Configure Ethernet Interfaces

Ethernet was developed in the early 1970s at the Xerox Palo Alto Research Center as a data-link control layer protocol for interconnecting computers. It was first widely used at 10 Mbps over coaxial cables and later over unshielded twisted pairs using 10BaseT. More recently, 100BaseTX (Fast Ethernet, 100 Mbps), Gigabit Ethernet (1 Gbps), and 10-Gigabit Ethernet (10 Gbps) have become available.

Juniper Networks routers support the following types of Ethernet interfaces:

• Fast Ethernet
• Gigabit Ethernet
• Gigabit Ethernet Q Performance Processor (QPP)
• 10-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 Engine
• Aggregated Ethernet interface, a logical linkage of Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet physical connections

This chapter discusses the following topics specific to configuring the different types of Ethernet interfaces in the router:

• Configure Ethernet Physical Interface Properties
• Configure 802.1Q VLANs
• Configure TCC and Layer 2.5 Switching
• Configure Static ARP Table Entries
• Configure VRRP
• Configure the Management Ethernet Interface
• Configure the Internal Ethernet Interface
• Configure Aggregated Ethernet Interfaces

For examples of Ethernet interface configuration, see the following sections:

• Example: Configure Fast Ethernet Interfaces
• Example: Configure Gigabit Ethernet Interfaces
• Example: Configure Aggregated Ethernet Interfaces