issued, layer fourth switches to identify the start of a session by determining TCP start. It then uses complex algorithms to determine the best server to process the request. Once this decision is made, the switch links the session to a specific IP address and replaces the VIP address on the server with the server's real IP address.
Each layer fourth switch holds a connection table that matches the selected server's source IP address and the source TCP port. Then layer fourth switches forward
implement the above functions, almost no delay. The vswitches of both vendors can implement the 10 m, M, and gibit Ethernet functions, but the Berkeley switch isIt is designed for enterprise applications, while Alteon switches are used for institutions with a large number of web or FTP servers. The layer-4 Switching Technology of Alteon enables the performance and running status of servers.Based on the hea
Alteon is used in the use of dual-machine master and Standby mode of work, the corresponding group network according to different ways are divided into a direct-connected group network, single-arm network of two pairs of networks and triangular transmission network, the following in turn, detailed introduction. 1.1Direct Connect NetworkingThe network topology diagram is as follows: ( Standard Architecture )650) this.width=650; "Src=" Http://s1.51cto.c
servers for processing. The layer-4 switching function is like a virtual IP address pointing to a physical server. Its transmission services are subject to a variety of protocols, including HTTP, FTP, NFS, telnet, or other protocols. These services require complex load balancing algorithms based on physical servers. In the IP address world, the service type is determined by the TCP or UDP port address of the terminal. The application interval in the layer-4 switch is jointly determined by the s
strengthened. In China, Nortel Network has provided the core network equipment for many national education projects, including the Western University Campus network, the Zhejiang Education Research Network, and a large number of university campus networks.
Nortel Network Solutions for the Yunnan Academy of Art include the passport* 8600 routing switches deployed at the core of the network, the alteon* link optimizer for intelligent traffic managemen
comprehensive application infrastructure solution to achieve the maximum availability, scalability, and performance of security businesses and Web applications. These smart switches can effectively protect server groups from denial-of-service (DoS) attacks at a speed of 1 Gbit/s. They also provide excellent layer-4 7 and SSL connection performance to meet the needs of enterprise users.
Nortel Network
The new layer-4-7 Alteon switch provides powerful
Nicolas Gregoire
Alcatel PBX 4400 port 2533 install llatsni unknown thanks to Nicolas Gregoire
Alcatel PBX 4400 port 2533 halt tlah unknown thanks to Nicolas Gregoire
Allied Telesyn multi manager friend Admin
Allied cj8mo E-U telnet (none) Admin
Allied Telesyn multi secoff Admin
Allied Telesyn switch AT-8124XL 1.0.3 multi admin (none) Admin by Nicolas Gregoire
Alteon acedirector3 Console Admin (none)
Alteon
the third layer and fourth layer packets, according to the application interval to identify the business flow, the entire interval segment of the business flow distribution to the appropriate application server for processing. The fourth layer switch function is like a virtual IP, pointing to the physical server. It transmits services that comply with a variety of protocols, such as HTTP, FTP, NFS, Telnet, or other protocols. These operations are based on physical servers and require complex lo
.
In the hardware four-tier switching product area, there are some well-known products to choose from, such as Alteon, F5 and so on, these products are expensive, but value for money, can provide very good performance and very flexible management capabilities. Yahoo China in the beginning of nearly 2000 servers using three or four units Alteon was done.
software four layer Exchange
You know, after the p
transmits a variety of business compliance protocols that haveHTTP,FTP,NFS,Telnetor other agreements. These services require complex load balancing on the basis of physical serversalgorithm. In theIpWorld, Business type by terminalTCPorUDPport address, the application interval in the fourth layer is determined by the source and terminalIPaddress,TCPand theUDPThe port is determined together. in the hardware four-layer switching product area, there are some well-known products to choose from, suc
together.In the hardware four-layer Exchange product area, there are some well-known products can be selected, such as ALTEON,F5, these products are expensive, but value for money, can provide very good performance and very flexible management capabilities, Yahoo China at the beginning of nearly 2000 servers using three or four sets of Alteon to be done.Software four-layer switchingYou know the hardware la
header information of the third layer and the fourth Layer information packet, according to the application interval to identify the traffic flow, the entire interval segment of the traffic flow to the appropriate application server for processing. Layer Fourth switching functions are like virtual IP, pointing to the physical server. It transmits a variety of business compliance protocols, with HTTP, FTP, NFS, Telnet, or other protocols. These services require a complex load balancing algorithm
application interval in layer fourth switching is determined by the source and terminal IP addresses, TCP, and UDP ports.In the hardware four-tier switching product area, there are some well-known products to choose from, such as Alteon, F5 and so on, these products are expensive, but value for money, can provide very good performance and very flexible management capabilities. Yahoo China in the beginning of nearly 2000 servers using three or four un
server for processing. The fourth layer switch function is like a virtual IP, pointing to the physical server. It transmits services that comply with a variety of protocols, such as HTTP, FTP, NFS, Telnet, or other protocols. These operations are based on physical servers and require complex load balancing algorithms. In the IP world, the business type is determined by the terminal TCP or UDP port address, and the application interval in layer fourth switching is determined by the source and en
fourth switching is determined by the source and terminal IP addresses, TCP, and UDP ports.In the hardware four-tier switching product area, there are some well-known products to choose from, such as Alteon, F5 and so on, these products are expensive, but value for money, can provide very good performance and very flexible management capabilities. Yahoo China in the beginning of nearly 2000 servers using three or four units
Exchange uses the header information of the layer-3 and layer-4 information packets to identify business flows based on the Application interval and distribute the business flows of the entire interval segment to appropriate application servers for processing. The layer-4 switching function is like a virtual IP address pointing to a physical server. Its transmission services are subject to a variety of protocols, including HTTP, FTP, NFS, telnet, or other protocols. These services require compl
, including HTTP, FTP, NFS, telnet, or other protocols. These services require complex load balancing algorithms based on physical servers. In the IP address world, the service type is determined by the TCP or UDP port address of the terminal. The application interval in the layer-4 switch is jointly determined by the source and terminal IP addresses, TCP and UDP ports.In the field of hardware layer-4 switching products, there are some well-known products to choose from, such as
algorithms based on physical servers. In the IP address world, the service type is determined by the TCP or UDP port address of the terminal. The application interval in the layer-4 switch is jointly determined by the source and terminal IP addresses, TCP and UDP ports.In the field of hardware layer-4 switching products, there are some well-known products to choose from, such as Alteon and F5. These products are expensive, but value for money, it pro
products, there are some well-known products to choose from, such as Alteon and F5. These products are expensive, but value for money, it provides excellent performance and flexible management capabilities. Yahoo China used three or four Alteon servers on nearly 2000 servers.
6.2Layer-4 software exchangeAfter learning about the principle of the hardware layer-4 switch, the four-layer switch based on the OS
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