Troubleshooting Concepts; Symptoms And Solutions; Connectivity Issues; Basic Software Setup And Configuration Problems - HP WL520 User Manual

troubleshooting concepts

troubleshooting concepts troubleshooting concepts troubleshooting concepts
The following list identifies important troubleshooting concepts and topics. The most common initialization and installation
problems relate to IP Addressing. For example, you must have valid IP Addresses for both the HP WL520 device and the TFTP
server before you can transfer files over Ethernet.
IP Address management is fundamental IP Addre IP Address management is fundamental IP Address management is fundamental. Refer to the "Documenting Your Configuration" section ss manage ment
Factory default units are set for "Dynamic" (DHCP) IP Address assignment. The default IP Address for the HP WL520 is Factory default units are set for "Dynamic" (DHCP) IP Address assignment Factory default units are set for "Dynamic" (DHCP) IP Address assignment Factory def ult units a ar e set
10.0.0.1. If you connect the HP WL520 unit to a network with an active DHCP server, then use ScanTool to locate the IP
Address of your unit. If a DHCP server is not active on your subnet, then the ScanTool can be used to configure your
HP WL520.
The Trivial File Transfer Protocol (TFTP) provides a means to download and upload files. These files include the HP WL520 The Trivial File Transfer Protocol (TFTP) provides a means to download and upload files
The Trivial File Transfer Protocol (TFTP) provides a means to download and upload files The Trivial File Transfer Protocol (TFTP) provides a means to download and upload files
Image (executable program) and configuration files.
If the HP WL520 If the HP If the HP If the HP WL L 520 password is lost or forgotten, you will need to reset to default values. The WL520 W 520 password is lost or forgotten, you will need to reset to default values password is lost or forgotten, you will need to reset to default values password is lost or forgotten, you will need to reset to default values
procedure resets configuration, but does not change the current AP Image.
If If all else fails... The If all else fails If all else fails all else fa ils Forced Reload procedure
values. Then you can download a new image and configure the unit.
HP HP WL520 HP WL520 Supports a Comma HP WL WL520 520 Supports a Command Line Interface (CLI). If you are having trouble locating your HP WL520 on the network, Supports a Command Line Interface (CLI) Supports a Command Line Interface (CLI)
connect to the unit directly using the serial interface and refer
and parameter names.

symptoms and solutions

symptoms and solutions symptoms and solutions symptoms and solutions

connectivity issues

connectivity issues connectivity issues connectivity issues
Connectivity issues include any issues that prevent you from powering up or connecting to the HP WL520 device.
hp hp WL520 hp WL520 unit will not boot - no led activity WL520 unit will not boot - no led activity
hp WL520 unit will not boot - no led activity unit will not boot - no led activity
1. Make sure your power source is operating.
2. Make sure all cables are correctly connected to the HP WL520 unit.
serial link does not work serial link does not work
serial link does not work serial link does not work
1. Make sure you are using the proper serial port cable.
2. Double-check the physical network connections.
3. Make sure your PC terminal program (such as HyperTerminal) is active and configured to the following values:
– Com Port: (COM1, COM2, etc. depending on your computer);
– Baud rate: 9600; Data bits: 8; Stop bits: 1; Flow Control: None; Parity: None;
– Line Feeds with Carriage Returns
(In HyperTerminal select:
File -> Properties -> Settings -> ASCII Setup -> Send Line Ends with Line Feeds.) File -> Properties -> Settings -> ASCII Setup -> Send Line Ends with Line Feeds File -> Properties -> Settings -> ASCII Setup -> Send Line Ends with Line Feeds File -> Properties -> Settings -> ASCII Setup -> Send Line Ends with Line Feeds
ethernet link does not work ethernet link does not work ethernet link does not work ethernet link does not work
1. Double-check the physical network connections. Use a known-good unit to Make sure the network connection is present.
Once you have the HP WL520 IP Address, you can use the "Ping" command over Ethernet to test the IP Address. If the
HP WL520 responds to the Ping, then the Ethernet Interface is working properly.
2. Perform network infrastructure troubleshooting (check switches, routers, etc.).

basic software setup and configuration problems

basic software setup and configuration problems basic software setup and configuration problems basic software setup and configuration problems
lost lost hp hp WL520, t ln t or s hp WL520 WL520 e e , , telnet, or snmp password
lost lost hp WL520 , telnet, or snmp password , telnet, or snmp password
1. Perform the Reset to Factory Default procedure
does not affect the HP WL520 Image.
The default HP WL520 password is "public", and the default Telnet password is also "public".
2. Document your password(s) in the form provided in
is fu ndam tal en
for "Dynamic" ( HCP) D IP Add ess assi
erases the current HP WL520 Image and sets the unit to factory default
nd Li ne Int rf e ( e ac CLI)
nmp pa ssword
in this guide. This procedure resets system and network parameters, but
Recording Your Configuration
r gn ment
Using the Command Line Interface, for CLI command syntax
Settings.
Reset to Factory Default
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