cisco 3550

1. Unplug the power cord of the vswitch, press the switch Mode button, and re-plug the power cord of the vswitch. Release the Mode button after the LEDs on Port 1x are off. 2. For the Catalyst 2940/2950 L series: Unplug the power cord of the switch, hold down the Mode button of the switch, and re-plug the power cord of the switch. Release the Mode button after the stat led is off. 3. For the Catalyst 2955 series: There is no external Mode button in Catalyst 2955, so you cannot use the previous m

iOS is the core of router switch devices, iOS full name Internet operate system, Chinese is the meaning of the network operating system. He is like the computer operating system windows, although it is software but there are problems can not do any software operation. So if there's a problem with iOS, the routing switch will not work and the configuration commands will be gone. We can only fix it by reinstalling iOS. This article takes Cisco

Note: network upgrades cannot only focus on performance improvement, because the speed brings a temporary pleasure to the IT department ...... Cisco's IT department considers other factors when upgrading the LAN, such as management, maintenance, and spare parts ...... In many cases, Cisco first tries to solve the difficulties it encounters and designs corresponding solutions. After the Cisco IT team tests a

Multimedia conferences have always been an attractive attraction for enterprises to achieve unified communication. Now let's take a closer look at the content included by the Cisco Unified Communication Multimedia Conference solution. Let's take a look at its specific structure, system integration, supported protocols, features, and other content. Cisco Unified MeetingPlace and

The implementation of the multi-port Cisco switch module is a common problem. How to configure the Cisco switch module, any problems related to ports will be fully resolved in this article. Cisco switch module adaptive 1/2 Gbps interface: provides high-performance connections and is compatible with existing devices. ISL, the highest-performance inter-switch link

Precautions and categories for purchasing cisco Gigabit Switches. We will introduce the precautions for cisco Gigabit Switches. Many people may not know how to classify cisco Gigabit Switches, after reading this article, you must have gained a lot. I hope this article will teach you more things. At present, Gigabit Ethernet has become a strategic choice for high-

This article describes the upgrade steps for Cisco IOS software mirroring on the access router platform. The upgrade instance for the 2600 and 3600 series routers also applies to the router platforms listed below. Cisco IOS software filenames may vary according to Cisco IOS software versions, feature settings, and platforms. This article describes the following

With the help of today's advanced smart enterprise networks, enterprises can effectively deploy e-commerce and other applications, thus realizing the optimized combination of labor and the globalization of business. These powerful networks can connect many remote sites, branch offices, mobile employees, partners and customers to provide services for thousands of users. However, there is still a problem that all networks are increasingly threatened by the increasing number of security risks on En

Three attack methods bypass Cisco TACACS + Original article: 3 attacks on cisco tacacs bypassing In this article, the author introduces three methods to bypass TACACS on Cisco devices.No.1 DoS attacks bypass Cisco TACACS + No. 2 Local cracking PSK bypass Cisco TACACS + No. 3

The following are the modules supported by vswitch 4500: WS-F4531-Cisco Catalyst 4500 NetFlow service daughter WS-X4148-FE-LX-MT-Cisco Catalyst 4500 Fast Ethernet Switching Module, 48 Port 100BASE-LX10 Single-Mode Optical Fiber SMF) MT-RJ) WS-X4148-FX-MT-Cisco Catalyst 4500 Fast Ethernet Switching Module, 48 Port 100BASE-FX multimode fiber MMF) MT-RJ) WS-X4148-RJ

The market demand for Huawei routers and CISCO routers is very high. So I studied the differences between the configurations of Huawei routers and CISCO routers. I would like to share with you here, hoping to help you. The features and configuration interfaces of Huawei routers and CISCO routers of the same grade are exactly the same, and some of them have also b

Different types of switches use different module design methods. as a leader in the switch industry, the performance of Cisco switch modules is still very good and has been recognized by many people. Cisco switch module adaptive 1/2 Gbps interface: provides high-performance connections and is compatible with existing devices. The highest-performance inter-switch link (ISL) in the industry: A PortChannel sup

The original Article is from BlackSun. It is translated in sleep hours. This is a very good article and I am very happy to share it with you! Warning: Do not use this to damage the cisco system or access the system illegally. This article is for the purpose of learning. It can only be used for legal actions and cannot damage any system. This article will show you step by step how to use the discovered defects to obtain illegal access. If you break int

DHCP server. The Debug DHCPC command provides error-correcting tools for the boot DHCP client feature. The PIX firewall commands that are used to implement the DHCP client are described in the IP Address command page and the Debug command page of the Cisco PIX Firewall Command Reference. Please see these command pages for specific information.Note the IP address of the external interface required by DHCP can also be used as the PAT Global address. Th

The appearance of "one machine" brings the efficient and quick office way for the enterprise. In today's network era, the new form of "network integration machine" will bring us what kind of new office form? Cisco ISR 881 is a multi-service router (Cisco 881) can be called a "network integration machine", he integrated the router, firewall, IPS, IPSec VPN, VoIP and wireless connection, and many other practi

Send Cisco commands via SNMPAn article by Fabio Semperboni Tutorial inShare136 Tweet In the article "How to save configurations using SNMP", I has explained how to get the Cisco configuration using SNMP. Now, I explain how to send commands via SNMP using the "Ciscoconfigcopymib" MIB; With this MIB, you can replace Running/startup configuration, send commands, save The "show" Output or reload the devic

1.MAC address and port binding, the corresponding port of the switch will be down when it discovers that the MAC address of the host is not the same as the MAC address specified on the switch. When you specify a MAC address for a port, the port mode must be an access or trunk condition.3550-1#conf T3550-1 (config) #int F0/13550-1 (config-if) #switchport mode access//specify port mode.3550-1 (config-if) #swi

Cisco 1800 is another core product launched by Cisco. But can this product have a place in the market, it depends on its own performance and whether it is the type of switch the customer needs. CISCO products are widely used by network users. understanding of their typical products and their characteristics can give a general understanding of network devices, the

The features and configuration interfaces of Huawei routers and CISCO routers of the same grade are exactly the same, and some of them have also been improved according to the needs of domestic users. For example, the configuration and debugging interface that can be switched between Chinese and English makes Chinese users no longer have to face a lot of professional English words. In addition, its software upgrade, remote configuration, backup center

Now it seems that unified communication is not a new topic. However, Cisco, as the first Cisco to propose unified communication, has provided a lot of help for the platform construction brought by the integration of communication services to enterprises. Now let's take a look at several Cisco Unified Communication projects. Enterprise status and instant messages