Network Interfaces - Juniper JUNOS OS 10.3 - SOFTWARE Manual

Example: Configuring Link Aggregation Groups Using Uplink Virtual Chassis Ports
Requirements
Copyright © 2010, Juniper Networks, Inc.
Configuring a Virtual Chassis (CLI Procedure) on page 1011
Configuring a Virtual Chassis (J-Web Procedure) on page 1015
You can form link aggregation groups (LAGs) between Virtual Chassis member switches
in different wiring closets using uplink Virtual Chassis ports (VCPs) and, on EX4200-24F
switches, network VCPs. LAGs balance traffic across the member links, increase the
uplink bandwidth, and provide increased availability. To form LAGs using uplink or network
VCPs, you configure the uplink module interfaces or network interfaces on the member
switches as VCPs and connect the VCPs using fiber-optic cables. For the LAGs to form,
the uplink or network VCPs on each member switch that will form a LAG must operate
at the same link speed and you must interconnect at least two uplink or network VCPs
on each of those members. You can connect uplink or network VCPs operating at different
link speeds, but they will not form a LAG.
NOTE: The LAGs formed by VCPs are different from LAGs formed by Virtual
Chassis network interfaces. For more information on LAGs formed by network
interfaces, see "Understanding Virtual Chassis Configurations and Link
Aggregation" on page 932.
This example shows how to configure uplink module interfaces and network interfaces
as VCPs on multiple member switches of a Virtual Chassis configuration and then connect
them to form LAGs:
Requirements on page 999
Overview and Topology on page 1000
Configuration on page 1001
Verification on page 1004
Troubleshooting on page 1007
This example uses the following hardware and software components:
Junos OS Release 9.6 or later for EX Series switches
Five EX4200 switches, one of which is an EX4200-24F model
Two SFP uplink modules
Two XFP uplink modules
Chapter 44: Virtual Chassis—Configuration Examples
999