Cisco Catalyst 4500 Series - Configuring the LACP System Priority and System ID

27-16
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 27 Configuring EtherChannel and Link State Tracking
Configuring EtherChannel
w - waiting to be aggregated
d - default port
Number of channel-groups in use: 125
Number of aggregators: 125
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
25 Po25(RM) LACP Gi1/3/1(D) Gi1/3/2(D) Gi2/2/25(D) Gi2/2/26(w)
Configuring the LACP System Priority and System ID
The LACP system ID is the LACP system priority value combined with the MAC address of the switch.
To configure the LACP system priority and system ID, perform this task:
This example shows how to configure the LACP system priority:
Switch# configure terminal
Switch(config)# lacp system-priority 23456
Switch(config)# end
Switch# show module
Mod Ports Card Type Model Serial No.
----+-----+--------------------------------------+-----------------+-----------
1 2 1000BaseX (GBIC) Supervisor(active) WS-X4014 JAB063808YZ
2 48 10/100BaseTX (RJ45) WS-X4148-RJ JAB0447072W
3 48 10/100BaseTX (RJ45)V WS-X4148-RJ45V JAE061704J6
4 48 10/100BaseTX (RJ45)V WS-X4148-RJ45V JAE061704ML
M MAC addresses Hw Fw Sw Status
--+--------------------------------+---+------------+----------------+---------
1 0005.9a39.7a80 to 0005.9a39.7a81 2.1 12.1(12r)EW 12.1(13)EW(0.26) Ok
2 0002.fd80.f530 to 0002.fd80.f55f 0.1 Ok
3 0009.7c45.67c0 to 0009.7c45.67ef 1.6 Ok
4 0009.7c45.4a80 to 0009.7c45.4aaf 1.6 Ok
This example shows how to verify the configuration:
Switch# show lacp sys-id
23456,0050.3e8d.6400
Switch#
The system priority is displayed first, followed by the MAC address of the switch.
Command Purpose
Step 1
Switch(config)# lacp system-priority
priority_value
(Optional for LACP) Sets the LACP system priority and
system ID.
Valid values are 1 through 65535. Higher numbers have
lower priority. The default is 32768.
Switch(config)# no system port-priority
Reverts to the default.
Step 2
Switch(config)# end
Exits configuration mode.
Step 3
Switch# show lacp sys-id
Verifies the configuration.