Black Box® QuickStart Guide
for the SmartPath AP (LWN602A)
Different Subnets (Use of DHCP
options or DNS resolution)
This QuickStart guide explains how to set up a SmartPath AP LWN602A device as a managed
SmartPath access point and how to mount it on a ceiling or wall.
Connect a standard Ethernet
cable with RJ-45 connectors
from ETH0 on the SmartPath
AP LWN602A to a switch.
DNS Server
If the switch provides
PoE (Power over
Ethernet), cabling the
SmartPath AP to the
switch will cause the
SmartPath AP to power
on in a few seconds.
SmartPath EMS
Some other network devices. (They
might all be incorporated in the same
device, such as a router or firewall.)
If the switch does not
provide PoE, use the
AC/DC power adapter
(optional) to connect
the SmartPath AP to
a 100­–240 VAC power
Connecting to a SmartPath EMS
Same Subnet (Automatic Discovery)
When SmartPath EMS is in a different
subnet, do one of the following: (1) set
the SmartPath EMS IP address or domain
name on the SmartPath AP; or (2) configure
a DHCP server to return the SmartPath
EMS IP address or domain name; or (3)
add an A-record or a host record that
resolves "smartpath.<domain_name>" to the
SmartPath EMS IP address on a DNS server
that is authoritative for that domain.
Cable the SmartPath AP to an Ethernet network—a SmartPath AP connected directly to the
network like this is called a portal—or place it within radio range of a portal so that it forms
a wireless link through the portal to the wired network. This kind of SmartPath AP is called
a mesh point. By default, a SmartPath AP acts as a DHCP client and gets its network settings
automatically from a DHCP server. (You can also configure the SmartPath AP with static
network settings through the CLI. See the next section, “Using the Virtual Access Console,”
for information about making a wireless—or “virtual”—console connection to the CLI on the
SmartPath AP.)
Using the Virtual Access Console
The virtual access console is a way of accessing the Command Line Interface (CLI) on a
SmartPath AP LWN602A wirelessly through a special SSID that the SmartPath AP, by default,
automatically activates for administrative access when it has no configuration and cannot reach
its default gateway. As explained in the previous section, after connecting a SmartPath AP to
the network and powering it on, it acts as a DHCP client and tries to get its network settings
automatically from a DHCP server in VLAN 1. However, if there is no DHCP server in that VLAN,
if the native VLAN for the network segment is not 1, or if you just want to assign the SmartPath
(LWN602A) a static IP address, then you can access the CLI through the virtual access console
SSID and define the network settings yourself.
The default virtual access console SSID name is “<SmartPath AP_hostname>.” The default host
name of a SmartPath (LWN602A) consists of "BB-" plus the last six digits of its MAC address; for
example, BB-123456. In this case, the name of the default virtual access console SSID would be
"BB-123456". By default, this SSID uses blackbox as the PSK (preshared key) for authenticating
user access. To access the virtual access console, do the following:
A mesh point initially forms a cluster with its portal using the default cluster cluster0.
Through this link, the mesh point can reach the network and get its network settings
through a DHCP server. Then it can form a CAPWAP connection with the SmartPath EMS. (To
add a mesh point after changing the cluster name, first connect it to the wired network.
Next, push a configuration with the new cluster name to it from the SmartPath EMS. Finally,
deploy it as a mesh point.
CAPWAP (Control and Provisioning of Wireless Access Points) is a protocol that access points
use to contact a management device and communicate with it. After getting its network
settings through DHCP, the SmartPath AP then acts as a CAPWAP client and tries to reach
a CAPWAP server, which in this case is a SmartPath EMS Appliance. If the SmartPath AP
is configured with the SmartPath EMS IP address or domain name or if it receives DHCP
attributes specifying either a SmartPath EMS IP address or domain name, it uses those
settings to contact it.
If the SmartPath AP is not configured with SmartPath EMS settings and does not receive them
through DHCP, it then checks if it can do a DNS lookup to resolve “SmartPathEMS.<local_
domain>” to an IP address (“<local_domain>” is the domain that the DHCP server assigned to
the SmartPath AP).
Finally, if none of the previous efforts enables the SmartPath AP to contact the SmartPath
EMS, the SmartPath AP broadcasts CAPWAP Discovery messages on its subnet. If the
SmartPath EMS is in the same broadcast domain, it responds, and the two devices negotiate
a secure CAPWAP connection.
If SmartPath EMS is in the same subnet as the SmartPath AP, the SmartPath AP finds and
connects to it automatically. However, if SmartPath EMS is in a different subnet from the
SmartPath AP, you must configure settings on the SmartPath AP, the DHCP server, or DNS
server so that one of the other SmartPath EMS discovery methods can succeed:
(1) Manually configure the SmartPath AP with the SmartPath EMS IP address or domain name.
(2) Configure a DHCP server to return the SmartPath EMS IP address or domain name in one
of the DHCP options.
(3) Configure the local authoritative DNS server with an A-record or a host record that
resolves “SmartPath EMS” to the SmartPath EMS IP address.
When the SmartPath AP has a specific IP address for the SmartPath EMS, it can then
send unicast CAPWAP Discovery Request messages to it at that address.
SmartPath AP
The SmartPath AP broadcasts CAPWAP
Discovery Request messages until it
receives a response from SmartPath
EMS, which is a CAPWAP server, in the
same subnet. Then they negotiate a
secure CAPWAP connection with each
Using your wireless client,
scan for wireless networks.
If you are within range, an
SSID such as "BB-123456"
Select the SSID, and when
prompted to enter a
network key, type blackbox,
and then click Connect.
Check the IP address of
the default gateway that
the DHCP server on the
SmartPath AP LWN602A
assigned your client.
Then make an SSH or
a Telnet connection
to the SmartPath AP at that
IP address. When prompted
to enter your credentials, enter
the default Black Box login name
(admin) and password (blackbox).
Windows IP Configuration
After logging in to the virtual access console, you can view the status of various
functions and make configuration changes. Here are some commonly used commands.
Use these commands:
To do the following:
show interface
Check the status of both wired and
wireless interfaces
show interface mgt0
See the network settings (IP address,
netmask, default gateway) and VLAN ID
of the mgt0 interface
no interface mgt0 dhcp client
Disable the DHCP client
interface mgt0 ip <ip_addr>
Set the IP address and netmask of the
mgt0 interface
interface mgt0 native-vlan <id>
Set the native (untagged) VLAN that the
switch infrastructure in the surrounding
wired and wireless network uses
show capwap client
See CAPWAP client settings and status
capwap client server name
Set the IP address or domain name of
the CAPWAP server (SmartPath EMS
capwap client vhm-name <string>
Set the VHM (virtual SmartPath EMS
Appliance) to which the client belongs
show cluster
See the cluster name
show cluster <string> neighbor
Check for any nearby cluster members
cluster <string> ...
Create a cluster and set its parameters
show ssid
See a list of all SSID names
ssid <string> ...
Configure an SSID
interface { wifi0 | wifi1 } ssid
Bind an SSID to a wireless interface in
access mode
To see a list of commands, and their accompanying CLI Help, type a question mark ( ? ).
For example, to see all the show commands, enter show ?
If you want to find a command that uses a particular character or string of characters,
you can do a search using the following command: show cmds | include
<string>, where <string> is the word or string of characters you want to find.
Device- and platform-specific CLI reference guides are available on-line. (To learn how
to access them, see "Where to go for more information" elsewhere in this document.)
Status LEDs
The status indicator has been incorporated into the Black Box logo on the top of the
SmartPath AP (LWN602A). It is illuminated by various colors to indicate different states
of activity. The meanings of the colors are explained below:
• Dark: There is no power or the status indicator is disabled.
• Blue: solid: The device is booting up or there is no backhaul link; flashing: the
device is shutting down.
• Green: The default route is through the backhaul Ethernet interface, but not all
conditions for normal operations (white) have been met.
• Yellow: The default route is through a backhaul Wi-Fi interface, but not all
conditions for normal operations (white) have been met.
• White: The device is powered on and the firmware is operating normally; that is,
a wireless interface in access mode is up, a wired or wireless backhaul link is up,
and the SmartPath has a CAPWAP connection to a SmartPath EMS Appliance.
• Purple: A new image is being loaded from SmartPath EMS Appliance or a
management AP.
• Orange: An alarm indicating a firmware or hardware issue has occurred.
For locations where the status indicator might be a distraction or attract unwanted
attention, you can adjust its brightness level from bright (the default) to soft to
dim. You can even turn it off completely. In the SmartPath EMS Appliance, choose
the brightness level that you want from the LED Brightness drop-down list on the
Configuration > Management Services > Management Options page. Through the CLI,
enter [ no ] system led brightness { soft | dim | off }. The four settings are
shown below.
Ethernet adapter Wireless
Network Connection:
Connection-specific DNS Suffix . :
IP Address. . . . . . :
Subnet Mask . . . . . :
Default Gateway . . . :
Mounting the SmartPath AP (LWN602A)
Using the track clip, you can mount the SmartPath AP (LWN602A) to the tracks of a dropped ceiling
grid. Using just a pair of screws, you can mount the SmartPath AP to any flat surface that can
support its weight (1.75 lb., 0.8 kg). Both mounting options are explained below.
Note: In addition to these methods, you can also mount the SmartPath LWN602A on a table
using the set of four rubber feet that ship with the product. Simply peel the rubber feet
off the adhesive sheet and press them against the underside of the SmartPath AP in its
four corners.
Surface Mount
You can attach the SmartPath AP (LWN602A) to any flat surface that supports its weight. First,
attach two screws to the surface. Then, make a hole in the wall a few inches or centimeters
above the screws so that you can pass the cables through the wall to the SmartPath AP. Finally,
attach the device to the screws and connect the cables.
Mount the SmartPath AP (LWN602A) on a wall as explained below.
Side view
Ceiling Mount
Position two #6 or #8 screws 2" (5 cm)
apart and fasten them to a secure object
such as a wall, post, or beam.
Cut or drill a hole in the wall 1–2" (2.5–5 cm)
above the screws to pass the cables through
to the SmartPath AP.
Position the SmartPath AP so that the screws
enter the two upper keyhole-shaped slots
on the underside of the SmartPath AP. Then
push the SmartPath AP 120 downward to lock
it in place.
Connect the cables to the SmartPath AP.
To mount the SmartPath AP (LWN602A) to a track in a dropped ceiling, use the appropriate track
clip for the width of the ceiling track. Two clips ship with the SmartPath AP: one for 1"-wide (2.54
cm) tracks and one for 1/2"-wide (1.27 cm) tracks.
Nudge the ceiling tiles slightly away from the track to clear some space, and slide one
tab of the track clip over the edge of the track. Making sure that the tips of the track
clip prongs are positioned against the middle of the track, press upward on the other
tab until it clears the track edge. Keeping the prongs away from the track edges until
both tabs grip the track ensures that the clip does not snap into place prematurely
with only one tab in position.
Position the clip so one tab is over the
edge of the ceiling track. (Note that the
ceiling track is shown as transparent.)
The two prongs press upward against
the middle of the ceiling track.
SmartPath AP
120 (LWN602A)
Press the other tab upward, flexing
the prongs against the track until
the tab clears the edge of the track.
Depending on how a device is powered and how
it connects to the network, you might connect
one or two Ethernet cables and a power cable.
Instead of passing the cables through a hole in the wall, you can also simply run them along the
wall from the port side of the SmartPath AP (LWN602A), which is located at the top of the device
when it is mounted on a wall.
Deployment and Configuration Tips
The following are some tips and suggestions to help you troubleshoot a few common problems
that might arise when setting up the SmartPath AP (LWN602A):
• Make sure that you connect the larger antennas to the 2.4-GHz connectors and the
smaller ones to the 5-GHz connectors.
• If you manage the SmartPath AP through SmartPath EMS Online and it does not show up
on the Monitor > Access Points > SmartPath APs page, do the following:
- Check connectivity to SmartPath EMS Online: ping smartpath.blackbox.com
- Make sure that any intervening firewalls allow one of the following sets of services from
the SmartPath AP to SmartPath EMS Online:
CAPWAP (UDP 12222), SSH (TCP 22), and HTTPS (TCP 443)
HTTP (TCP 80) and HTTPS (TCP 443)
• If a client cannot form an association, check that the client is within range and that it is
configured to use the same authentication method as the SSID. For example, if the client
is configured to use Open or WEP authentication, but the SSID is set for WPA or WPA2, the
client will not be able to associate with the SmartPath AP. To see the security settings an
SSID, click WLAN > Configure WLAN/SSID, and look at the Access Security column on that
• If a client associates and authenticates itself, but the SmartPath AP cannot forward
traffic, check that the SmartPath AP is assigning the correct user profile and, if so, that it
is also assigning the correct VLAN. To see the user profile and VLAN that a SmartPath AP
assigns a client, enter show ssid <string> station, and check the UPID (user profile
ID) and VLAN columns. If those are correct, then check that the client has received its
network settings through DHCP. To check connectivity to the DHCP server, make a console
or an SSH connection to the SmartPath AP, send a probe, and see if it elicits a response:
interface mgt0 dhcp-probe-vlan-range <vlan1> <vlan2>. Also check that the
VLAN configuration for the port on the connecting switch is correct.
To remove all settings and return to factory default settings, enter the reset config
command or use a pin to press the Reset button on the chassis and hold it down for five
Where to Go for More Information
Twist the clip until the prongs snap into place and grip the edges of the track.
Locking the SmartPath AP (LWN602A)
If necessary, slide the clip along the track to position it exactly where you want.
To lock the SmartPath AP (LWN602A) to a secure object, use a Kensington lock and cable. Loop
the cable around a securely anchored object, insert the Kensington lock in the device lock slot
in the SmartPath AP, and engage the locking mechanism.
SmartPath AP
(LWN602A) mounted
to a ceiling track
With the SmartPath upside down, lift it until the threaded stud on the track clip enters
the hole in the SmartPath AP (LWN602A). Revolve the SmartPath AP until it is securely
attached to the clip.
Ceiling Track
(shown as
SmartPath AP
Device Lock Slot
Kensington Security Lock
When you have the SmartPath AP in the correct location, cut or drill a hole in the ceiling
through which you can then pass the Ethernet and power cables. Pass the cables through
the hole and attach them to the SmartPath AP. When done, adjust the ceiling tiles back into
NOTE: For dropped ceilings with recessed tracks, Black Box provides an optional ceiling mount
accessory kit for the SmartPath (LWN602A). For information, refer to SmartPath AP
(LWN602A) Mounting Instructions for Recessed Ceiling Tracks, which accompanies
the kit.
Support Beam
Technical Documentation
Black Box provides various technical documents for its products. For information about CLI
commands, see the CLI reference guides available in HTML format. For information about
SmartPath EMS Appliance and SmartPath AP hardware and software topics, see the SmartPath
Deployment Guide (PDF). The deployment guide contains information about SmartPath APs
and SmartPath EMS appliances, WLAN deployment considerations, and detailed configuration
instructions for commonly used features.
SmartPath EMS Appliance Help System
The SmartPath EMS Help System contains a wealth of information about all the features you
can configure through SmartPath EMS Appliance. To access it, click the Help icon in the upper
right corner of the GUI. A Help topic that pertains to the currently active GUI page appears.
To see other Help topics, use the table of contents to browse the system or the search tool to
find information about a specific subject.
Support Site
Access technical support services, documentation, and software at ftp://ftp.blackbox.com.
You can contact Black Box Tech Support for assistance through the Web site at
www.blackbox.com, by e-mail at [email protected], or by phone at 724-746-5500.
Loop the cable around a secure object,
such as a support beam, and then insert
the T-bar component of the lock into
the device lock slot on the SmartPath
AP and turn the key to engage the lock
© Copyright 2010. Black Box Corporation. All rights reserved.
Black Box and the Double Diamond logo are registered trademarks
of BB Technologies, Inc. Any other trademarks mentioned in this manual
are acknowledged to be sthe property of the trademark owners.
LWN602A QSG, rev. 1
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