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Configuring Aggregated Ethernet Interfaces on PTX Series Packet Transport Switches

IEEE 802.3ad link aggregation enables you to group Ethernet interfaces to form a single link layer interface, also known as a link aggregation group (LAG) or bundle. Link aggregation can be used for point-to-point connections. It balances traffic across the member links within an aggregated Ethernet bundle and effectively increases the uplink bandwidth. Another advantage of link aggregation is increased availability because the LAG is composed of multiple member links. If one member link fails, the LAG continues to carry traffic over the remaining links.

This topic describes how to configure aggregated Ethernet interfaces on PTX Series Packet Transport Switches.

On PTX Series Packet Transport Switches, aggregated Ethernet support includes the following features:

  • A consistent interface type (et fpc/pic/port) across all Ethernet interfaces.
  • Ability to bundle multiple Ethernet interfaces
  • Fault tolerance
  • Load balancing between child links
  • Advanced features including flexible VLAN tagging and Ethernet services encapsulation

Aggregated Ethernet interfaces can use interfaces from different FPCs or PICs. The following configuration is sufficient to get an aggregated Gigabit Ethernet interface up and running.

[edit chassis]aggregated-devices {ethernet {device-count 2;}}
[edit interfaces]et-0/0/0 {gigether-options {802.3ad ae0;}}et-0/0/1 {gigether-options {802.3ad ae0;}}ae0 {vlan-tagging;unit 0 {vlan-id 100;family inet {address 200.200.1.2/24;}}unit 1 {vlan-id 101;family inet {address 200.200.2.2/24;}}}

Published: 2013-02-11