Tags: routing switching technology HSRP working principle three-layer Exchange STP function DHCP serviceFirst, the questionDay 011. What is a Vlan? What does VLAN do? is the interface of the default switch in that VLAN? What kind of Vlan??2. What is Trunk? What is the mode of Trunk? How to negotiate?3. What is the role of EtherChannel?4. What is DHCP? What is the role of DHCP?Day 021. What is the three layer Exchange? What is the difference between a two-layer switch and a three-tier switch and
Day 051. What is NAT? What are the implementation methods?NAT (Network address translation): By translating the private IP address of the internal network into the world's only public IP address, the internal network canTo connect to an external network such as the Internet.How NAT is implemented:The corresponding relationship of the IP address is one-to-one, and is constant, with the help of the static transformation, it can realize some specific service in the external network.Access to the se
(Config-router) #exitIf this is all configured, then use the ping command to test it!Here is a start-up-configuring HSRP Hot Spares:Configure on the active three-layer switch:Switch (config) #interface vlan 1Switch (config-if) #standby 1 IP 192.168.1.254Switch (config-if) #standby 1 priority 200Switch (config-if) #standby 1 track fastethernet 0/2Switch (config-if) #standby 1 preemptConfigure on the backup layer three switch:Switch (config) #interface vlan 1Switch (config-if) #standby 1 IP 192.1
10.0.0.1 received by the switch
SNMPTrap information
(Config) # snmp-server trap-source loopback0 use the IP address of the loopback0 interface as SNMP
Traps sending Source Address
2. Create a custom template
First, we need to obtain the corresponding OID of Cisco 3750 SNMP. I will put this OID at the bottom of the document.
Here I will talk about port inbound a
Cisco Unified Communication Components Cisco®The Unified Communication System has five basic components.
IP phone number
Call Processing SoftwareTelephone and terminalUnified Communication Application
Unified Communication ClientMessage ProcessingMultimedia ConferenceContact Center ApplicationCommunication InfrastructureManagement toolsIP phone numberThe IP telephone software enables enterprises to run voic
One of my customers has a VPN which I 'd like to access. they provided me with a copy of the Cisco VPN Client for Linux, and a "PCF" configuration file for the client. here's what I had to do to get the Cisco VPN Client working in Linux-and it does work just fine.
First we make a directory to put the bits and bobs in
alan@hactar:~$ mkdir ciscoalan@hactar:~$ cd cisco
In the previous article, we briefly introduced the IP telephone services of Cisco's Unified Communication System. Here, we want to give you a comprehensive understanding of this system, we will continue to introduce other parts. First, let's review the summary mentioned above.
Cisco Unified Communication System
Cisco Systems Company reg; leverages its wide range of products to provide a solution that can me
Cisco SDM is a good tool for vro security configuration. It features easy to learn and allows users to easily complete vro settings. Cisco SDM is based on Cisco IOS®An intuitive Web device management tool developed by Software routers.
It simplifies router security configurations through smart wizard, allowing customers and C
PIX 515E Product Essentials and application environment
Cisco PIX 515E Firewall Application Environment
Cisco PIX 515E is an enhanced version of the widely used Cisco PIX 515 Platform, which provides industry-leading state firewalls and IP Security (IPSEC) virtual private network services. Cisco PIX 515E is designed fo
Previously, we introduced the Cisco Unified Communication System Structure and the IP address telephone part through the article. You should have some knowledge about it. In addition to the above two parts, we will now introduce other services to help you understand Cisco products.
Although these standard-based systems can be shared with a large number of third-party phones,
As a leader in the routing industry, there is a lot of market demand. Here we mainly analyze the Cisco router configuration issues. Cisco SDM is based on Cisco IOS? An intuitive Web device management tool developed by Software routers. It simplifies Cisco router configurations through smart wizard, so that customers an
security strategy and describes and defines available NAC methods.Advantages of NACAccording to 2005According to the CSI/FBI Security Report, although security technology has been developing for many years and its implementation is even more costly than millions of dollars, however, viruses, worms, spyware, and other forms of malware are still the main problems facing various organizations. The large number of security incidents that organizations encounter each year cause system interruptions,
The SIP Protocol provides a standard-based IP communication method for multiple devices and applications. This White Paper describes the support for the SIP protocol in the Cisco communications system. Cisco's Unified Communication System includes IP voice, data and video communication products and applications, which can help organizations communicate more effectively, simplify business processes, and achieve higher incomes.
Cisco Unified CallManager is a call processing component in Cisco Unified Communication system. It is a scalable, distributed, and highly available enterprise IP voice call processing solution.
By supporting the enhanced features of the Session Initiation Protocol (SIP) SIP user line side and the SIP relay side, Cisco uniied CallManager version 5.0 enhances the f
In front
0. 1. This article does not involve specific implementation, source code, or code profiling.
. This article does not argue the implementation details between Linux or Cisco IOS versions.
0. 3. Please note that this article is incorrect
Cisco is undoubtedly the leader in the network field, while Linux is the most dynamic operating system kernel. Linux can almost achieve all network features, but the
interface, as 650) this.width=650; "title=" image "style=" border-top:0px; border-right:0px; Background-image:none; border-bottom:0px; padding-top:0px; padding-left:0px; border-left:0px; padding-right:0px "border=" 0 "alt=" image "src=" http://s3.51cto.com/wyfs02/M01/7E/F8/ Wkiom1cofuzwigmjaabldxzzww8920.png "" 244 "height="/> Fill in the contents as follows: Name #Discovery names: Network interface Type #选择agent的模式 Choose to use the Agent:snmpv2 agent Key #填写所需的Key值, because it is auto-discove
PIX 525 Product Essentials and application environment
Cisco PIX 525 Firewall Application Environment
The Cisco Secure PIX 525 Firewall is part of the world's leading Cisco Secure PIX Firewall series, providing unmatched security, reliability, and performance for today's network customers. Its full firewall protection and IP Security (IPSEC) virtual private Netwo
This article mainly to give you detailed Cisco VN-LINK network services, so how to solve the network challenges of virtualization? How can we enhance the security of VMS? This article provides detailed answers.
Cisco is working with VMware to launch the next-generation server virtualization network technology. Cisco®By integrating hypervisor, VM, network, and sto
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