3Com 3C886 User Guide - Page 88

Symptoms, Causes, and Solutions, Service, Providers, Internet, Connection, Workstations, Select

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88 CHAPTER 8: TROUBLESHOOTING AND MAINTENANCE Table 8 Symptoms, Causes, and Solutions Symptom Sending SMTP mail is slow. Although multiple service providers are configured, all calls are going to the same service provider which is a private network Possible Cause Solution Only one workstation to one server is supported at one time for SMTP mail. If more than one workstation starts an SMTP mail session to the same remote server at the same time, the mail transfer rate for each additional workstation will be slowed. You may not have configured the From the 56K LAN Modem's home page, click Service IP address and the subnet mask Providers and then select the private network profile in the Private Network you already configured. Enter the IP address and the Parameters window. subnet mask for the private network. The Windows 95 "Connect To" window opens upon launching a Web browser. Dial-Up Networking is setup for use with a serial port modem. To bypass the "Connect To" window: 1 Double-click the Internet control panel. 2 Click the Connection tab. 3 Check the "Connect to the Internet using a local area network" radio button. 4 Click OK. This allows all outgoing connections to run directly through your LAN Modem. ALERT LED remains lit An internal failure. Notify your reseller or technical support that the 56K LAN Modem has failed the self-test. ALERT LED continues to flash Self test failure or LAN Modem is in firmware download mode Power cycle the LAN Modem. If the ALERT LED continues to flash, the ISDN LAN Modem has failed the self test. Contact your network supplier. If the ALERT LED is not flashing, then the LAN Modem is now operating correctly. ALERT LED continues to fast flash. This may occur as a result of replacing a workstation on the LAN with a new computer. The DHCP server has issued all of the available IP addresses, and is unable to fulfill a request for a new IP address. From another computer attached to the LAN Modem, go to the LAN Modem's main configuration page. Click Workstations. Select the name of computer you removed and then click Select. Click Release Workstation Entry. Reboot the workstation. The newlyadded workstation can now be assigned an IP address. When the handset of a The telephone line cable, power telephone attached to the 56K cable and/or phone cable may LAN Modem is lifted, a dial not be firmly connected. tone cannot be heard. Check all cables and connectors to ensure that they are inserted securely. Telephone cable may not be inserted into the correct port. Ensure that the incoming analog telephone line has been connected the port labeled "LINE" on the LAN Modem's back panel. A data call may be in progress. Disconnect any data calls currently in progress. CD LED does not remain green. The user name and/or password Make sure that the user name and password for this for this service provider may not service provider are entered accurately on the Service be entered properly. Provider page. A connection has been There is an interoperability Make sure that the local and remote data applications established (CD LED remains lit) mismatch between the local and have communications capability and are properly but data cannot be sent. remote applications. configured. (continued)

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88
C
HAPTER
8: T
ROUBLESHOOTING
AND
M
AINTENANCE
Sending SMTP mail is slow.
Only one workstation to one
server is supported at one time
for SMTP mail.
If more than one workstation starts an SMTP mail
session to the same remote server at the same time,
the mail transfer rate for each additional workstation
will be slowed.
Although multiple service
providers are configured, all
calls are going to the same
service provider which is a
private network
You may not have configured the
IP address and the subnet mask
in the Private Network
Parameters window.
From the 56K LAN Modem’s home page, click
Service
Providers
and then select the private network profile
you already configured. Enter the IP address and the
subnet mask for the private network.
The Windows 95 “Connect
To” window opens upon
launching a Web browser.
Dial-Up Networking is setup for
use with a serial port modem.
To bypass the “Connect To” window:
1
Double-click the
Internet
control panel.
2
Click the
Connection
tab.
3
Check the “Connect to the Internet using a local
area network” radio button.
4
Click
OK.
This allows all outgoing connections to run directly
through your LAN Modem.
ALERT LED remains lit
An internal failure.
Notify your reseller or technical support that the 56K
LAN Modem has failed the self-test.
ALERT LED continues to flash
Self test failure or LAN Modem is
in firmware download mode
Power cycle the LAN Modem. If the ALERT LED
continues to flash, the ISDN LAN Modem has failed the
self test. Contact your network supplier. If the ALERT
LED is not flashing, then the LAN Modem is now
operating correctly.
ALERT LED continues to fast
flash.
This may occur as a result of
replacing a workstation on the
LAN with a new computer.
The DHCP server has issued all
of the available IP addresses, and
is unable to fulfill a request for a
new IP address.
From another computer attached to the LAN Modem,
go to the LAN Modem’s main configuration page.
Click
Workstations
. Select the name of computer you
removed and then click
Select
. Click
Release
Workstation Entry
. Reboot the workstation. The newly-
added workstation can now be assigned an IP address.
When the handset of a
telephone attached to the 56K
LAN Modem is lifted, a dial
tone cannot be heard.
The telephone line cable, power
cable and/or phone cable may
not be firmly connected.
Check all cables and connectors to ensure that they are
inserted securely.
Telephone cable may not be
inserted into the correct port.
Ensure that the incoming analog telephone line has
been connected the port labeled “LINE” on the LAN
Modem’s back panel.
A data call may be in progress.
Disconnect any data calls currently in progress.
CD LED does not remain green.
The user name and/or password
for this service provider may not
be entered properly.
Make sure that the user name and password for this
service provider are entered accurately on the Service
Provider page.
A connection has been
established (CD LED remains lit)
but data cannot be sent.
There is an interoperability
mismatch between the local and
remote applications.
Make sure that the local and remote data applications
have communications capability and are properly
configured.
(continued)
Table 8
Symptoms, Causes, and Solutions
Symptom
Possible Cause
Solution