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Configuring Ethernet interfaces
•A switch operating in standard mode does not support Layer 3 Ethernet interfaces, Layer 3 Ethernet
subinterfaces, Layer 3 aggregate interfaces, or Layer 3 aggregate subinterfaces. For more
information about the system operating mode commands, see Fundamentals Command Reference.
•When enhanced IRF is enabled on a switch operating in IRF mode, you cannot create Layer 3
Ethernet interfaces, Layer 3 Ethernet subinterfaces, Layer 3 aggregate interfaces, or Layer 3
aggregate subinterfaces on the switch. For more information about IRF, see IRF Configuration
Guide.
Ethernet interface types
Your device supports the following types of Ethernet interfaces:
•Layer 2 Ethernet interfaces—Physical Ethernet interfaces operating at the data link layer (Layer 2)
to switch traffic.
•Layer 3 Ethernet interfaces—Physical Ethernet interfaces operating at the network layer (Layer 3) to
route traffic. You can assign an IP address to a Layer 3 Ethernet interface.
•Layer 3 Ethernet subinterfaces—Logical interfaces operating at the network layer. You can assign
an IP address to a Layer 3 Ethernet subinterface. By creating subinterfaces on a Layer 3 Ethernet
interface, you enable the interface to carry packets for multiple VLANs.
Configuring common Ethernet interface settings
IMPORTANT:
By default, Ethernet interfaces, VLAN-interfaces, and a
re
ate interfaces are down. To confi
ure these
interfaces, first bring up these interfaces by using the undo shutdown command.
This section describes the settings common to Layer 2 Ethernet interfaces and Layer 3 Ethernet interfaces
or subinterfaces. For more information about the settings specific to Layer 2 Ethernet interfaces and Layer
3 Ethernet interfaces or subinterfaces, see "Configuring a Layer 2 Ethernet interface"and "Configuring
a Layer 3 Ethernet interface or subinterface."
Configuring the operating mode and related parameters for a
10-GE interface
Configuring the operating mode
Some 10-GE interfaces support the following operating modes:
•LAN mode—In LAN mode, the 10-GE interface transmits Ethernet packets, and you must install a
copper transceiver module to the interface to provide Ethernet network access.
•WAN mode—In WAN mode, the 10-GE interface transmits SDH frames, and you must install a
fiber transceiver module to the interface to provide SDH network access. In this mode, the interface
supports only point-to-point connections.
