802 1 q vlan

VLAN configuration for linux Nic in virtual deployment (1) This article from Bkjia "Drop water stone Sun Jie" blog, original address: http://xjsunjie.blog.51cto.com/999372/1633815 If the switch port connected to the server has been configured with TRUNK in advance and allows specific VLANs to pass through, the server Nic must be configured with the corresponding

the correct port, or sends the packet to the correct VLAN when the packet is a broadcast packet. These four-byte long 802.1Q are appended to the Ethernet packet header, followed by the source address. The first two bytes contain 81 00, which is an 802.1Q tag protocol type. The last two bytes contain a possible priority, a flag, and a 12-bit VIDVLAN Identifier ). The VID value ranges from 0 to 4095, and both 0 and 4095 are reserved. The default value

The introduction of vlan of a Huawei switch and three VMPS modes. In the explanation of vlan of a Huawei switch, there are three VMPS modes (but User Registration Tool, namely URT, only supports open mode ). How to configure dynamic vlan and VMPS of a CATALYST 4500 series switch? This article takes cisco ios 12.2 (31) SGA as an example.

Vlan configuration ideas: access, Trunk) 1) create a Vlan Configure static VLAN on an IOS-based switch: Switch # vlan database Switch (vlan) # vlan-num name

the VLAN is logical rather than physical, you can avoid geographic location restrictions when planning the network. VLAN division method Port-Based VLAN) Protocol-Based VLAN) MAC-Layer Grouping) Network-Layer Grouping) IP Multicast group-based VLAN (IP Multicast Grouping) P

VLAN and Trunk (1) Network performance is an important factor affecting business efficiency. Segmentation of large broadcast domains is one of the ways to improve network performance. A router can block a broadcast packet on an interface. However, the number of LAN interfaces of a router is limited. Its main function is to transmit data between networks rather than provide network access for terminal devic

1. Topology Map: 2. Interface configuration: R1 (config) #int f0/0 R1 (config-if) #ip add 10.1.1.1 255.255.255.0 R1 (config-if) #no sh R2 (config) #int f0/0 R2 (config-if) #ip add 10.1.1.2 255.255.255.0 R2 (config-if) #no sh R3#vlan data R3 (VLAN) #vlan 10 VLAN T

PC with Address: C1 192.168.10.10 192.168.10.1 C2 192.168.20.10 192.168.20.1 C3 192.168.10.20 192.168.10.1 C4 192.168.20.20 192.168.20.1 Requirement 1: SW1 (config) #no IP routing SW2 (config) #no IP routing SW1 (config) #vlan

default, a vro does not forward broadcast traffic. Therefore, it can be used to separate broadcast domains. Creating a broadcast domain with a vro reduces the broadcast traffic and provides more bandwidth for unicast communication. Each vro port is connected to a separate network, broadcast traffic is limited to the lan cidr block where the broadcast is sent. However, there are usually few vro network interfaces (1 ~ 4 or so), the number of broadcast

interfaces and word interfaces: Single-arm Routing Computers in different VLANs must use vrouters for communication, even if they are on the same vswitch. Each VLAN can have an Ethernet port connected to a router. In this way, if you want to implement communication between N VLANs, the router requires N Ethernet interfaces and also occupies N Ethernet interfaces on the switch. Single-arm routing provides a solution. The vro only needs an Ethernet in

communicate between virtual networks is inevitable. ISL protocol between switches The ISL (Interior Switching Link) protocol is used to implement VLAN relay between switches. It is an information packet marking protocol. Frames sent on ISL interfaces are composed of a standard Ethernet frame and related VLAN information. As shown in, data from different VLANs can be transmitted on interfaces that support I

virtual workgroup can contain departments and working groups in different locations, without having to reconfigure any ports physically, thus realizing that network users are not related to their physical locations. The Virtual Network Technology divides traditional broadcast domains into independent sub-broadcast domains as needed, and limits broadcast in virtual working groups. Due to the narrowing of the broadcast domains, the proportion of bandwidth consumed by broadcast packets in the netw

650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/6F/DC/wKiom1WreSODgMBLAAL5nWQGVsw704.jpg "title=" 1.jpg " alt= "Wkiom1wresodgmblaal5nwqgvsw704.jpg"/>Set on Router 1:System View:return to User View with Ctrl + Z.[H3c]user-interface vty 0 63[H3c-line-vty0-63]authentication-mode Password[H3c-line-vty0-63]set Authentication Password Simple Wudi[H3c-line-vty0-63]exit[H3c]dis IP int b*down:administrati

Explanation of VLAN principles that Tom can understand (1) Why VLAN? 1. What is a VLAN? VLAN (Virtual LAN), translated into Chinese as "Virtual LAN ". A lan can be a network composed of a few home computers or an enterprise netwo

H3C inter-VLAN routing Experiment 1On vro1 1, set

using ASIC hardware to achieve routing and switching at line speed, the latter represents the fast ip of 3com, and the virtual fast Security Network of cabletron. The method used is to route the network at the first layer, then, the second layer switches the end-to-end network stream data group. This is the policy of "one route, then switch. The powerful functions of the layer-3 Exchange router are as follows: 1) routes are calculated based on the L