User's Manual

ManualsBrandsAvaya ManualsHandsetsAvaya DECT Messenger with CS1000 Rls 7.0 - Book 1

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Accessing troubleshooting resources 147

Why Does the FP-1600/2000/2010 Have Problems Configuring in

Computers with 2 Ethernet Ports?

Product Group: FieldPoint Hardware

Product Name: FP-1600

Version/Revision: N/A

Problem: In computers that use two ethernet cards, attempts to configure

an FP-1600/2000/2010 sometimes results in the message, no response

from module. I am trying to assign an IP address to my FieldPoint 1600

module. It shows up as Unconfigured, but when I try to assign the IP

address, I see the message Module not responding. What is wrong?

Solution: This can be caused by a variety of factors. First, in a two

ethernet port system, both ports must be configured with mutually

exclusive subnets. There can be no overlap in the subnet addresses of

the two ports; however, even when this is properly configured, there are

frequently problems with configuring the FP-1600/2000/2010.

This is due to a limitation with the Microsoft TCP/IP stack (as tested under

Windows 98 and Windows NT4 SP5). A typical message contains source,

destination, and data information. When sending out broadcast messages,

the Microsoft TCP/IP stack places the same source address in the

messages going out both ports (that is, the address of the first port in the

stack is used), rather than using the appropriate source address for each

port. Thus, an FP-1600/2000/2010 trying to respond to the message is

trying to respond to the wrong port, because that is the address received.

This happens only with broadcast messages. FieldPoint uses broadcast

messages while configuring a module. When the module is configured,

point-to-point messages are used to communicate with the module.

There are several ways to work around the broadcast limitation while

configuring the module.

• Workaround 1: Place the module on the other ethernet card for

configuration.

• Workaround: 2: Use a computer that has only one ethernet card for

configuration.

• Workaround 3: Remove the ethernet drivers for both cards, and then

reinstall the drivers with the board that talks to the FP-1600 being

installed first.

• Workaround 4: If your system uses two plug-in ethernet cards (not

integrated on the computer motherboard), and then swap the positions

of the two cards.

Nortel Communication Server 1000

DECT Messenger Installation and Commissioning — Book 1

NN43120-301 02.01 4 June 2010