7.
Link Aggregation Groups (LAGs)
MN700004 Rev 01
60
Complex LACP Configuration
The following example establishes two dynamic link aggregation groups between three
switches, as shown in Figure 7-3.
Figure 7-3: Example of Two LAGs Configured on the Same Switch
Configuring Switch 1:
On
Switch 1
, LACP is enabled in active mode on the following interfaces:
•
1/1/1, 1/1/2, 1/1/3 and 1/1/4, as an aggregated link to Switch 2;
•
1/1/5 and 1/1/6, as an aggregated link to Switch 3.
1. Enter into Protocol Configuration mode and enable the LACP on switch 1:
Switch1
#
configure terminal
Switch1
(config)#
protocol
Switch1
(cfg protocol)#
link-aggregation lacp enable
Switch1
(cfg protocol)#
end
2. Display the LACP configuration:
Switch1
#
show link-aggregation lacp
System ID = 00 00 02 03 04 05
System priority = 32768
No LAC ports configured
3. Enable LACP on interfaces 1/1/1, 1/1/2, 1/1/3, 1/1/4, 1/1/5 and 1/1/6:
Switch1
(config)#
interface 1/1/1
Switch1
(config-if 1/1/1)#
link-aggregation lacp
Switch1
(config-if 1/1/1)#
interface 1/1/2
Switch1
(config-if 1/1/2)#
link-aggregation lacp
Switch1
(config-if 1/1/2)#
interface 1/1/3
Switch1
(config-if 1/1/3)#
link-aggregation lacp
Switch1
(config-if 1/1/3)#
interface 1/1/4
Switch1
(config-if 1/1/4)#
link-aggregation lacp
Switch1
(config-if 1/1/4)#
interface 1/1/5
Switch1
(config-if 1/1/5)#
link-aggregation lacp
Switch1
(config-if 1/1/5)#
interface 1/1/6
Switch1
(config-if 1/1/6)#
link-aggregation lacp
Switch1
(config-if 1/1/6)#
end
