Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual page 1365

Action
Meaning
Troubleshooting
Problem
Solution
Related
Documentation
Example: Configuring Aggregated Ethernet High-Speed Uplinks with LACP Between
an EX4200 Virtual Chassis Access Switch and an EX4200 Virtual Chassis Distribution
Switch
Copyright © 2010, Juniper Networks, Inc.
show interfaces ae1 terse
Interface
ae1
ae1.0
The output shows that the
Troubleshooting a LAG That Is Down
The command shows that the LAG is
show interfaces terse
Check the following:
Verify that there is no configuration mismatch.
Verify that all member ports are up.
Verify that a LAG is part of family ethernet switching (Layer 2 LAG) or family inet (Layer
3 LAG).
Verify that the LAG member is connected to the correct LAG at the other end.
Verify that the LAG members belong to the same switch (or the same Virtual Chassis).
Example: Configuring an EX4200 Virtual Chassis with a Master and Backup in a Single
Wiring Closet on page 917
Example: Configuring Aggregated Ethernet High-Speed Uplinks with LACP Between
an EX4200 Virtual Chassis Access Switch and an EX4200 Virtual Chassis Distribution
Switch on page 947
Example: Connecting an Access Switch to a Distribution Switch on page 1540.
Virtual Chassis Cabling Configuration Examples for EX4200 Switches
Installing an Uplink Module in an EX4200 Switch
Uplink Modules in EX4200 Switches
EX Series switches allow you to combine multiple Ethernet links into one logical interface
for higher bandwidth and redundancy. The ports that are combined in this manner are
referred to as a link aggregation group (LAG) or bundle. The number of Ethernet links
you can combine into a LAG depends on your EX Series switch model. See "Understanding
Aggregated Ethernet Interfaces and LACP" on page 1244 for more information. EX Series
switches allow you to further enhance these links by configuring Link Aggregation Control
Protocol (LACP).
Chapter 57: Examples of Interfaces Configuration
Admin Link Proto Local
up down
up down inet
link is down.
ae1
Remote
down:
1261