Advanced CLOS+ multilevel multiplane switching architecture
* Using advanced CLOS/CLOS+ multilevel and multi-plane orthogonal switching architecture, the business board and the switching network board adopt complete orthogonal design (90 degrees), providing continuous bandwidth upgrade capability.
* Adopts a design without backplane or midplate to improve ventilation and heat dissipation.
* Supports high-density 40GE and 100GE Ethernet ports, meeting data center applications and future development requirements.
* Independent switch network board. The control engine and switch network board hardware are independent from each other, which improves the reliability of the device to the greatest extent and ensures the continuous bandwidth upgrade of subsequent products.
* Dynamic variable cell sharding strictly non-blocking exchange, improve the overall forwarding performance.
Application requirements for cloud computing data centers
* TRILL/SPB: With the increase in the size of servers and switches, data center networks tend to adopt flat network architecture for easy maintenance and management, which requires the construction of a large layer 2 network. The S12500 series supports the TRILL or SPB technology to build a large layer 2 network in a data center. TRILL (Transparent Interconnection of Lots of Links), SPB (Shortest Path Bridging, The shortest path bridging protocol combines the simplicity and flexibility of Layer 2 with the stability, scalability, and performance of Layer 3. It can provide a higher density of ports and a flatter network architecture, meeting the access requirements of large-scale servers in data centers.
* The S12500 series supports Virtual eXtensible LAN (Extensible Virtual Local Area Network) technology, which is the Layer 2 VPN technology based on IP networks and uses MAC in UDP encapsulation. Based on the existing service provider or enterprise IP network, the VXLAN can provide Layer 2 interconnection for scattered physical sites and isolate services for different tenants.
* The S12500 series supports Ethernet Virtual Private networks (EVPN). EVPN is a layer 2 VPN technology. The control plane uses MP-BGP to advertise EVPN routing information. The data plane supports VXLAN encapsulation to forward packets.
* S12500 supports the Ethernet Virtual Interconnection (EVI) technology, which is an advanced "MAC in IP" technology. The EVI solution is simple to deploy and is based on the existing IP network. Provides flexible Layer 2 interconnection for scattered physical sites.
* S12500 series supports Fibre Channel (FC) and Fibre Channel over Ethernet (FCoE) technologies. The FCoE technology is mainly used to solve the heterogeneous LAN network and FC storage network of cloud computing data centers. The deployment of FCoE and CEE technologies can realize the integration of front-end network and back-end network architecture of data centers, and solve the technical problem of data, computing, and storage network separation, which greatly reduces the procurement and expansion costs of data centers
* The S12500 series supports large-capacity ARP/ND, MAC, and ACL entries, meeting the flat networking requirements of large-scale data centers.
* 10GE, 40GE, and 100GE SPUs all support three-layer linear forwarding and cross-board full-speed linear forwarding.
Innovative multi-engine control design
* Adopted innovative hardware design, through independent control engine, detection engine, maintenance engine to provide powerful control capabilities and 50ms of high reliability guarantee for the system.
* Independent control engine, providing a powerful main control CPU system, easy to process a variety of protocol messages and control messages, and support protocol message fine control, to provide the system with perfect anti-protocol message attack capability;
* An independent Detection engine, it provides a highly reliable and high-performance Fast Fault Detection and Restoration (FFDR) system for fast fault detection, such as BFD and OAM. Interworking with the protocols of the control plane, it supports fast protection switching and fast convergence. It can detect faults within 50ms to ensure service continuity.
* Independent Maintenance engine, intelligent Embedded maintenance subsystem-Embedded Maintenance Subsystem (EMS) CPU system. The CPU system supports intelligent power management and sequential power-on and power-off of boards (reduces power impact caused by simultaneous power-on of boards and improves device service life). Reduce electromagnetic radiation, reduce system power consumption), equipment online status check.
* Launched the first integrated X86 architecture cloud main control, support 256G SSD, Intel Xeon E5 8-core processor, 64G memory; Support running SDN controller /Director/ third-party software to implement Overlay & Underlay dual plane management and control in data centers. Linux and Windows operating systems, VM and NFV functions, and interconnection with Openstack and third-party cloud platforms are supported.
* An independent monitoring engine, built into the main control board and separated from the service control plane, monitors the operating status of device hardware in real time, including load and power adjustment, automatic fan speed adjustment, and dynamic power consumption allocation.
Data center level reliability
* The S12500 series provides a dedicated FFDR system for fast fault detection, such as BFD and OAM. It interworks with the protocols of the control plane to support fast protection switching and fast convergence.
* Supports BFD for VRRP/BGP/IS-IS/RIP/OSPF/RSVP/ static route.
* NSR/GR for OSFP/BGP/IS-IS/RSVP IS supported.
* The hardware of the control engine and the switching network board are independent to realize the physical separation of the control plane and the forwarding plane and 1+1 redundancy of the control engine; Switch board N+M redundancy; Fan system redundancy design; N+M redundancy for power modules. Maximize the system fault isolation capability and reliability.
Highly available M-LAG architecture
S12500 series switches support the Multichassis Link Aggregation Group (M-LAG) cross-device link aggregation technology (the original DRNI technology). By virtualizing two physical devices into one device at the forwarding layer, the cross-device link aggregation is realized and the control layer is independent. This improves board level reliability to device level reliability.
• M-LAG decouples the control plane from the data plane so that devices on each node can be upgraded independently, ensuring zero service interruption.
• Active-active access provides device-level redundancy protection and traffic load balancing while improving system reliability.
• Applies to overlay and traditional underlay scenarios, and the networking is flexible.
Multi-level security protection
* Multi-level protection and security of the control plane. The control plane policy feature of the S12500 manages the packet flow from the data plane (DP) to the control plane (CP) by configuring QoS filtering and rate limiting. This ensures that the S12500 switch can identify and protect important packets and discard invalid packets when attacked by DDoS. Ensure that the control plane maintains normal forwarding and protocol status under attack or heavy traffic.
* Supports massive ACL rules and supports full-speed forwarding. You can perform detailed access control on L2, IPv4, IPv6, and MPLS packets and their field combinations.
* Support hardware level encryption Macsec technology (802.1ae), different from the traditional end-to-end basic application layer protection of soft encryption technology, Macsec by authenticating data source cryptography to protect the management of the bridge network and other data control protocols, protect information integrity and provide reprotection and security services. By confirming the frames sent by this station, the Layer 2 protocol can be protected from attack.
Distributed cache mechanism and refined QoS
* To face the next generation data center burst traffic, the innovative use of "distributed entry cache" technology. Each port can accurately allocate bandwidth and shape traffic for all service flows that flow to the port. The accurate scheduling of the forwarding plane ensures that the Ingress distributed cache is supported, and the cache space distributed on each line card is effectively shared and utilized, providing better caching effect.
* The network application model has been transformed from C/S to B/S model. The transformation of application mode leads to the increase of network burst traffic, and the large cache mechanism has become an urgent demand of network devices. The S12500 supports 200ms burst traffic per 10 gigabit port. Combined with the distributed inlet caching mechanism, the S12500 meets the high burst traffic requirements of large data centers.
* Support 4GB cache for single chip and up to 32GB cache for cable card.
* Each board has a maximum of 96 KB hardware queue, supports refined QoS and traffic management, and allocates different priorities and queues to different users and traffic flows based on requirements, ensuring different bandwidth, service delay, and jitter performance.
Comprehensive maintenance inspection mechanism
* Online status detection mechanism, through the dedicated maintenance engine, can realize the equipment switching network board, backplane communication channel, service communication channel, key chips, memory, etc. If a module is faulty, the fault is reported to the EMS.
* Board isolation: Isolates a board from the forwarding plane and does not participate in forwarding on the forwarding plane. However, the isolated board is still on the control plane and can be managed. You can perform real-time diagnosis and CPLD upgrade on the board without affecting system services.
* Support for Ethernet OAM, providing multiple device-level and network-level fault detection means.
Open application architecture
* S12500 series products are designed based on the concept of OAA (Open Application Architecture), and innovatively launched an open business platform.
* Supports network security multi-service card modules, and integrates firewall modules, IPS modules, ACG application control gateway modules, and LB load balancing modules. Through the integration of products to achieve network security integration solutions.
Green environmental protection design
* The intelligent EMS engine provides intelligent power management for the S12500 series. The S12500 series supports sequential power on of boards (reducing the power impact caused by simultaneous power on of boards, increasing the service life of the device, and reducing electromagnetic radiation), controlling board power-off, isolating faulty or idle boards, and reducing system power consumption.
* S12500 series fans adopt high efficiency PWM fan to support stepless speed regulation. The system automatically collects the temperature of the board, calculates the fan speed control curve based on the actual device condition, and sends the fan speed control command to the fan frame. The system supports fan status monitoring (speed monitoring, fault alarm). Automatic zone speed control based on the ambient temperature and board configuration reduces power consumption and running noise, effectively reduces ambient noise, and prolongs the service life of fans.
* The S12500 series automatically detects internal ports. When a slot is not configured with an interface board or a port is not connected to a cable, the system automatically closes the internal port, saving power consumption.
* The minimum power consumption of a 10G port is less than 3.4W, that of a 40G port is less than 10.4W, that of a 100G port is less than 13.8W, and that of a 400G port is less than 20.3W.
* S12500 series products meet the EU RoHS standards for environmental protection and safety of materials.
* S12500 series products adopt front and rear straight ventilation, strict front and rear air duct design, high ventilation and heat dissipation efficiency, energy saving and environmental protection, can meet the requirements of high efficiency heat dissipation and energy consumption in data center room.
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Omnidirectional virtualization capability
IRF2 (Intelligent Resilient Framework2, the second generation of Intelligent Resilient Framework)
S12500 series products support IRF2 technology, and can convert up to 4 high-end devices into one logical device, which has strong advantages in reliability, distribution and easy management. Supports ultra-long distance IRF2 across transmission wavelength division devices, meeting the design requirements of the active-active backup scheme for remote data centers.
Reliability: Through hot backup technology, all information on the control plane and data plane is redundantly backed up and data is forwarded without interruption in the entire virtual architecture, which greatly enhances the reliability and performance of the virtual architecture, eliminates the single point of failure and avoids service interruption.
Distribution: The cross-device link aggregation technology implements load balancing and mutual backup of multiple uplink links, thus improving the redundancy of the entire network architecture and the utilization of link resources.
Manageability: The entire elastic architecture uses the same IP address to manage network devices, simplify network topology management, improve operation efficiency, and reduce maintenance costs.
MDC (Multitenant Devices Context)
The S12500 series uses the MDC technology to implement 1: N virtualization capabilities, that is, one physical switch can be virtualized into N logical switches, and a maximum of 16 logical switches can be virtualized, meeting the requirement that multiple customers share core switches. By dividing ports on a single board into different MDCS, you can fully utilize the core switch capabilities, reduce the investment cost, and isolate services using the MDC technology.
IRF3.1 (Intelligent Resilient Framework3.1, the third generation of Intelligent Resilient Framework)
The S12500 series supports heterogeneous virtualization in the vertical dimension. The core and access devices are formed into a vertical logical virtual device using IRF3.1 technology, which is equivalent to adding a cartridge device as a remote interface board to the main device system to expand I/O port capabilities and achieve centralized control and management. IRF3.1 technology can simplify management, greatly reduce the network management node; Simplified wiring, two layer into a layer, save transverse connection cable; Finally, the data forwarding plane virtualization is realized to simplify service deployment and automatic orchestration.
EVB (Edge Virtual Bridging)
The S12500 series supports Edge Virtual Bridging (EVB) and Virtual Et (VEPA)
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