This topic describes:
•
Link Aggregation Group (LAG) on page 1100
•
Link Aggregation Control Protocol (LACP) on page 1101
Link Aggregation Group (LAG)
You configure a LAG by specifying the link number as a physical device and then
associating a set of interfaces (ports) with the link. All the interfaces must have the same
speed and be in full-duplex mode. Juniper Networks Junos operating system (Junos OS)
for EX Series Ethernet Switches assigns a unique ID and port priority to each interface.
The ID and priority are not configurable.
The number of interfaces that can be grouped into a LAG and the total number of LAGs
supported on a switch varies according to switch model. Table 162 on page 1100 lists the
EX Series switches and the maximum number of interfaces per LAG and maximum
number of LAGs they support.
Table 162: Maximum Interfaces per LAG and Maximum LAGs per Switch
Maximum LAGs
Maximum Interfaces per
LAG
Switch Model
32
8
EX2200
32
8
EX3200
64
8
EX4200
64
8
EX4500
255
12
EX8200
When configuring LAGs, consider the following guidelines:
•
The LAG must be configured on both sides of the link.
•
The interfaces on either side of the link must be set to the same speed.
•
You can configure and apply firewall filters on a LAG.
•
LACP can optionally be configured for link negotiation.
You can combine physical Ethernet ports belonging to different member switches of a
Virtual Chassis configuration to form a LAG. See “Understanding Virtual Chassis
Configurations and Link Aggregation” on page 932.
Copyright © 2010, Juniper Networks, Inc.
1100
Complete Software Guide for Junos
®
OS for EX Series Ethernet Switches, Release 10.3
Summary of Contents for JUNOS OS 10.3 - SOFTWARE
Page 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Page 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Page 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Page 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Page 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Page 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...