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Prestige 324 Intelligent Broadband Sharing Gateway
Troubleshooting
21-1
Chapter 21
Troubleshooting
This chapter covers the potential problems and possible remedies. After each problem
description, some instructions are provided to help you to diagnose and to solve the problem. See
the included CD for further information.
21.1
Problems Starting Up the Prestige
Table 21-1 Troubleshooting the Start-Up of your Prestige
PROBLEM
CORRECTIVE ACTION
None of the LEDs are on when
you power on the Prestige
Check the connection between the AC adapter and the Prestige.
If the error persists, you may have a hardware problem. In this case,
you should contact your vendor.
1. Check to see if the Prestige is connected to your computer’s
console port.
VT100 terminal emulation
9600 bps
Cannot access the Prestige via
the console port.
2. Check to see if the
communications program is
configured correctly. The
communications software should
be configured as follows:
No parity, 8 data bits, 1 stop bit,
data flow set to none.
21.2 Problems with the LAN Interface
Table 21-2 Troubleshooting the LAN Interface
PROBLEM
CORRECTIVE ACTION
Cannot access the Prestige from
the LAN.
Check your Ethernet cable type and connections. Refer to the
Rear
Panel and Connections
section for LAN connection instructions.
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Prestige 324 Intelligent Broadband Sharing Gateway
21-2
Troubleshooting
PROBLEM
CORRECTIVE ACTION
Check the 10M/100M LEDs on the front panel. One of these LEDs
should be on. If they are both off, check the cables between your
Prestige and hub or the station.
Cannot ping any computer on the
LAN.
Verify that the IP addresses and subnet masks of the Prestige and
the computers on the LAN are on the same subnet.
21.3
Problems with the WAN Interface
Table 21-3 Troubleshooting the WAN interface
PROBLEM
CORRECTIVE ACTION
The WAN IP address is provided when the ISP recognizes the user
as an authorized user after verifying the MAC address or Host Name
or User ID.
Find out the verification method used by your ISP.
If the ISP checks the LAN MAC address, tell the ISP the WAN MAC
address of the Prestige. The WAN MAC can be obtained from menu
24.1.
In case the ISP does not allow you to use a new MAC, you can clone
the MAC from the LAN as the WAN MAC and send it to the ISP
using
Menu 2 - WAN Setup
.
If the ISP checks the Host Name, enter host name in the system field
in
Menu 1 - General Setup
when you connect the Prestige to a
cable/xDSL modem.
Cannot get a WAN IP address
from the ISP.
If the ISP checks the User ID, make sure that you have entered the
correct Service Type, User Name and Password in
Menu 4 -
Internet Access Setup
.
Cannot connect to a remote node
or ISP.
Check menu 24.1 to verify the line status. Contact your service
provider if your line remains down.
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Prestige 324 Intelligent Broadband Sharing Gateway
IV
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Appendices and Index
This section provides some Appendices and an Index.
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PPPoE
1
Appendix A
PPPoE
PPPoE in Action
An ADSL modem bridges a PPP session over Ethernet (PPP over Ethernet, RFC 2516) from your PC to an
ATM PVC (Permanent Virtual Circuit) which connects to a xDSL Access Concentrator where the PPP
session terminates (see the next figure). One PVC can support any number of PPP sessions from your LAN.
PPPoE provides access control and billing functionality in a manner similar to dial-up services using PPP.
Benefits of PPPoE
PPPoE offers the following benefits:
1.
It provides you with a familiar dial-up networking (DUN) user interface.
2.
It lessens the burden on the carriers of provisioning virtual circuits all the way to the ISP on multiple
switches for thousands of users. For GSTN (PSTN & ISDN), the switching fabric is already in place.
3.
It allows the ISP to use the existing dial-up model to authenticate and (optionally) to provide
differentiated services.
Traditional Dial-up Scenario
The following diagram depicts a typical hardware configuration where the PCs use traditional dial-up
networking.

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