Technical Documentation

Configuring an Aggregated Ethernet Interface

On Fast Ethernet, Tri-Rate Ethernet copper, Gigabit Ethernet, and 10-Gigabit Ethernet interfaces on M Series and T Series routers, you can associate a physical interface with an aggregated Ethernet interface.

To configure an aggregated Ethernet interface:

  1. Specify that you want to configure the link aggregation group interface.
    user@host# edit interfaces interface-name
  2. Configure the aggregated Ethernet interface.
    [edit interfaces interface-name]user@host# set (fastether-options | gigether-options) 802.3ad aex

You specify the interface instance number x to complete the link association; x can be from 0 through 127, for a total of 128 aggregated interfaces. You must also include a statement defining aex at the [edit interfaces] hierarchy level. You can optionally specify other physical properties that apply specifically to the aggregated Ethernet interfaces; for details, see Ethernet Interfaces Overview, and for a sample configuration, see Example: Configuring Aggregated Ethernet Interfaces.

Note: In general, aggregated Ethernet bundles support the features available on all supported interfaces that can become a member link within the bundle. As an exception, Gigabit Ethernet IQ features and some newer Gigabit Ethernet features are not supported in aggregated Ethernet bundles.

Gigabit Ethernet IQ and SFP interfaces can be member links, but IQ- and SFP-specific features are not supported on the aggregated Ethernet bundle even if all the member links individually support those features.


Published: 2010-04-20