Introduction to 10 Gigabit Ethernet Switches
A 10 Gigabit ethernet switch refers to a device capable of delivering more than 10 gigabits of throughput in one second.
1. Introduction to 10 Gigabit Switches
The emergence of 10 Gigabit switches has completely realized the integration of private networks into public networks. As the latest Ethernet technology compatible with the past, 10 Gigabit Ethernet is not only a "high-speed copy" of Ethernet, it is the first time that 10 Gigabit Ethernet proposes the 10 Gigabit wide-area Ethernet technology, which is the first time to realize the private network to Convergence of public networks.
Similarly, as the core equipment of the network, the 10 Gigabit Ethernet switch not only supports 10 Gigabit access modules on the existing Gigabit Ethernet switches, but also requires a new generation of system design, including switch architecture, two / Layer 3 technology updates to next-generation IPv6 with default support and efficient bandwidth management.
In recent years, from local area network to metropolitan area network, from metropolitan area network to wide area network, Ethernet technology is occupying more and more markets at an amazing speed, especially in enterprise networks and operator networks, Ethernet technology is becoming more and more Many places have become the undisputed choice. From Fast Ethernet to Gigabit Ethernet to 10 Gigabit Ethernet, technological updates have met the needs of high-speed bandwidth growth and new-generation applications brought about by new-generation Internet technologies. Let's take a look at the next-generation technology in 10 Gigabit Ethernet switches.
10 Gigabit Ethernet technology provides more update functions, greatly improves QoS, and is quite revolutionary. Therefore, it can better meet the needs of network security, service quality, link protection and other aspects. The main purpose of network construction in the Internet cafe industry is to build the performance, bandwidth and main network services of the Internet cafe network into a "use advanced, mature, reliable, stable and secure network and technology to build a high-bandwidth, high-speed network. Reliable and manageable information foundation.
The continuous improvement of 10 Gigabit Ethernet technology meets the growing needs of users, and 10 Gigabit Ethernet technology has been continuously improved in the development process, such as physical media from thick coaxial cable to thin coaxial cable, twisted pair, optical fiber The expansion of network functions from shared Ethernet to full-duplex and switched Ethernet, and the improvement of transmission rates from 10MB to 100MB, 1000MB, 10GB and even 100GB, greatly meet the needs of users for various applications.
2. Features of 10 Gigabit switches
2.1 10 Gigabit ports
There are two types of 10 Gigabit ports: the first one is the port expansion type. This type requires an expansion board to be inserted into the switch expansion port. This type increases the cost of the switch. You can choose a 2-port or 4-port type according to your needs. Due to the update of technology, the latest 10 Gigabit port is the switch itself with 24, 44, 42, 48 independent 10 Gigabit ports.
Powerful forwarding performance Aiming at the non-blocking requirements of large-traffic data in backbone and core networks, RHS6226ST/TS provides up to 128Gbps switching capacity, full line-speed filtering and forwarding 96Mpps; RHS6252TS/ST provides up to 176Gbps switching capacity, full line-speed filtering and forwarding 131Mpps, ensuring core Data on the backbone network is forwarded without blocking.
2.2 Powerful and complete security control strategy
The series supports port-based user IP+MAC address authentication, MAC address filtering, ARP filtering, CPU protection, port-based 802.1X authentication, remote RADIUS, TACACS+ authentication, port-based maximum host limit, and port-based user IP +MAC+VLAN ID +Multiple binding of user accounts, at the same time, hardware supports IP ACL, MAC ACL, Vlan ACL, and ACL functions based on Layer 3 and Layer 4, effectively defending against ARP attacks and viruses, providing security control efficiency, and ensuring network security The strategy works in real time.
2.3 Multiple Routing Protocols
Supports multiple routing protocols, such as static routing; supports RIP v1/v2, OSPF v2, BGP v4 and other dynamic routing protocols; supports PIM-SM, PIM-DM, DVMRP and other multicast routing protocols. Fully meet the needs of large networks to build networks with different routing protocols.
2.4 Diversity management
The series supports rich network management methods, such as console port management, WEB management, and TELNET remote management, making device management more convenient, and supporting SSH encryption, making management more secure.
2.5 Fully support IPv6
Hardware-based IPv6 wire-speed processing performance; fully supports various IPv6 protocol technologies, including IPv6 static routing, dynamic routing protocols such as BGP4+, RIPng, OSPFv3, as well as IPv4/IPv6 dual protocol stacks, manual configuration tunnels, automatic configuration tunnels, 6to4 tunnels It has passed the "IPv6 Ready" gold certification of the Global IPv6 Forum.
2.6 New energy-saving design, leading low-carbon communication
Complying with IEEE 802.3az (Energy Efficient Ethernet), it provides idle mode with low power consumption of the port, adjusts the output power according to the length of the cable, and supports the port hibernation when there is no connection, which greatly reduces the power consumption.
3. The difference between 10 Gigabit switches and Gigabit switches
3.1 Different rates
Gigabit switches support up to 1000Mbps, and 10 Gigabit switches support up to 100G, so the transmission rate of 10 Gigabit switches is faster than that of Gigabit switches.
3.2 Different power consumption
The power consumption of 10 Gigabit switches is greater than that of Gigabit switches, so in terms of energy saving, Gigabit switches will be better.
3.3 Different functions
Gigabit switches generally have two layers, and 10 Gigabit switches generally have two or three layers. Therefore, 10 Gigabit switches organically combine the simplicity and flexibility of Layer 2 with the stability, scalability and high performance of Layer 3. The 10 Gigabit switch is an upgraded version of the Gigabit switch, so the function of the 10 Gigabit switch is more complete than that of the Gigabit switch.
3.4 Different backplane bandwidth and packet forwarding rate
The backplane bandwidth and packet forwarding rate of 10 Gigabit switches are higher than those of Gigabit switches, so they are more capable of large-scale networking needs. The core layer generally uses 10 Gigabit switches.
3.5 10 Gigabit Switches
3.5.1 10 Gigabit Switches
The emergence of 10 Gigabit switches has completely realized the integration of private networks into public networks, and it can provide a throughput of more than 10 Gbits per second, which traditional switches cannot do. As the latest Ethernet technology compatible with the past, 10 Gigabit Ethernet is not only a "high-speed copy" of Ethernet, it is the first time that 10 Gigabit Ethernet proposes the 10 Gigabit wide-area Ethernet technology, which is the first time to realize the private network to Convergence of public networks.
3.5.2 Gigabit Switch
A Gigabit switch refers to a switch whose uplink and downlink ports are both Gigabit ports, and can also be understood as a switch port that supports 1000M or 10/100/1000M transmission. Many people are looking for faster LAN connection technology, using Gigabit Ethernet or the faster 10 Gigabit technology. This change is happening not only in the backbone of the campus network, but also in every wiring closet, and enterprise IT managers hope to provide each desktop user with 10 times the previous network connection.
4. The switching system of the 10 Gigabit switch
Users invest in 10 Gigabit Ethernet switches because they need to be able to process packet forwarding at wire speed under any circumstances, and they need to be able to handle new-generation Internet applications, such as multicast applications, streaming media applications, IP voice, and next-generation Internet IPv6 At the same time, the switch also requires the switch to provide the best investment protection, to occupy the least rack space, to save power as much as possible, to be able to see the user's traffic, etc.
Obviously, gigabit switches cannot accommodate wire-speed forwarding of large-capacity 10-gigabit ports. The current gigabit switches can only provide a throughput of tens to hundreds of gigabits, while the new generation of 10-gigabit switches can provide a throughput of 1,000 gigabits per second. throughput of more than G. Because such a large data throughput cannot achieve wire-speed forwarding even with the highest CPU, we need a dedicated network integrated circuit chip (ASIC), and at the same time, the task of data forwarding needs to be distributed to each module. Distributed systems have different implementations. One is to transfer common tasks to local modules in traditional switch technology. It can use the local switching matrix or the switching matrix of the entire switch, but this approach Obviously not optimal; an alternative would be to thoroughly distribute all data forwarding tasks across modules and utilize a local high-capacity switch fabric. Therefore, the large-capacity distributed switching structure is the most effective. The 10 Gigabit switch should not only provide a large-capacity backplane switching matrix, but also a large-capacity local switching matrix. The non-blocking parallel switching matrix is ??the most advanced technology at present.