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LANsurveyor automatically discovers your network and produces comprehensive, easy-to-view network maps that can be exported into Microsoft Office® Visio®. Get up-to-date network maps in just minutes!

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Frequently Asked Questions About LANsurveyor

   What TCP and UDP ports are used by LANsurveyor?

   Responder Clients uses both TCP and UDP port 4347.

  • SNMP (default on): UDP port 161
  • ICMP (Ping) (default on): ICMP
  • Responder Clients (default on): UDP port 4347
  • NetBIOS Clients (default on): UDP port 137
  • SIP (VoIP) Nodes (default on): UDP port 5060 (default)
  • Retrospect Clients (default off): UDP port 497
  • Timbuktu Clients (default off): UDP port 407

   What SNMP MIBs does LANsurveyor use?

   LANsurveyor uses the following MIBs:

  • MIB-II that exists on nearly all IP routers and many IP devices
  • Printer MIB that exists on some IP printers
  • Bridge MIB to determine switch port connectivity
  • Repeater MIB to determine hub port connectivity
  • Various Cisco-specific MIBs to determine user-defined interface names and switch ports

   How does LANsurveyor's network discovery affect my network?

   During network discovery, LANsurveyor uses an almost immeasurable amount of network bandwidth. For each type of discovery method (ICMP Ping, NetBIOS, SIP, etc.), LANsurveyor sends one small (< 300 byte) UDP packet per IP address. In addition, LANsurveyor breaks up large IP address ranges into blocks of 10 addresses and waits several seconds for responses from those 10 addresses. By searching the network in this way, LANsurveyor should have no noticeable affect on your network bandwidth or devices.

   How is LANsurveyor licensed?

   LANsurveyor can be installed on a single machine to provide unlimited mapping. This means that LANsurveyor can be installed on a laptop computer and used at any number of sites for mapping and management purposes.

   How do I map every IP address to its corresponding switch or hub port?

   LANsurveyor uses a number of techniques to map managed switch/hub ports to their corresponding IP address nodes. It's important to remember switches and hubs are Layer 2 (Ethernet address) devices that don't have Layer 3 (IP address) information.

   My SNMP device has custom MIBs, how do I input them into LANsurveyor?

   LANsurveyor does not support the use of custom MIBs and there is no way to enter a custom MIB into LANsurveyor. LANsurveyor only uses MIBs specified by Internet standards. Manufacturers of SNMP devices may choose to implement all of the SNMP standards or they may choose to implement a subset.

Below is the list of standards LANsurveyor uses during the auto-discovery process. LANsurveyor may not use all of these during auto-discovery; it depends on the SNMP devices on your network. If you are unsure about which standards your device supports, check the documentation or contact the device manufacturer.

  • RFC 1213
  • RFC 1493
  • RFC 2108
  • RFC 2674

   How do I upgrade the demo version of LANsurveyor to the licensed version?

   To upgrade to the licensed version of LANsurveyor, simply install the licensed version over the demo version. Installing the licensed version over the demo version will preserve the configuration settings from the demo version.

   Can nodes connected via wireless access points be detected and mapped?

   If the wireless access point is configured as a bridge, then LANsurveyor will be able to map the nodes connected to it. If the wireless access point (or any router) is configured to use network address translation (NAT), then no network analysis tool will be able to go beyond the device to examine the nodes connected to it. NAT is designed to hide multiple workstations behind a single IP address.

   What is a Responder Client?

   A Responder Client is a software agent that collects asset information from Windows, Mac OS and OS X, and Linux workstations and servers and sends the information to LANsurveyor.

   What TCP and UDP ports are used by a Responder Client?

   A Responder Client uses both TCP and UDP port 4347.

   How do Responder Clients help me inventory my network?

   LANsurveyor Responder Clients greatly enhance the functionality of LANsurveyor by providing device inventory and direct access to networked computers. Responder Clients enable LANsurveyor to provide complete hardware and software asset reports, distribute software, and directly manage the client computers, either individually or as a group.

In addition to the basic hardware asset information provided by LANsurveyor, Responder Clients deliver detailed software and hardware device information, such as:

  • Installed software, including application name and version
  • OS type and version
  • CPU, RAM and disk volume details
  • MAC address, IP address, and machine name
  • PCI cards

   What is the difference between LANsurveyor and the LANsurveyor Enterprise Bundle?

   LANsurveyor Enterprise Bundle is optimally packaged for deployment in an enterprise campus or for use by departmental teams of IT professionals. The bundle provides a "starter pack" for enterprises by combining LANsurveyor and Responder Client licenses in an attractively priced bundle:

  • Three (3) LANsurveyor licenses
  • One thousand (1000) Responder Clients

Additional LANsurveyor licenses or Responder Client packs can be purchased separately as needed.

   What are the limitations with the free LANsurveyor evaluation version?

   The free 21-day LANsurveyor evaluation includes the following limitations.

  • Generate Switch/Hub Ports Report – limited to 5 ports per switch
  • Printing and Exporting are disabled
  • Ability to export your network map to Microsoft Visio is disabled; however, you can view a sample network map within Microsoft Visio.
  • Data collection from Responder Clients is limited to 5 servers/workstations

   How can I customize my large network map?

   Help on customizing LANsurveyor maps is available in a Customizing Maps PDF and the LANsurveyor Admin Guide.

   How do I configure email alerts?

   In order to send email alerts, LANsurveyor must be configured to use your preferred email server(s). To configure your email server values, select Tools > Options > Network and enter the following values:

  • Primary Email Server: the IP address or domain name of your main SMTP (email) server — this is probably the same server that is configured in your email client software.
  • Backup Email Server: the IP address or domain name of a backup or secondary SMTP server, which will be used if the Primary Email Server is not responding
  • Email From Address: the email address that LANsurveyor will use as the "from" address when sending the email
  • Use SMTP Authentication: check this option if your SMTP server requires authentication in order to send email (LANsurveyor uses CRAM-MD5 or LOGIN authentication methods)
  • SMTP Authentication Password: the password associated with the "from" address used during authentication

   How can I map just my routers and switches?

   LANsurveyor's network discovery discovers all network nodes, regardless of whether they are end nodes, routers, switches or any other node with an IP address. However, if you have your network devices configured with unique community strings, then you can populate the community string fields with the router and switch community strings and disable ICMP and NETBIOS discovery options. Another great option is to perform a complete discovery and leverage the “Display Level” options in the toolbar. Click the "Display Level 1 and 2 Nodes" button (stacked blue triangle icons) to exclude end nodes from your map and click “Display Level 1” to only view your routers.

   Why are some of my devices not mapped to their connected switches?

  There are several reasons why LANsurveyor would not show connections between devices and their connected switches. You can find a detailed explanation here.