User`s guide

Chapter 6 Interpreting Test Results
Status and Error Messages for Network Tests
LanScaperPRO Network Tester User’s Guide 69
No Rtr Response
The IP address is off the LAN, requiring the ping go
through the Router, but the Router IP address is not
responding to ARP.
No Router IP
The DHCP server did not provide an IP address for the
Router.
PoE Homebrew
Some devices designed prior to the advent of IEEE
802.3af Power over Ethernet provide raw power for IP
phones or wireless transceivers on the same wires that
carry the Ethernet data signals without using the detection
algorithms defined by the IEEE. They do this by
connecting a voltage to the center-taps of each trans-
former in their Ethernet interface. The LanScaperPRO
reports this and allows the Network tests to continue.
Resistance Problem
The Power over Ethernet (PoE) load test determined that
if the maximum 15 Watt load was in place in a remote
Powered Device, the voltage drop in the wiring system
would cause the voltage supplied to the device to be
below the IEEE-specified 36 Volts.
LanScaperPRO_User_Guide.book Page 69 Friday, January 25, 2008 1:14 PM