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Ethernet Interfaces Overview

SUMMARY Learn about different types of Ethernet interfaces on routers, the naming conventions and how to monitor the interfaces.

Ethernet interfaces are networking interfaces that provide traffic connectivity. You can configure physical interfaces and logical interfaces on your device. You can adjust the Interface's speed and limit the rate of incoming traffic on Fast-Ethernet ports. You can also configure the Interface to operate in full-duplex or half-duplex mode, and set up MAC address validation. Other basic configurations are also available.

Figure 1: Ethernet Interfaces Ethernet Interfaces

Juniper Supported Ethernet Interfaces

Juniper Networks routers support the following types of Ethernet interfaces:

  • Fast Ethernet

  • Tri-Rate Ethernet copper

  • Gigabit Ethernet

  • Gigabit Ethernet intelligent queuing (IQ)

  • Gigabit Ethernet IQ2 and IQ2-E

  • 10-Gigabit Ethernet IQ2 and IQ2-E

  • 10-Gigabit Ethernet

  • 10-Gigabit Ethernet dense wavelength-division multiplexing (DWDM)

  • 25-Gigabit Ethernet

  • 40-Gigabit Ethernet

  • 100-Gigabit Ethernet

  • 200-Gigabit Ethernet

  • 400-Gigabit Ethernet

  • 800-Gigabit Ethernet

  • Management Ethernet interface, which is an out-of-band management interface within the router

  • Internal Ethernet interface, which connects the Routing Engine to the packet forwarding components

  • Aggregated Ethernet interface, a logical linkage of Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet physical connections

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