vlan book

In this section we look at how to implement and configure the following VLAN networks in an experimental environment Configure VLANs Edit/etc/network/interfaces, configure eth0.10, Brvlan10, eth0.20, and Brvlan20.The following shows the modification of/etc/network/interfaces with Vmdiff.Restart host, ifconfig each network interfaceUse Brctl Show to view the configuration of the current Linux Bridge. Eth0.10 and eth0.20 were hung on brvlan10 and Brvlan

How to Use H3C Huawei switches: about port and VLAN technology, this article describes QoS, VLAN technology, and switch port speed limit, port configuration, etc, the author gives a comprehensive introduction to all the relevant knowledge about how to use H3C Huawei switches. H3C Huawei switch usage system information: this page is mainly used to display and configure some system parameters of the switch. T

VLANIt is a protocol proposed to solve Ethernet broadcast problems and security. It adds VLAN headers Based on Ethernet frames and divides users into smaller working groups using VLAN IDs, restrict mutual access between users in different working groups. Each working group is a virtual LAN. Let's implement the configuration through practice. I. Networking requirements: PC1 and PC2 connect to the vswitch por

Vlan switching technology Vlan is built on a LAN switch and implements division and Management of logical working groups in a software manner. Its Switching technology generally includes port switching, three types of frames exchange and Token exchange. 1. the port switch is also called the configuration switch. The initial method is to manually configure the port to one or more shared hubs connected throug

Tags: Lan Ethernet access Cisco vlanVlan ID rangeRangePurpose0, 4095RetainedUsed by the system1NormalCisco default vlan can be deleted2-1001NormalYou can create and delete1002-1005NormalCisco default vlan used for FDDI and ring cannot be deleted1006-1024RetainedUsers cannot view and use1025-4096ExtensionFor Ethernet onlyHow to create a VLAN1) configure in privileged modeSwitch #

Cisco's DHCP and VLAN synthesis experimentExperimental content:PC1 and PC2 need to obtain an IP address through DHCP Server . R1 do one-arm routing and DHCP Relay,R2 interface f2/0 IP address is 192.168.3.1. and PC1 belongs to Vlan10,PC2 belongsto Vlan20,R3(DHCP Server ) belongs to VLAN30. PC1 belongs to 192.168.1.0 network segment, Gateway is 192.168.1.254 PC2 belongs to 192.168.2.0 network segment, Gateway is 192.168.2.254Experimental extension Ma

After VLAN is divided on a vswitch, computers in the VLAN cannot communicate with each other. Layer-3 devices are required for Inter-VLAN communication. We can use a router to implement this function. If you use a router, the single-arm routing mode is usually used. In practice, most of the routes between VLANs are implemented through layer-3 switches. layer-3 sw

Early Stage In the early days, a vswitch was only a physical device and had no logic functions or IP addresses. It forwards data packets like a hub. The only advantage is that it does not live in a large conflict domain like a hub, causing a traffic accident all day long. 　　 Differences between VLANs and CIDR blocks: CIDR blocks are IP address segmentation specifications, which are private CIDR blocks, and which are public CIDR blocks, the number of available IP addresses in each CIDR block.

Huasai firewall implements single-arm routing to implement inter-VLAN communication network equipment: One USG2130, several S2700 switches www.2cto.com customer requirement: VLAN division on the switch and single-arm routing on USG2130, at the same time, mutual access is required between the three CIDR blocks, and the three CIDR blocks can be connected to the INTERNET. Because the USG2130 has only one layer

[Lab name]Implement VLAN across vswitches[Background description]Assume that a company has two departments: Sales Department, Technical Department, and sales department. The Personal Computer System of the sales department is connected to different switches, and the two Departments need to communicate with each other. However, for the sake of data security, the sales department and the technical department need to be isolated from each other, and appr

[Cisco] DHCP relay, layer-3 Switch VLAN Routing PracticeThe experiment topology uses the GNS3 0.8.6 simulator to build a DHCP server using Red Hat 6.5. The experiment requires configuring a layer-3 Switch VLAN routing so that VLAN10 and VLAN20 members can access each other. Performs DHCP relay for layer-3 switches so that VLAN10 and VLAN20 members can obtain IP addresses through the DHCP server. Tutorial pr

I have two sets of 3560 to do HSRP, the following connected more than 10 2950 or 2960 (each with two lines, one will be blocked by the spanning Tree Protocol), 3560 is zoned 3 VLAN1, 2, 3, the following 29 is not zoned VLAN, The interface between the two ends of the switch is set to access mode, and now the problem is that 29 of the 3560vlan1 are not reported, and 29 of VLAN2 and 3 are reporting similar%cdp-4-native_vlan_mismatch:native VLANs. Mismatc

Implementation method:1, single-arm routing2, 3-layer SVI interfaceSingle-arm routing experiment:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/79/32/wKioL1aLbamCAtVrAACavPTPhIE018.png "title=" QQ picture 20160105151501.png "alt=" Wkiol1albamcatvraacavptphie018.png "/>R1:int e0/0No Shuint e0/0.1EnCap dot1q 10IP Add 11.1.1.1 255.255.255.0No Shuint e0/0.2EnCap dot1q 20IP Add 22.1.1.1 255.255.255.0SW1:int F0/10SWI Trunk EnCap dot1qSWI Mode TrunkSWI Nonegotiate Close NegotiationSWI Trun

Some users may find this problem when connecting to the EPON switch using the multi-Wan of h618b. When the route is powered on, the port of the EPON switch will be closed. What is the problem? Some people say that they are not compatible, and some say that they have detected a computer. Otherwise, my personal analysis may be due to the following reasons: For example: As we all know, whether it is h618b or VLAN switch, its

frames for a group MAC address. The GMRP protocol waves Such group information between switches on the web, allowing the switch to update their filtering information to achieve extended service functions. The switch has filtering services and extended filtering services without any configuration. For older switches, hubs, routers, because it does not support dynamic multicast address filtering, it is necessary to extend the filtering configuration on the corresponding ports to which they are c

encapsulation Status Native VLANGI0/1 Auto 802.1q trunking 1# This port is already configured in trunk mode and is packaged in 802.1qPort Vlans allowed on trunkGI0/1 1-4094Port Vlans allowed and active in management domainGI0/1 1-2,10,20,30,40,50,60,70,80,100,110,120,150,160Port Vlans in Spanning tree forwarding state and not prunedGI0/1 1-2,10,20,30,40,50,60,70,80,100,110,120,150,160d-2960-3#conf T # goes to global configuration modeD-2960-3 (config) #vtp mode client# Configure the VTP mode to

Previously introduced the RADIUS wireless authentication scheme based on Windows2012 NPS, article: http://blog.51cto.com/hubuxcg/1636719?cid=702921#702921 today, based on the Windows NPS RADIUS Configuration Dynamic vlan!For the initial configuration section of NPS, refer to the previous article, which is only described in connection with VLAN configuration.1. In the NPS policy, add the connection policy, s

0x00 Preface With the development of network technology, network lines become more and more complex. Penetration testers reach the border server through injection, upload, and other basic or advanced script penetration methods on the web. Further in-depth access will face more complex networks, such as messy vlan environments. What is vlan: http://baike.baidu.com/history/id=9328829 Test Topology 0x01 test

Type" field eight bytes to the right from its original location in Ethernet II. · Payload-same as 802.3LLC frame. The valid data length range of 802.3SNAP is 38 ~ 1492 bytes. · FCS-same as 802.3LLC frame. The value must be recalculated. IEEE 802.1Q encapsulation: The header of 802.1Q is not actually enclosed in the original frame, but in the Ethernet II frame, add a 32-bit field between the MAC source address field and the "Ethernet Type" field in the original frame ). The fields in the I

Cisco's DHCP and VLAN comprehensive experiment content details, ciscovlan Cisco DHCP and VLAN comprehensive experiment Lab content: The IP addresses of PC1 and PC2 must be obtained through the DHCP Server. R1 performs single-arm routing and DHCP Relay. The IP address of f2/0 on the R2 interface is 192.168.3.1. PC1 belongs to vlan10, PC2 belongs to vlan20, and R3 (DHCP Server) belongs to VLAN30. PC1 belongs