Installation Manual

Tsunami Multipoint Version 1.3 Installation Guide
Make sure that an SU and its directly connected devices are in the same subnet. The subnet address of a
device can be obtained by performing a logical “AND” of the device’s IP address with its subnet mask. A
subnet mask of 255.255.255.0 implies that there are 255 IP addresses within the same subnet.
If the IP address of a PC connected to a SU is not dynamically assigned:
▪ Make sure the PC’s IP address appears in the SU’s static IP list (see “addSUIP Command” in the
Tsunami Multipoint Version 1.3 Reference Manual). Otherwise, if the SU is running in Restricted
mode, the PC cannot access the wireless network.
▪ Configure the PC to point to the SU as its default gateway.
In the latest firmware release, the proxy setting is turned on automatically; do not change this setting.
Tips for Testing VLAN Switching
Before changing the BSU Configuration to VLAN switching, make sure that the BSU and the BSU console
are connected to a VLAN switch. Otherwise, if you turn on VLAN tagging, you cannot talk to the BSU
because the PC hosting the BSU Console cannot send or receive VLAN frames.
Tips for Anyone Operating the PMP Network
When changing back and forth between Bridging mode and IP Routing mode (see “routingMode
Command” in the Tsunami Multipoint Version 1.3 Reference Manual), always remember to manually
clear the ARP table of your PC.
Do not turn off the power of the Base Station Unit “at-will,” because the Base Station Unit might be
saving internal variables or configuration parameters to the flash memory at that moment. Always wait
for a minute after entering an operator command before shutting down the BSU.
Always follow the simple proxy rule and fundamental principles concerning subnets and default gateways
in planning and analyzing the PMP network. A good understanding of basic IP networking is required,
regardless of whether you operate the PMP network in IP Routing or Bridging mode.
If you cannot get the network to work, there is most likely a setup error. Check the network configuration
using the tips above and try again.
Protecting the System
Tsunami Multipoint provides ways to prevent unauthorized users from communicating with the BSU and
SUs. You can password-protect the system to prevent unauthorized access and use the Range Security
option to prevent unauthorized SUs from communicating with a BSU.
Chapter 4. System Diagnostics and Operating Tips 45
CPN 63179 Issue Date: 01/24/03