Junos® OS Ethernet Interfaces Configuration ... - Juniper Networks

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, the physical interfaces can be:
• 24-port 10-Gigabit Ethernet PIC
• 2-port 40-Gigabit Ethernet PIC
• 2-port 100-Gigabit Ethernet PIC
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.
Copyright © 2012, Juniper Networks, Inc.
[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;
}
Chapter 29: Configuring Ethernet Interfaces for PTX Series Packet Transport Switches
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