Here in this short technote that demonstrates the Link Aggregation Control Protocol (LACP) features for the Aruba APs that have more than one Ethernet ports. IAPs support LACP which is based on IEEE802.3ad standard. This is used to balance traffic over aggregate ports.
2.1 Switch Configuration
We’ll start with the Aruba 2930F switch configuration.
Aruba-2930F-Lab# sh run
trunk 3,5 trk1 lacp
vlan 1
no untagged 1-2,4,6-10,Trk1
no ip address
exit
vlan 10
name "Lab"
untagged 7-8
tagged 2,4,9-10
ip address 10.10.10.1 255.255.255.0
dhcp-server
exit
vlan 20
name "VLAN20"
tagged 2,6-10
ip address 10.10.20.1 255.255.255.0
dhcp-server
exit
vlan 4093
name "AP-515"
untagged Trk1
tagged 2,10
no ip address
exit
2.2 IAP Configuration
There is no configuration needed, as soon as you configure the LAN switch side, this should be work. Here is the InstantOS firmware version we are using.
9c:8c:d8:c9:3e:ae# sh ver
Aruba Operating System Software.
ArubaOS (MODEL: 515), Version 8.5.0.2
Website: http://www.arubanetworks.com
(c) Copyright 2019 Hewlett Packard Enterprise Development LP.
Compiled on 2019-08-08 at 11:00:21 UTC (build 71711) by p4build
FIPS Mode :disabled
Reboot Time and Cause: AP Reboot reason: Power-reset
9c:8c:d8:c9:3e:ae#
Once we connect the AP-515 using both its interfaces, LACP is formed. Here is the IAP show command.
9c:8c:d8:c9:3e:ae# sh lacp status
AP LACP GRE Striping IP: 0.0.0.0
AP LACP Status
--------------
Link Status LACP Rate Num Ports Actor Key Partner Key Partner MAC
----------- --------- --------- --------- ----------- -----------
Up slow 2 9 532 b0:5a:da:98:b5:70
Slave Interface Status
----------------------
Slave I/f Name Permanent MAC Addr Link Status Member of LAG Link Fail Count
-------------- ------------------ ----------- ------------- ---------------
eth0 9c:8c:d8:c9:3e:ae Up Yes
eth1 9c:8c:d8:c9:3e:af Up Yes
GRE Traffic Received on Enet Ports
----------------------------------
Zone Index Controller IP Enet 0 Rx Count Enet 1 Rx Count
---- ----- ------------- --------------- ---------------
GRE Traffic Sent on Enet Ports
------------------------------
Zone Index Controller IP Enet 0 Tx Count Enet 1 Tx Count
---- ----- ------------- --------------- ---------------
9c:8c:d8:c9:3e:ae#
2.3 Monitoring Commands
Here are the switch command that we can use to check if the LACP is formed and operational.
Aruba-2930F-Lab# sh lacp
LACP
LACP Trunk Port LACP Admin Oper
Port Enabled Group Status Partner Status Key Key
----- ------- ------- ------- ------- ------- ------ ------
3 Active Trk1 Up Yes Success 0 532
5 Active Trk1 Up Yes Success 0 532
Aruba-2930F-Lab#
Aruba-2930F-Lab# sh lacp count
LACP Port Counters.
LACP LACP Marker Marker Marker Marker
Port Trunk PDUs Tx PDUs Rx Req. Tx Req. Rx Resp. Tx Resp. Rx Error
---- ------ --------- --------- -------- -------- -------- -------- --------
3 Trk1 397 360 0 0 0 0 0
5 Trk1 379 356 0 0 0 0 0
Aruba-2930F-Lab#
Aruba-2930F-Lab# sh trunks
Load Balancing Method: L3-based (default)
Port | Name Type | Group Type
------ + -------------------------------- ---------- + ----- --------
3 | AP-515 100/1000T | Trk1 LACP
5 | 100/1000T | Trk1 LACP
Aruba-2930F-Lab#
Aruba-2930F-Lab# sh lldp info remote-device
LLDP Remote Devices Information
LocalPort | ChassisId PortId PortDescr SysName
--------- + ------------------ ------------------ --------- ------------------
2 | b827eb-60c95b b8 27 eb 60 c9 5b eth0 raspberrypi
3 | 9c8cd8-c93eae 9c 8c d8 c9 3e ae eth1 9c:8c:d8:c9:3e:ae
5 | 9c8cd8-c93eae 9c 8c d8 c9 3e ae eth0 9c:8c:d8:c9:3e:ae
Aruba-2930F-Lab#
Solutions Tech Lab 
Leave a comment