A 100G Ethernet card is a network interface controller that can transmit Ethernet frames at a rate of 100Gbps. It can be used to connect servers, switches, routers and other network devices to build a high-speed, high-performance, and highly reliable network architecture. Different network architectures may use different topology diagrams to organize the connection relationships between network devices, such as star topology, ring topology, bus topology, tree topology, mesh topology, etc.
Different topology diagrams have their own advantages and disadvantages, and you need to select an appropriate topology diagram based on actual network requirements and scenarios.
The following is the topology diagram of 100G Ethernet cards in the entire network architecture and some actual data on related roles:
- One example is the introduction of a data center network architecture based on 100G Ethernet cards and switches, using a Fat-Tree topology diagram to divide servers and switches into three layers: core layer, aggregation layer and edge layer. Each server is connected to the edge switch via a 100G Ethernet card.
- Each edge switch connects to two aggregation switches via four 100G Ethernet ports. Each aggregation switch is connected to two core switches through four 100G Ethernet ports. The architecture delivers up to 6.4Tbps of bidirectional bandwidth and end-to-end latency as low as 2.5 microseconds.
- Another example is the introduction of a high-performance computing (HPC) network architecture based on 100G Ethernet cards and optical fiber cables, using the Dragonfly topology map to divide computing nodes and routers into four layers: local layer, cluster group layer, global layer and terminal layer. Each compute node is connected to a local router via a 100G Ethernet card. Each local router is connected to other local routers or group routers through multiple 100G optical cables. Each group router is connected to other groups through multiple 100G optical cables.
Group routers or global routers, each global router is connected to other global routers or terminal routers through multiple 100G optical cables. The architecture delivers up to 1.6Pbps of cluster bandwidth and end-to-end latency as low as 3.5 microseconds.
- Another example is the storage network architecture based on 100G Ethernet cards and RDMA technology, which uses a star topology to connect storage servers and clients through core switches. Each storage server is connected to the core switch through an RDMA-capable 100G Ethernet card, and each client is connected to the core switch through an RDMA-capable 100G Ethernet card or 40G Ethernet card. The architecture delivers up to 96.28Gbps of single-sided RDMA read and write bandwidth and hardware end-to-end latency as low as 4 microseconds.
- Another example is the introduction of a Network Function Virtualization (NFV) architecture based on 100G Ethernet cards and P4 programmable technology, which uses a mesh topology map to combine multiple network functions (such as firewalls, load balancers, network address translators, etc. ). . ) are deployed on different servers and connected to P4 programmable switches through P4 programmable 100G Ethernet cards. The architecture delivers up to 100Gbps of network function processing power and end-to-end latency as low as 10 microseconds.
- The last example is the introduction of a mobile network architecture based on 100G Ethernet cards and wireless technology, using a tree topology to connect multiple base stations and core networks through wireless access controllers (WACs). Each base station is connected to the WAC through a 100G Ethernet card, and each WAC is connected to the core network through a 100G Ethernet card. The architecture provides wireless access capabilities of up to 100Gbps and end-to-end latency as low as 20 microseconds.
If you want to know the main differences and considerations between different network topology diagrams, I can provide you with some simple instructions:
• A star topology is a topology that connects all network devices through a central node (such as a switch or router). Its advantages are simplicity, ease of management, and high reliability. Its disadvantage is the performance and bandwidth of the central node. It will limit the performance and bandwidth of the entire network. If the central node fails, the entire network will be paralyzed. When choosing a star topology, you need to pay attention to selecting the appropriate central node to meet the needs of the network and your budget.
• The ring topology is a topology that connects all network devices through a closed loop. Its advantages are simplicity, balance, and cable saving. The disadvantage is that each node will affect the transmission speed and delay of the network. If If one node fails, the entire network will be disrupted. When selecting a ring topology, you need to pay attention to selecting appropriate transmission media and protocols to improve the efficiency and fault tolerance of the network.
• The bus topology is a topology that connects all network devices through a backbone cable. Its advantages are simplicity, cable saving, and easy expansion. The disadvantage is that the performance and bandwidth of the network will decrease as the number of nodes increases. Reduced, if the backbone cable fails or the terminals are not terminated properly, the entire network can be affected. When selecting a bus topology diagram, you need to pay attention to selecting appropriate backbone cables and terminators to ensure the stability and reliability of the network.
• A tree topology is a topology that connects multiple star topologies through a root node. Its advantages are clear structure, easy management, and high reliability. Its disadvantages are the performance and bandwidth of the root node and upper nodes. It will affect the performance and bandwidth of the entire network. If the root node or upper node fails, the lower node will lose connectivity. When choosing a tree topology, you need to pay attention to selecting appropriate root nodes and upper nodes to support the scale and needs of the network.
• Mesh topology is a topology that connects all network devices through multiple paths. Its advantages are flexibility, efficiency, and high reliability, but its disadvantages are complexity, difficulty in management, and high cost. When choosing a mesh topology, you need to pay attention to selecting the appropriate number and length of paths to balance network performance and cost.
In conclusion, 100G Ethernet cards play a vital role in shaping network topologies, ensuring high-speed data transmission and meeting the demands of modern networking. Understanding the differences among network topologies and their respective roles can help organizations make informed decisions about their network infrastructure.
