Note: switchport mode trunk can run directly on the 2950 switch, which enables 802.1q directly. To enable the relay function on vswitches such as 3550 and 4500, you must first select the encapsulation method, that is, run switchport trunk encapsulation dot1q.Sw0 # vlan databaseSw0 (vlan) # vtp domain ContosoSw0 (vlan) # vtp password ContosoSw0 (
The VLAN mentioned here is a VLAN that complies with the IEEE 802.1Q standard.The frame structure is as follows:|da|sa|tag| type| date| crc|VLAN frames Add a 4byte long tag field to the source MAC address, relative to normal Ethernet frames. This field is specifically divided into:| tpid|priority| cfi| Vlan id|Tpid:tag
option is to submit only the specified name list (you can use show Security acl ip name editbuffer to view control entries not submitted to the content in the editing buffer ), the all option is used to submit all unwritten vacls.3. Map to VLANBoth vacl and ACL must be mapped to the target object after submission, for example, interface vlan1 // ip access-group 101 out: apply access-list 101 to the out direction of the vlan1 interface. 101 indicates the ACL number and is associated with the cor
Tag: mode command using log ENC Global relay name configurationSwitch interface type:
Access: Access mode, PC via switch internet this way
Trunk: Trunk mode, inter-switch connection in this way
Switch VLAN creation mode:
Database configuration mode
Global configuration Mode
Database configuration mode: - name Vlan20 (VLAN name optional) switch (
"Copyright notice: Original translation articles, translation level is limited, errors are unavoidable, The Translator is not responsible for the consequences of errors or omissions in the article, please be careful to reprint them. Reproduced please retain this statement and source: blog.csdn.net/shallnet, download the English version of the book "It seems that the spanning tree protocol is still not perfect enough to be satisfying, in fact, because all of the discussions we discussed earlier i
Programmers are lazy, you know.
Ten years of life and death two boundless, write procedures, to the dawn. Thousand lines of code, where the bug is hidden. Even if the line and how, toward the change, Xi heartbroken. Lead a new idea every day, change every day, daily busy. Care without words, only tears thousand lines. Every night the lights are dim, the night is hard to sleep, and overtime. Gossip less, directly on the code:
Hua San switch operation command
Enter user name return, enter passwo
Cisco single-ARM routing configurationOne-arm routing, which is to set up multiple logical subinterfaces on the router, one VLAN for each sub-interface. The data on each sub-interface is passed on the physical link to be labeled encapsulated. Cisco devices support ISL and 802.1q (dot1q) protocols. Huawei only supports 802.1q.The difference between dot1q and ISL: dot1q is a generic VLAN protocol model for va
H3C S3100 Switch configuration VLAN
I. Basic settings
1. the console line is successfully connected.
2. Enter System Mode
3. Change the device name
[H3C] sysname TEST
4. view all configuration information
[H3C] display current-configuration // display this is to view the device information in the current path
5. Create and enter VLAN 10
[H3C] vlan
We know that the DHCP service is not able to work in multiple VLANs, so by default, DHCP and VLANs cannot coexist, and the broadcast information emitted by DHCP clients cannot be broadcast across multiple VLANs, and when the client is dispersed across multiple VLANs, Broadcast data failed to send because the client could not be found. How to solve this problem? Configuring a DHCP server for each VLAN is the easiest way to do it, but it's less efficien
VLANThe typical configuration process is as follows:
Networking Diagram
Figure 1-1 port-based VLAN networking
Application Requirements
As shown in Figure 1-1, Switch A and Switch B connect Host1/Host2 and Server1/Server2 used by different departments.
To ensure data isolation between departments, you must divide Host1 and Server1 into VLAN100 and Host2 into VLAN200. Set the description characters for the two VLANs to "Dept1" and "Dept2" respectively
VLAN network structure of Small Enterprises
As we know, the structure of an enterprise is complicated. They have different departments. Next we divide VLAN networks of a small enterprise by department. Assume that a small enterprise network has a Finance Department, channel department, server area, and other departments. Because the number of computers in a small enterprise network is not very large, the
Device Connection: Router ex-r eth0 connection light cat dial, eth3 connection switch gs105e, switch gs105e ETH3 connection wireless APRequirement: Router dial-up Internet, wireless network with different SSID can connect different VLAN, and 4th Port of switch connects Nas, belong to one of VLANThat's about the length of the picture.
Router Setup VLANThe main reference http://bbs.ubnt.com.cn/forum.php?mod=viewthreadtid=18110, but by this setting i
First, the basic knowledge:
1 type of VLAN:
1. Local VLAN: Members of the same VLAN are on a single switch;
2. End-to-end VLAN: Members of the same VLAN are dispersed to different switches;
2 The advantages of VLAN:
1, contro
Tags: ble default ima MAC address picture demand MIT share based onBuild the following routing and switching topology diagram according to the project requirements:1: Use PC1 ping pc2 to enable the switch to capture 4 PCs and MAC addressesSee what MAC addresses the switch learns2: Configure the interface between the switch and PC, the MAC address of the root PC is added to the respective VLAN, followed by the Hybird authenticationNote: In the case whe
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 brings more highlights to your network life.
Note: There are three VLANs, 192.168.10.0; 192.168.20.0; 192.168.30.0, And the subnet mask i
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