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802.1q VLAN HOWTO Doing 802.1q trunking to a Ethernet switch is really easy. I describe two methods-a text only one for servers, and a GUI one for desktops.The VLAN number that is interface uses always gets appended to the physical after a dot, so for interface a instance Rface eth0 using VLAN number would be called eth0.99. The instructions below all assume your want to co
interference between mobile users, adjacent channel interference, the same frequency interference and so on. (4) System and network structure is complex. It is a multi-user communication system and network, must make the user not interfere with each other, can work in harmony. In addition, the mobile communication system should also be connected with the local telephone network, satellite communication network, data network and so on, the whole network structure is very complex. (5) Require hig
Switch Basics: Link Aggregation definition
Link aggregation technology is also known as backbone Technology (trunking) or bundled technology (bonding), its essence is to two devices between several physical link "combination" into a logical data path, called an aggregation link, such as Figure1 signal. Physical links between switches Link1, LINK2, and Link3 form an aggregation link. The link is logically a whole, and the details of the internal compo
is Jicai, the marketing department is VLAN3, the name is Shichang.
2 The router uses Access control lists and routing points to control the flow of network data to achieve the security objective of the office network, so that VLAN2 and VALN3 become two security zones.
Overall planning of the programme
Now take the Cisco Catalyst 1900 switch, Cisco 2600 router As an example, write out the detailed configuration of the scheme.
Planning for VLANs
(1) The working mode of the VLAN:
We use stat
, only through this hundred gigabit bandwidth. While two of switches are stacked together, stacked cables will provide more than 1G of backplane bandwidth, greatly reducing bottlenecks. The switch now has a
The new technology--port trunking, by which multiple twisted-pair wires can be cascaded between two switches, which multiplies cascade bandwidth.
Cascading also has a stack that is not up to the goal of increasing the connection distance. For exa
, Product introduction
Currently, the CISCO switches common in network integration projects include the following series, 1900/2900 series, 3500 series, 6500 series. They are used in the low-end, midrange, and high-end of the network, respectively. Here are a few of the products for each series:
1, low-end products
First of all say low-end products, 1900 and 2900 are low-end products typical. In fact, in the low-end switch market, Cisco does not occupy a particular advantage, because the 3Com
The OSI seven-layer model enables reliable communication between different networks of different systems through seven hierarchical structural models, so its main function is to help different types of hosts achieve data transfer.
The nodes that complete the relay function are often referred to as trunking systems. In the OSI seven layer model, the relay systems at different tiers have different names.
The level at which a device works, the key is to
cache (that is, in memory), so the trunking overhead is minimal.
(3) master-slave copy attention point
1, master logs the action statement to the Binlog log, and then grants the slave remote connection permission (master must turn on the Binlog binary log function, usually for data security considerations, Slave also turns on Binlog function).
2, slave Open two threads: IO thread and SQL thread. Where: The IO thread is responsible f
of the default stack to create the Vmkernel port. The Vmkernel port is also known as vmknic.5. The virtual machine Port Group is a set of virtual switch ports that share a set of identical configurations that allow virtual machines to access other virtual machines configured on the same port group, accessible Pvlan, or on a physical network.6, virtual LAN, virtual or physical switch configured on the logical LAN, can provide efficient traffic segmentation, broadcast control and security, only f
=" http://7xaxaa.com1.z0.glb.clouddn.com/2.jpg "width=" 395 "height=" 314 "alt=" 2.jpg "/>in the vast majority of scenarios, our applications are read-write. Using this architecture, we can effectively reduce the pressure on Master reading by reading and writing separate technologies . We can do some data backup, data mining and other work on the back-end slave. However, if the repository is more, and the main library is responsible for other requests, the pressure of the main library will incre
the link aggregation group to standby state in the group and failover order of the distributed port Group 3744.3.9 assigning the physical NIC to port 376 of the link aggregation group4.3.10 Set the link aggregation group to active in the group and failover order of the distributed port Group 3774.3.11 Check Verification 3784.4 Understanding VLAN Types in vsphere virtual switches 3804.4.1 Network topology Description 3814.4.2 Virtual Port Group "No VLAN" configuration 3824.4.3 Virtual Port Group
cannot guarantee 24 × 7 uninterrupted work. In addition to hardware faults such as device or module damage and transmission line interruption, the core switch may be paralyzed due to network traffic overload and excessive task load.
Therefore, to ensure the stability of the network and ensure that important services are not interrupted, necessary countermeasures must be taken. In general, this is a redundant connection, that is, creating multiple connections between the core switch and the back
IP Broadband Metropolitan Area Networks. Supports VLAN Trunking. Port Configuration: 24 10/100 BASE-TX ports and 2 GE expansion module slots. Five GE extension modules are supported. Due to cost considerations and sufficient bandwidth performance, this solution does not use the GE extension module, but uses the TRUNK technology to achieve MB uplink bandwidth. This scheme requires one purchase.
Quidway S3050 layer-3 switch is a L2 line rate product fe
-way Asymmetric mode between upstream and downstream ), it can also bind a Trunking Connection Based on the Data MAC address to achieve Traffic Sharing and fault self-recovery. The V5924VDSL vswitch of the Chashan network provides an Ethernet CoS Function Based on P and supports QoS classification. On this basis, you can implement IGMP Video Multicast in a broadband network. In addition, V5924 supports full-duplex Traffic Control of 802.3x and network
Vswitch basics: Definition of link Aggregation
Link aggregation technology (also known as Trunking) or bundling technology Bonding) is essentially a logical data path that combines several physical links between two devices, it is called an aggregation link, as shown in Figure1. The physical links Link1, Link2, and Link3 between vswitches form an aggregation link. The link is logically integrated. The internal composition and data transmission details
same IP address, and parallel links are aggregated into a logical link. In fact, this technology already exists in Sun and Cisco, known as Trunking and Etherchannel technology. it is also used in Linux 2.4.x kernel, known as bonding. The earliest application of bonding technology was on the cluster beowulf, designed to improve data transmission between cluster nodes. Next we will discuss the principles of bonding. what is bonding? it should start wit
not work in English.Example:The word congratulation is a long string of English letters. The word-wrap: break-word is regarded as a whole. If the end width of the line is insufficient to display the entire word, it will automatically put the entire word in the next line, rather than trunking words, this is an explanation that does not work for long strings. Word-wrap: normal is the default condition. English words are not separated.Conclusion:The fun
relay feature is not enabled by default. Trunking as SetNote: Click on the Radio box "only the following list except (X): When the list is empty, the description can relay any external mail, remember that usually we can not really do this, otherwise less than a few hours, the mail server crashes, we fit to add external network."If you select the "Allow all computers with authentication to relay and ignore the previous table" option, the server's rela
Today, people need to process, store, and connect more data in a smaller area. The best way that everyone can think of is to make good use of each rack unit and make full use of its potential. This situation also applies to passive connection products. How to plan the capacity, growth, space and power supply of the data center, and how to achieve high stability and reliability in a high-density environment requires meticulous work.
Requirement: ensures secure and reliable information transmissio
all our users and all the features we will release through the telephone system. We will publish the telephone system through the interface in use. If we configure Cisco solutions, we will have to stop using many of the things we are using today ."
"The Nortel-Microsoft alliance is a huge factor for us. This solution, which is built upon the investment of Microsoft, can be implemented without consideration. My technical staff only need to study a very small amount, which is of great significanc
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