switch vlan tagging

Switch Port vlan mode Ø the Acess port receives a packet to determine whether there is any VLAN information: If there is no vlan information, the PVID of the port is entered and the switch is forwarded. If yes, the packets are discarded directly (default) Ø send packets on t

Test topologyEnvironment: DHCP server and DHCP clients belong to the same VLAN, but clients belong to different switches, and the L2 and L3 switches turn on DHCP snooping to concludeconfiguration of the L3 switch172.28.27.0 255.255.255.0172.28.27.254 172.28.28.15 ! ! 27IP DHCP snooping information option allow-untrusted //must add this command because the L3 switch also has DHCP snooping

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 nece

The VTP password settings and Huawei switch vlan configuration experiment results show you how to configure the vlan of a Huawei switch. Many people may not understand the vlan configuration of a Huawei switch, VTP transparent mod

Tags: ref text S/4 share picture TE forwarding csdn vlan equalAcess PortTicker: Determine if there is VLAN information: if there is no pvid on the upper port, and exchange forwarding, if there is a direct discard (default)Text: The VLAN information of the message is stripped, sent directly outTrunk PortTicker: Determine if there is

To select a cisco Gigabit Switch, You need to refer to vlan support. The choice of a cisco Gigabit Switch is a common problem. To measure the cisco Gigabit Switch, you need to pay attention to after-sales service and vlan support, MAC address count and other factors.

Requirements: Requirements PC0 and PC1 can communicate, but not and PC2, PC3 communicationSwitch(config)#VLAN 1 #---"Creating VLANsSwitch(Config-vlan)#ExitSwitch(config)#VLAN 2Switch(Config-vlan)#ExitSwitch(config)#int range F0/1-2Switch(config-if-range)#switchport mode AccessSwitch(config-if-range)#switchport Access

access) 2 1 ~ 24 (Internet computer), 26 (router connection) VSwitch 2 20 1 ~ 3 (Marketing Department server), 25 (Connect to switch 1) 30 4 ~ 6 (product server)

Original web site http://blog.csdn.net/yygydjkthh/article/details/6750399 It is the specific forwarding process of the L2 Switch. The following describes the forwarding process in detail. First, let's take a look at what tpid means? Frames in the 802.1Q document of VLAN protocol are embodied in the following data packets: Here, the blue position is the 802.1Q header, and the specific meaning of each item

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

mode:disabledVTP V2 mode:disabledVTP Traps generation:disabledMD5 digest:0xec 0x30 0xEF 0x6F 0xa5 0x9a 0x39 0x7B# The password has been configured, but it is encrypted to showConfiguration last modified by 192.168.113.254 at 12-3-07 22:58:54# #稍等一会后, verify that you have learned the VLAN information of the core switch, and that it learns a small part of the process for 30 seconds.D-2960-3#sh

Router: interface FastEthernet0/0 ip address 10.3.5.2 255.255.0 duplex auto speed auto! Interface FastEthernet0/1 ip address 10.3.4.254 255.255.255.0 duplex auto speed auto! Interface Vlan1 no ip address shutdown! Router rip version 2 network 10.0.0.0! Layer-3 Switch on the left: spanning-tree vlan 10, 20, 30 priority 24576 !!!! Interface FastEthernet0/1 channel-group 1 mode on switchport trunk encapsulatio

I have just been familiar with the basic configurations of the VLAN division experiment of the switch VLAN division configuration (PT simulator). I am not familiar with this knowledge for too long. Please forgive me for any errors, this configuration is for you to learn about the Cisco simulator configuration case. Www.2cto.com

I am eager for the first time to switch between vlan routing and nat addresses of Cisco switches. I am very energetic and have an undefeated spirit. I am ready to continue to answer questions during multiple rounds of interviews. My little brother squashed his eyes and took out the bottom of the press box: If my company has two Internet interfaces, A and B, respectively. The following vswitch divides multip

[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 t

Cisco switch in the VLAN how to add multiple ports at a time, this is usually used in the process of our configuration, because if one of the add port, the workload will be very large, so need to add multiple ports at once, the following by the small set of specific operations to introduce 1, first through the Consolo port or telnet to connect the switch to ente

This article describes how to divide VLAN on a Huawei router and provides detailed operation commands. This article uses four PCs as an example to explain how to divide, I believe this article will help you. VLAN configuration instance of a Huawei router switch The principle is the same for the use of more than four pcpcs, so here I only use four PCs), Huawei rou

China 3 layer Switch VLAN isolation192.168.1.0---------g1/0/1 S SW g1/0/2-------192.168.2.0192.168.3.0-----------------------|192.168.4.0-----------------------|Prohibition of 1.0, 3.0, 4.0 and 2.0 visits[H3c]acl Num 3000[H3c-acl-adv-3000]rule deny IP source 192.168.1.0 0.0.0.255 destination 192.168.2.0 0.0.0.255//Forbidden 1.0 Access 2.0[H3c-acl-adv-3000]rule deny IP source 192.168.3.0 0.0.0.255 destinatio

directly switch from one port to another. R0 (config-if) # ip add 1.1.1.1 255.255.255.0 R0 (config-if) # no shut // you do not need to configure the frequency here. One CIDR block is enough. R0 (config-if) # exit R0 (config) # ip rout 10.10.10.0 255.255.255.0 1.1.1.1 The configuration of S2 is as follows: S2 # conf ter S2 (config) # int vlan 1 S2 (config-if) # ip add 10.10.10.100 255.255.255.0 S2 (config-

This article uses 4 pcs (more and less PC, the principle is the same, so here I only use 4 pcs), Huawei Router (R2621), switch (s3026e) each one, build a VLAN, realize the connection between virtual network and physical network. Implement firewall policies, and access control (ACLs). Programme description:The IP addresses and masks of the four PCs are listed below: P1 192.168.1.1 255.255.255.0 gateway IP is