Users Guide

575| Access Points Dell Networking W-Series ArubaOS 6.5.x| User Guide
l In W-AP324/W-AP325 access points, if AP uplink packet capture is taken, the downstream traffic will have
sequence number in GRE header. Wireshark Aruba wlan decoder will not be able to decode these packets
correctly since it looks for known Aruba GRE tunnel IDs.
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 Enet 0 and Enet 1 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 , W-
AP270 Series, and W-AP320 Series access points:
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. Using this
command with verbose option on W-AP324/W-AP325 access points displays packet re-ordering statistics of
each wlan client.
l show ap database—Starting 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 on W-AP220 Series/W-AP270 Series access points, 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) . On W-AP324/W-AP325 access points, use the verbose option to
verify that 5GHz tunnels have striping IP set in the column StripIP (The GRE IDs for these tunnels are in a
range between 0x8200 and 0x82F0).
l show datapath station—On W-AP324/W-AP325 access points, using this command displays the LACP
sequence number sent in the GRE header of the last packet to the client. This information is displayed
under Seq column.
l show ap remote debug anul-sta-entries—On W-AP324/W-AP325 access points, using this command
displays LAG enabled/disabled per station and data drops due to LAG packet reordering.
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.
Recording Consolidated AP-Provisioned Information
Starting from ArubaOS 6.5, a new feature that records the consolidated AP-provisioned information is
introduced. This is especially handy when you upgrade the APs from ArubaOS 6.x to ArubaOS 8.0 version.
The DNS or the DHCP configuration can change over time in a customer’s network environment and the
existing features might not provide adequate information about whether an AP has not rebooted at all. Also, a
DHCP scope change might affect an AP’s connectivity with the controller after the AP reboots. In such
situations, where an AP does not come UP after a reboot, it would help troubleshooting when information