Users Guide

131 | Configuring and Using Device Groups Dell Networking W-AirWave 8.2.4 | User Guide
the following steps to troubleshoot this scenario.
1. Select the Name of the down device in the list of devices on the APs/Devices > List or APs/Devices >
Down page. This automatically directs you to the APs/Device > Monitor page for that device.
2. Locate the Status field in the Device Info section. If the Status is Down, it includes a description of the
cause of the problem. Some of the common system messages are as follows in Table 74:
Message Meaning
AP is no longer
associated with
controller
This means the AP no longer shows up in any controller's AP list (on the W-AirWave
server). Either the AP was removed from the controller, or it has roamed to another
controller that W-AirWave does not have visibility to, or it is offline.
Controller is Down When a controller goes down, W-AirWave automatically marks all associated thin
APs down This is because communication to thin APs are via the controller, and W-
AirWave assumes that if the Controller has gone offline, then all associated APs are
down as well until they are reassociated with another Controller).
Downloading The AP is in the process of downloading firmware or configuration. (This only
applies to Cisco WLC thin APs and some Symbol APs.)
Error fetching existing
configuration
W-AirWave could not fetch a configuration for the device. Usually this is because W-
AirWave has incorrect credentials and was not able to log in.
ICMP Ping Failed (after
SNMP Get Failed)
The device is not responding and is likely offline.
SNMP Get Failed SNMP credentials and/or configuration may be incorrect. Verify that SNMP is
enabled and that credentials and access ports are configured correctly on both the
target device and in W-AirWave.
SNMP Trap W-AirWave received an SNMP trap from the controller indicating that the AP is no
longer associated to the controller.
Telnet Error: command
timed out
Telnet/SSH user name and password specified for that device is incorrect.
Unexpected LAN MAC
Address found at this
device’s IP address
If W-AirWave detects that the LAN MAC address of a device has changed this error
message will appear. This usually indicates that a physical hardware change has
occurred (while reusing the same IP Address) without using the Replace Hardware
feature in W-AirWave. This error may also indicate an IP address conflict between
two or more devices.
When an unexpected LAN MAC address is seen in a device's IP address, its
APs/Devices > Manage page displays the message Click Replace Hardware
(preferred) or Reset MAC Address to reset the LAN MAC address if this device has
been replaced with new hardware at the top of the page. Use the Replace
Hardware button at the bottom of that page in order to avoid this message.
Table 74: Common System Messages for Down Status
To view the detailed status of all your down devices at once, navigate to APs/Devices > Down (try the Down top
header stats link) and look at the Detailed Status column for the list of down devices. This column can be sorted using
the Filter icon ( ).
3. If the SNMP Get Failed message appears, select the APs/Devices > Manage tab to go to the management
page for that device.