five stages of STP: blocking, listening, learning, forwarding, and failure. The entire process takes 15 seconds. Therefore, if you are sure what you want to connect to, you can terminate this process.
Test the Ethernet Channel Configuration
The next step is to test the Ethernet channel, which is bound with the layer-3 Switch Port to provide more Ethernet connections. If one channel fails, the Ethernet cha
In recent years, with the rapid development of Internet/Intranet and the wide application of the B/S computing model, the cross-region and cross-network business has experienced a sharp increase. The industry and users are deeply aware of the bottleneck effect of traditional routers in the network. A layer-3 switch can operate on the layer-3 of the network protoc
support direct access to G.703ITU's standard on physical and electrical characteristics of various digital interfaces, including 64kbps and 2.048Mbps interfaces, the G/V converter must be used. In branch nodes, high-end routers are generally not configured, and even low-end routers are several times more expensive than switches. Therefore, the layer-3 Switch Technology Access solution is used, for networks
switches are Layer 2 network devices. They can understand Layer 2 network protocols, such as MAC addresses. Layer-3 switch technology constantly collects data during operations to create its own address table. This table is quite
H3C layer-3 Switch configuration: analyzes VLAN code instances. Currently, there are a lot of people using layer-3 switches, and maintenance of switches has become a problem that cannot be ignored. Only the three-tier switch is configured, which not only saves your time and effort on accessing the Internet, but also br
Three-layer Ethernet switch ip fdb table and its code example: How to filter incoming and outgoing packets in the access list when a three-layer Ethernet switch suffers from hardware processing problems in the following text, what about collecting evidence and contacting the security department or institution?
Hardware
queries VMPS to obtain the vlan id of the corresponding MAC address.
2) ISL label: ISLInter-Switch Link) is a protocol for transmitting VLAN information and VLAN data streams between switches, between switches and routers, and between switches and servers, by configuring ISL encapsulation on the port directly connected to the switch, VLAN allocation and configur
Case:There are two PCs at the front-end. After Windows 7 is started and the password is entered, the desktop file cannot be displayed (the desktop file is roaming on the win2008r2 server). In the lower-right corner of the screen, the Network Disk cannot be accessed. Refresh the desktop file.Analysis:The Network Disk prompts that it cannot be accessed because of two reasons. I. Hardware problems. Here the hardware mainly refers to the network. 2. softw
proven solution for this type of attack, based on several key technologies: Port Security FeatureDHCP snoopingDynamic ARP Inspection (DAI)IP Source Guard The following sections focus on the current very typical two-layer attack and spoofing how to combine and deploy the above technologies on a Cisco switch to prevent "man-in-the-middle" attacks, Mac/cam attacks, DHCP attacks, address spoofing, etc. i
The processing of layer-3 data packets by the Gigabit route switch technology, I insist on writing notes every day. Record your experiences and put more time into your career. In the traditional sense, only the device that processes Layer 2 Data Forwarding is called a switch
different vlan cidr blocks can belong to the same VLAN, and sites on different VLANs can also be on the same physical network segment.
There are also some disadvantages of using the network layer to define VLANs. Compared with the form of MAC address, VLAN based on the network layer needs to analyze the address formats of various protocols and convert them accordingly. Therefore, a
.
* Vro
The vro is located at the network layer, which can isolate conflicting domains and broadcast domains. Each subnet (subnet) belongs to a broadcast domain. Broadcast cannot be sent between different subnets. Therefore, you must use a router (or a layer-3 Switch with routing functions) to control broadcast ). After a vro is used, the network Interface (LAN I
problem. It has been integrated into a layer-2 smart switch to complete access security review for users.
802.1x is a newly standardized LAN access control protocol that complies with the IEEE802 protocol set. It is called Port-based access control protocol. Based on the advantages of IEEE802 LAN, it provides a method to authenticate and authorize users connecte
The instance explains VLAN division and configuration issues in layer-3 Switch configurations. vlan division and configuration issues cannot be avoided in layer-3 Switch configurations. Generally, there are four categories, how to retrieve it becomes a concern. This article explains how to set VLANs in depth from the p
Lab name: Use a layer-3 Switch to implement communication and rip routing between different VLANs
Tutorial topology:
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Tutorial steps:
(1) first configure the VLAN for the switch, and then assi
also some disadvantages of using the network layer to define VLANs. Compared with the form of MAC address, VLAN based on the network layer needs to analyze the address formats of various protocols and convert them accordingly. Therefore, a layer-3 switch that uses network layer
"/>After testing, the network all normal. Experimental success!2.2 Single-arm routing-three-layer switch configuration(1) The same, according to the parameters given below to configure;650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M02/82/58/wKioL1dRjmaT9lRCAAAuJKmTddA810.png "title=" Picture 23.png "alt=" Wkiol1drjmat9lrcaaaujkmtdda810.png "/>(2) Config
From: http://nettao.blog.51cto.com/386537/211216
I,
Vrrp
Introduction:
Virtual router redundancy protocol
Virtual
The proposed router redundancy protocol aims to improve the reliability of the router (layer-3 Ethernet switch) and the external connection by using the backup mechanism. Generally, a default route is set for all hosts in the LAN to specify the default route.
Gateway, which enables communicat
hacker attacks and virus intrusion, The vswitch must be able to maintain its efficient data forwarding rate without being disturbed by attacks, this is the most basic security function required by the vswitch. At the same time, as the core of the entire network, vswitches should be able to differentiate and control permissions for users who access and access network information. More importantly, vswitches should also work with other network security devices to monitor and block unauthorized ac
How to use a vro to connect different VLANs of a single-layer switch
Some simple configurations of the experiment
First configure PC
PC1 IP: 192.168.1.1 subnet mask: 255.255.255.0 Gateway: 192.168.1.254
PC2 IP: 192.168.1.2 subnet mask: 255.255.255.0 Gateway: 192.168.1.254
PC3 IP: 192.168.2.1 subnet mask: 255.255.255.0 Gateway: 192.168.2.254
PC4 IP: 192.168.2.2 subnet mask: 255.255.255.0 Gateway: 192.168.2.2
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