;2. RSP starts with the CISCO7500 series of engines;3. VIP start-up products are the Cisco 7500 series of multi-functional interface processor modules;4. The products that start with PA are modules of the Cisco 7500/7200 Series products;5. The NPE starts with the CISCO7200 series engine;6. NM starts with the

Users using Cisco routing, many of them do not pay much attention to doing Cisco router configuration work, in fact this is a very important part, especially for our network security. There are several ways to do Cisco router configuration. The configuration can be done by the TFTP server over the network, through the menu interface provided at startup, and by th

Cisco Systems®Multi-Service routers and Integrated Multi-Service Router series media verification and encryption features ensure that voice sessions are not affected by eavesdropping. Cisco's Unified Communication System consists of voice and IP communication products and applications, enabling organizations to communicate more efficiently-helping them streamline business processes and immediately obtain support for appropriate personnel and resources

Cisco disables Some uncommon Services 1. Cisco Discovery Protocol CDP is a Cisco dedicated protocol that runs on Layer 2 of all Cisco products, shared basic device information with other directly connected Cisco devices. Independent of media and protocols. Hackers can use CD

For many years, Cisco PIX has been a firewall established by Cisco. In May 2005, however, Cisco launched a new product, the Asa,adaptive security appliance, as an adaptive safety product. However, PIX is still available. I've heard a lot of people asking about the difference between the two product lines on a number of occasions. Let's take a look. What is

For many years, Cisco PIX has been a firewall established by Cisco. In May 2005, however, Cisco launched a new product, the Asa,adaptive security appliance, as an adaptive safety product. However, PIX is still available. I've heard a lot of people asking about the difference between the two product lines on a number of occasions. Let's take a look. What is

Using GNS3 and Cisco IOU to build routing exchange experiments-concept paperWhen it comes to simulators, everyone is familiar with Hyper-V, VMware, and VirtualBox operating system simulators (virtual machines), as well as emulators such as QEMU, which are commonly used in UNIX and Linux, which are object-oriented simulators. There are also arcade game simulators for arcade-oriented objects. Network simulator for network device or network operating sys

For the Cisco router security configuration command family, the following are 10 configuration commands, which are expected to be good for everyone. When talking about configuring a new Cisco router, most configurations depend on the type of the router and the purpose of the service. However, each administrator has his/her own command list for configuring each router correctly. I will share with you the lis

The modular stackable cisco Gigabit Switch is classified. The cisco Gigabit Switch meets the requirements through different settings. The following describes the specific requirements. In fact, a high-speed stacked port is a basic feature of a cisco Gigabit Switch that can be stacked. Modular cisco Gigabit Switch With

To select a cisco Gigabit Switch, You need to refer to vlan support. The choice of a cisco Gigabit Switch is a common problem. To measure the cisco Gigabit Switch, you need to pay attention to after-sales service and vlan support, MAC address count and other factors. Vlan support Vlan is a virtual LAN. Through vlan support, it can prevent the LAN from generating