Diagnostics Help Page

ATM OAM F5 End to End Loop Back

This test sends ATM OAM F5 End to End loop back request cells to the central office equipments through your DSL connection. This test return PASS if response cell is received. Since your service provider might not support this test, your DSL modem could still work even if this test fails.

If this test returns FAIL consistently and your DSL modem seems to not be working, check to make sure the VPI and VCI are configured correctly.

This test returns SKIPPED if the DSL synchronization test failed.

ATM OAM F5 Segment Loop Back

This test sends ATM OAM F5 Segment loop back request cells to the central office equipments through your DSL connection. This test will pass if response cell is received. Since your service provider might not support this test, your DSL modem could still work even if this test fails.

If this test fails consistently and your DSL modem seems to not be working, check to make sure the VPI and VCI are configured correctly.

This test returns FAIL if the DSL synchronization test failed.

Check DSL Synchronization

This test checks your DSL modem to see if it can successfully negotiate and establish a DSL connection with your service provider. The test returns PASS if a DSL connection is established.

If this test returns FAIL, please try the test again a few minutes after this test is completed. Your DSL modem needs a couple of seconds up to a few minutes to establish the DSL connection depending on your phone line quality. If this test returns FAIL, make sure your phone line is connected to your DSL modem securel, and also check with your service provider to see if your service is activated.

If this test returns FAIL, all other tests will be skipped.

Check AAL5 Connection

This test returns PASS if the ATM AAL5 module is loaded correctly in your DSL modem. If this test returns FAIL, an internal error has occured.

This test returns SKIPPED if the DSL synchronization does not return PASS.

Check PPP Connection

This test returns PASS if your login name and password have passed authentication with your service provider.

If this test returns FAIL, run this test again a few minutes after this test is completed, especially if your PPP connection has just been inproperly disconnected. If this test consistently fails, first make sure your login name and password are correct. Remember that login name and password are case sensitive.

This test returns SKIPPED if the "PPPPOE Connection" test does not return PASS and your DSL modem is configured as PPPOE encapsulation.

This test also returns SKIPPED if the "AAL5 Connection" test does not return PASS and your DSL modem is configured for PPPOA encapsulation.

Check PPPOE Connection

This test returns PASS if your DSL modem can see the PPPoE server.

If this test returns FAIL, run this test again a few minutes after this test is completed, especially if your PPPOE connection has just been inproperly disconnected.

If this test consistently return FAIL, make sure PPPOE is the correct configuration as instructed by your service provider, make sure VPI and VCI of the current VC is configured correctly, make sure your service name is configured correctly, and remember that your service name is case sensitive.

This test returns SKIPPED if the "AAL5 Connection" test does not return PASS.

Check IP Assignment

This test returns PASS if your DSL modem has been assigned a valid IP address by your service provider through DHCP or your DSL modem is assigned a valid IP address statically.

If this test returns FAIL, run this test again a few minutes after this test is completed. If this test returns FAIL consistently and DHCP client is enabled on your DSL modem, check with your service provider. If this test returns FAIL consistently and your DSL modem is statically assigned an IP address, make sure the IP address is the correct one assigned by your service provider.

This test returns SKIPPED if the "AAL5 Connection" test does not return PASS.

Ping Gateway

This test returns PASS if the gateway can be reached through a ping request. The gateway is assigned by your service provider, or obtained from your service provider by PPP or DHCP negotiation.

If this test returns FAIL, run this test again a few minutes after this test is completed. If this test returns FAIL consistently and your DSL modem seems not working, check to make sure your statically assigned IP address is configured correctly or the DHCP client is enabled on with the current VC.

This test returns SKIPPED if the "IP Assignment" test does not return PASS.

Ping Host

This test returns PASS if the host specified by your ISP can be reached through a ping request.

If this test returns FAIL, run this test again a few minutes after this test is completed. If this test returns FAIL consistently and your DSL modem seems to not be working, contact your service provider for further information

This test returns SKIPPED if the host name can not be resolved to an IP address.

Ping Primary Domain Name Server

This test returns PASS if the primary DNS can be reached through a ping request. The primary DNS is assigned by your service provider or obtained from your service provider by PPP or DHCP negotiation.

If this test returns FAIL, run this test again a few minutes after this test is completed. If this test returns FAIL consistently and your DSL modem seems to not be working, check to make sure your statically assigned primary DNS IP address is configured correctly or DHCP client is enabled with the current VC.

This test returns N/A if there is no DNS configured.

Query Domain Name Server

This test returns PASS if the host name can be resolved to an IP address though your domain name servers. This test returns FAIL if the host name can not be resolved successfully.

If this test returns FAIL, run this test again a few minutes after this test is completed. If this test returns FAIL consistently and your DSL modem seems to not be working, contact your service provider for further information.