User's Manual

5. Click Apply.
Using the CLI in ArubaOS 6.3.1.x-6.4.1.x
Execute the following commands to configure the LACP parameters (LMS IP and the GRE striping IP) on an AP
system profile.
(host) (config) #ap system-profile LACP
(host) (AP system profile "LACP") #lms-ip 192.0.2.1
(host) (AP system profile "LACP") #gre-striping-ip 192.0.2.2
Important Points to Remember
l In the upstream direction when the AP transmits GRE frames to the controller, the bonding driver must be
in active-active mode and not in the default active-standby mode to allow link aggregation.
l The W-AP220 Series and W-AP270 Series APs detect the LACP frames and auto-configures itself to LACP
mode. If gre-striping-ip is not configured, then the AP goes back to the active-standby mode. The AP link
may go down in this scenario depending on the behavior of the upstream switch.
l Ensure that the gre-striping-ip is unique and not used by any other host on the subnet.
l LACP support is limited to a use case where Enet0 and Enet1 ports of the AP are connected to a switch, and
LACP is enabled on the two corresponding switch ports.
l The port priority is not applicable to the AP as both ports need to be used. This value is always set to the
maximum numerical priority(0xFF), which is the lowest priority.
l The system priority is not configurable. It is set to the maximum numerical value (0xFFFF), which is the
lowest priority. This leaves control of the aggregate to the upstream switch.
l The timeout value is not configurable.
l The key is not configurable and the default key value is 1.
l LACP cannot be enabled if wired AP functionality is enabled on the second port. You cannot enable LACP if
the Enet 1 port is shutdown.
Troubleshooting Link Aggregation
The following show commands in the CLI can be used to troubleshoot Link Aggregation on W-AP220 Series and
W-AP270 Series APs:
l show ap debug lacp ap-name <ap-name>—Using this command, you can view if LACP is active on an
AP. It displays the number of GRE packets sent and received on the two Ethernet ports.
l show ap database—TStarting with ArubaOS 6.4.2, the output of this command includes an LACP Striping
flag (s) to indicate of the APis configured with a LACP striping IP address,
l show datapath tunnel—Using this command, you can verify if the 2.4GHz tunnels are anchored on the
gre-striping-ip (The GRE IDs for these tunnels are in a range between 0x8300 and 0x83F0)
l show datapath user—Using this command, you can verify if the gre-striping-ip has an entry with the ‘L’
(local) flag
l show datapath route-cache—Using this command, you can verify if the gre-striping-ip has an entry
with the controller MAC.
Service Tag
A service tag is a unique seven digit alphanumeric string that is used to electronically identify a Dell device. It is
similar to a serial number identifier. Starting with ArubaOS 6.4.2.0, you can view the service tag of some newer
Dell Networking W-Series ArubaOS 6.4.x | User Guide Access Points (APs) | 531