router may use the encryptor mechanism in VPN implementation or other conditions to ensure security. A router uses a CPU to execute software algorithms, which usually affects forwarding efficiency. Some routers adopt hardware encryption to improve forwarding efficiency.
Router function indicator: MPLS
MPLS technology is described in the router technology above. In addition to label switching,
transmission network that is interconnected by multiple manufacturers. In addition to dynamic control over Ethernet private line services, SUPPERCOMM05 also includes transmitting Ethernet virtual services through optical transmission networks. The client network can use the UNI2.0 signaling interface to control a 1-bit Ethernet Access link to dynamically request connections from the carrier network.
2. IETFGMPLSUNI
Because a large number of SCNET/SDH-based network structures are installed, oper
offices, international regions, remote computers, roaming mobile users, and business partners due to business requirements, or the network structure is changed, enterprises can expand their VPN capacity and coverage at any time by relying on the ISP that provides the VPN service.
VPN has an absolute price advantage over the leased line. Compared with ordinary PSTN dial-up connections, VPN is superior in terms of security and confidentiality. The Traditional VPN is basically built on Frame Rel
At present, telecom enterprises are seeking to integrate IP and optical network technology, in order to develop efficient advanced business. The first thing to overcome is the high complexity of IP services that are designed to support voice and fixed-circuit multi-tier architectures, resulting in the need for a control plane that extends from Layer 3 IP to layer 1.
The goal of the GMPLS (Universal Multiprotocol Label Switching) technology is to cater to this need, and to extend the intelligenc
technology below the IP network layer, that is, the WAN technology mentioned above. In general, the topology of the core network is basically a large ring structure with a self-healing function, and the specific encapsulation can adopt various technologies, but almost no direct IP address encapsulation, because IP exchange is not a real exchange, it requires additional computing in it. These additional computing is routing search and address resolution. The core network exchange is basically a
other is the reliability of the network layer.
Network reliability is an important part of man router reliability assurance. Due to the slow convergence of traditional router protocols (IGP in seconds and BGP in minutes), it cannot meet the requirements for carrying real-time services. Network reliability is also an active area in the new technology of man routers.
Currently, the new network-layer reliability technologies mainly include fast convergence of IP routes, end-to-end LSP backup,
other is the reliability of the network layer. Network reliability is an important part of man router reliability assurance. Due to the slow convergence of traditional router protocols, IGP is in seconds and BGP is in minutes. Network reliability is also an active area in the new technology of man routers.
Currently, the new network-layer reliability technologies mainly include fast convergence of IP routes, end-to-end LSP backup, MPLS fast re-routin
Differences between hybrid WAN and SD-WAN, wansd-wan differences
The concepts of hybrid WAN and SD-WAN are often misused, and some people think they can replace each other. Hybrid WAN is a way of routing traffic across multiple connection paths, software-defined WAN (SD-WAN) Simplifies WAN management by centrally managing and providing business policy orchestration and security. These two methods have evolved into an important technology that supports the changing network needs of the cloud era
Different hybrid WAN and SD-WAN in cloud computing networks, hybrid wansd-wan
The term hybrid WAN (WAN) and software-defined WAN (SD-WAN) are often incorrectly considered interchangeable. Hybrid Wan is a practice of routing traffic on multiple connection paths, while software-defined Wan (SD-WAN) Simplifies the management of hybrid Wan by centrally managing and providing business policy processes and security. These two methods have evolved to support the ever-changing network needs of the clou
priorities to different services, and assign different network resources to services with different priorities. Therefore, ATM provides QoS guarantees for real-time services such as conversational sounds and images. Although ATM has the advantages of fast switching speed, traffic control, service quality assurance, and flexible bandwidth allocation, the overhead and Protocol complexity of ATM make the cost of ATM equipment high, complex maintenance.
Multi-Protocol Label exchange Multi-Protocol
and allowing routers to forward datagrams based on fixed-length labels (rather than destination IP addresses), without abandoning the infrastructure based on destination IP datagram forwarding, for technologies based on fixed-length tags and virtual circuits.MPLS packets can only be sent between MPLS enabled routers because the first part of MPLS is between the link layer and the network layer header, whic
Operators are seeking to improve service efficiency and develop advanced services through the integration of IP and optical network technologies. First, however, they need to overcome the extremely complex multi-tier architecture. That is, the IP from the third layer extends to the first layer of the optical transport layer.
Universal Multiprotocol Tag Switching (GMPLS) is designed to meet the above needs, using the same method: Under the unified control plane, let the network intelligence exte
of enterprises.
The reliability of metropolitan area Network router is embodied in the following two aspects, one is the reliability of the equipment layer, the other is the reliability of the network layer.
The network reliability is an important content of the reliability guarantee of metropolitan area Network router, because the traditional router protocol converges slowly (IGP in the second level, BGP in the minute level), can not meet the demand of carrying real time service. Network rel
of transmission products and provides interfaces such as Ethernet over SDH and CWDM. Therefore, R8000 can use a single device to implement the functions of multiple devices, maximizing the cost of network construction and maintenance for operators. R8000 adopts the network processor-based distributed forwarding architecture and has fully programmable capabilities. It can implement flexible service generation and customization functions and provide network address translation (NAT), access contr
At present, telecom enterprises are seeking to integrate IP and optical fiber networks to develop efficient advanced services. What needs to be overcome First is the high complexity brought by IP services designed to support multi-layer voice and fixed circuit architectures, the final result is to obtain a control plane that extends the IP address of Layer 3 to the optical transport Layer of Layer 1.GMPLS universal Multi-Protocol Label exchange) the goal of this technology is to meet this demand
network function virtualization) as software. and orchestration system running on the software (so become network function virtualization), orchestration System for users and enterprise users to orchestrate network functions and network traffic, dynamic service for all types of users to achieve a variety of users and providers of various strategies. This shift in the central Office allows service providers to quickly build, deploy, and deliver new services, while significantly reducing costs an
limitations of the single box, capacity can be smooth expansion on demand.
Reliability: This includes network reliability and device reliability. Network reliability depends on the physical network supported by routers, and the network has the reliability of telecommunication class for sdh/sonet and other traditional technologies. For long-distance Ethernet, there are some new technologies, such as optical Ethernet and 802.17 RPR (resilient Packet ring), But because RPR has not yet formed the
By integrating IP and optical network technologies, we strive to improve service efficiency and develop advanced services. However, first they need to overcome extremely complex multi-layer architecture. That is, the IP address on the third layer is extended to the optical transport layer on the first layer.The general Multi-Protocol Label exchange GMPLS is designed to meet the above requirements. The approach adopted is to extend the network intelligence to the network edge through the network
Communications Service Providers (CSPs), including operators, managed service providers and cable operators, now face the challenge of securing service revenue and profits in commercial broadband, such as high-speed, inexpensive Internet services. The software-defined wide area network (Sd-wan) solution seems to be a great antidote for communication service providers to improve the value of managed services for users.CSPs has about $40 billion a year in profits from WAN services, including
today, it feels convenient, Duang,duang.Think about it, why does R3 produce a routed black hole? Not because I can't go to 1.1.1.1 and 5.5.5.5, but my next-door brother R2,r4 know, is there a way to let me just drop the bag to my next-door router?That's MPLS!!! The MPLS label belongs to the 2.5 layer, we can only check the label, do not Anza, so that will not be lost packets. As long as the
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