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Several interfaces of the core switch

Core switches typically feature high-speed, high-density interfaces ranging from 10G to 400G+, including modular or stackable ports, uplinks, and support for link aggregation.Port Types and Speeds

Core switches are designed to handle massive traffic volumes and provide ultra-low latency. They commonly include:

  • 10G, 25G, 40G, 100G, and 400G Ethernet ports for high-speed connectivity between distribution switches and other core devices .
  • SFP, SFP+, QSFP+, and QSFP28 modules to support fiber or copper connections, allowing flexible deployment in data centers or campus networks .
  • Stacking ports for connecting multiple switches into a single logical unit, enhancing scalability and redundancy .
Uplinks and Aggregation

Core switches often provide uplink ports to connect to aggregation or distribution layers. They support:

  • Link Aggregation (LAG) to combine multiple physical links into a single logical link, increasing bandwidth and providing redundancy .
  • High-capacity uplinks to ensure non-blocking, full-duplex data transfer across the network backbone .
Modularity and Redundancy

Many core switches feature modular chassis designs or hot-swappable line cards, allowing network administrators to:

  • Upgrade port types or speeds without downtime.
  • Add additional modules to increase port density as network demands grow .
  • Utilize dual power supplies and redundant components to maintain continuous operation .
Advanced Features

Core switch interfaces are often integrated with advanced Layer 3 capabilities, including:

  • IP routing between VLANs, subnets, and security zones.
  • Support for HSRP/VRRP for high availability.
  • Large buffers to handle bursty traffic and reduce packet loss in high-demand environments . In summary, core switch interfaces are high-speed, flexible, and scalable, designed to aggregate traffic from multiple distribution switches while ensuring reliability, redundancy, and future-proof expansion for enterprise or data center networks .
Several interfaces of the core switch

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This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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