cisco 2948

Many friends who use the Cisco router module have encountered many problems during use. Below are some basic solutions. More or less can solve some small problems. Problem description: The Cisco router module does not turn on the light, and does not turn on the light after it is turned on. Answer: If the module is broken, I have encountered this situation. Check if you recognize this

This tutorial describes how to start and configure Cisco Catalyst 1900 series switches.1. Tutorial PurposeThrough this experiment, you can master the following skills:Familiar with switch startup interface;Configure the vswitch;Understand the port number of the vswitch.2. device requirementsThis experiment requires the following devices:One Cisco Catalyst 1900 Series Switch with unlimited models and Enterpr

It is very important for Cisco router users to learn about how to restore their vro passwords. Here we mainly introduce two methods to help you quickly restore the vro password, when the Cisco Router password is forgotten or the enable password is lost, there are two methods to restore it, depending on the series of products you are using. The first method to restore the password of a

The Cisco router has a very high market demand. Here we mainly introduce the background of Cisco router and firewall. Firewall has become a key part of enterprise network construction. However, many users think that Cisco routers already exist in the network and some simple packet filtering functions can be implemented. So why should we use firewalls? The followi

MSTP intercommunication between Cisco and H3C switches 1. MSTP introduces the concept of "INSTANCE" INSTANCE and "REGION" REGION. An instance is a collection of multiple VLANs. In this way, you can bind multiple VLANs to an instance to save communication overhead and resource usage. "Domain" is determined by the domain name, revision level, and format selector. The relationship between VLAN and instance. The domain name, format selector, and revision

Investment Protection and Development Options With the development and changes of the Enterprise, you can leverage the Scalable Cisco stack architecture to ensure the synchronous development of your LAN. Cisco provides the industry's most flexible, scalable, and manageable stacking architecture for the Catalyst 3500 XL series and the Catalyst 2900 XL series switches with gigabit performance. You can create

VLAN database is configured, you must enter exit to save it;VLAN troubleshooting: physical connection> Switch configuration> VLAN configuration;Physical connections include CDP and duplex;The Trunk is a link between two vswitches;802.1 p: Priority of the 802.1qTAG field;Tunnel requires two tags: one for the enterprise and one for the carrier. The carrier can transmit VLAN, CDP, VTP, STP, and other information;Native VLAN is unique to 802.1q. It is vlan 1 and is used to manage VLANs;ISL will als

Configuration mode for Cisco routers Configuration mode Prompt Enter command Description User mode Route> User mode is the default mode when the router starts, provides limited access to the router, allows for non-destructive operations such as viewing the configuration parameters of the router, testing the connectivity of the router, etc., but cannot make any changes to the router configurati

Https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/security/configuration/guide/b_ Cisco_nexus_9000_series_nx-os_security_configuration_guide_7x/b_cisco_nexus_9000_series_nx-os_security_ Configuration_guide_7x_chapter_01.html Feature Description Changed in Release Where documented IP ACLs Added IPV6 Wildcard mask support for access lists and object groups for Cisco Nexus 9200, 9300-e

The technology of Cisco ADSL Router is very advanced. At the same time, compared with other types of ADSL Router, its products are still very advantageous. Cisco ADSL Router combines Cisco IOS®R's technical advantages provide business-level service functions for small offices and remote office staff of the company. It supports different levels of services, high-q

It is useful to know about Cisco router configuration. Here we mainly explain the specific steps of Cisco router configuration. Cisco routers once dominated enterprise wide area network applications. However, according to the CCID report in recent years, huawei and Cisco are gaining a competitive market position in ter

value of the temporary self-reverse Access Table item. The default value is 300 s, you can modify the global timeout value through ip reflexive-list timeout in global mode or set the timeout value in the corresponding application line, which takes precedence over the global setting value ). The basic format of the anti-list is: Ip access-list extended xxx Permit protocol source destination reflect name [time-out seconds] Ip access-list extended yyy Evaluate name) Finally, it is enabled on the i

Cisco routers are the leader in the routing industry. Their product quality is still very good. Cisco Wireless AP is also one of Cisco's most important products. Requirement Overview: A Cisco Wireless AP is used to build an enterprise wireless LAN. A user's notebook can log on to the wireless network without adding an AD domain. the user name and password of the

This article will discuss the importance of maintaining the password security of a Cisco router, explain the Cisco router mode, and show readers how to configure five passwords for a vro to protect network security. Causes of vro security protection using passwords First, as a Cisco device administrator, we must realize that vrouters do not have any automated pas

This article describes how to quickly install and maintain a vro from the aspects of control port interface connection, initialization and installation, and troubleshooting and detection of common routing faults. See the detailed description below. A terminal or PC configured with a Cisco router must also use a valid power supply. Cisco synchronous serial interfaces are commonly used. Different interfaces c

Cisco APIC Access Control Vulnerability (CVE-2015-4235)Cisco APIC Access Control Vulnerability (CVE-2015-4235) Release date:Updated on:Affected Systems: Cisco Application Policy Infrastructure Controller Cisco Application Policy Infrastructure Controller Cisco Application Po

The Cisco router has a very high market demand. At the same time, users are not familiar with some features. Here we will introduce some questions about the Cisco Router password restoration for your reference. How Cisco Router password is restored 1) The Cisco router stores several different configuration parameters a

It is very important to know some questions about Cisco router configuration. So I have studied the detailed introduction of Cisco router configuration statements, and I will share them with you here, hoping to help you. Cisco routers once dominated enterprise wide area network applications. However, according to the CCID report in recent years, huawei and

Different vro models and different cracking methods:The general method is the same:Enter monitoring mode: 1. Press ctrl + break 2 within 60 seconds, the register value starts with 0x0, and directly enters monitoring modeModify the register value to 0x2142. Load IOS directly without loading the configuration file.Summary steps:1. Restart ctrl + break2. confreg 0x2142 modify the register value to 0x2142Reset restart3. copy startup-config running-config to copy the startup information to the runnin

The Cisco simulator runs in a Windows environment and consumes resources. Therefore, Dynamips is installed on the CentOS6 Linux operating system to simulate Cisco routing and switching.1. Download:Download several required packages[Root @ cisco test] # wget http://www.ipflow.utc.fr/dynamips/dynamips-0.2.8-RC2-x86.bin[Root @ c