ZyXEL Communications IES-1248-51 Guia do Utilizador descarregar pdf (Página 569)

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Chapter 70 Troubleshooting

IES-1248-51V User’s Guide

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70.5 100/1000 Ethernet Port Data Transmission

The Ethernet port’s LED is on, but data cannot be transmitted.

70.6 DSL Data Transmission

The DSL link is up, but data cannot be transmitted.

Table 220 Troubleshooting Data Transmission

STEPS CORRECTIVE ACTION

1 Make sure that the Ethernet port has the appropriate mode setting.

2 Make sure that the IES-1248-51V’s IP settings are properly configured.

3 Check the VLAN configuration.

4 Ping the IES-1248-51V from a computer behind the peer Ethernet device.

5 If you cannot ping, check the Ethernet cable and connections between the

Ethernet port and the Ethernet switch or router.

6 Check the switch mode. In daisychain mode, if you have a loop topology and

enable RSTP, it is possible for RSTP to disable Ethernet port 1 (the uplink

port).

Note: It is not recommended to use daisychain mode in a loop topology.

Table 221 DSL Data Transmission Troubleshooting

STEPS CORRECTIVE ACTION

1 Check the switch mode and port isolation settings.

Check to see that the VPI/VCI and multiplexing mode (LLC/VC) settings in the

subscriber’s ADSL modem or router match those of the ADSL port.

If the subscriber is having problems with a video or other high-bandwidth

services, make sure the IES-1248-51V’s ADSL port’s data rates are set high

enough.

2 Check the VLAN configuration.

3 Ping the IES-1248-51V from the computer behind the ADSL modem or router.

4 If you cannot ping, connect a DSL modem to an ADSL port (that is known to

work).

If the ADSL modem or router works with a different ADSL port, there may be

a problem with the original port. Contact the distributor.

5 If using a different port does not work, try a different ADSL modem or router

with the original port.

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