Cabletron Systems CyberSWITCH CSX101, User'S Information Manual

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Troubleshooting
48 CyberSWITCH 100 Advanced User Information
ISDN LINE LED IS OFF/BLINKING SLOWLY
• If the unit has only an S/T interface, a problem is occurring in either the connection to the
external NT1 or the connection to the network. To ensure that an installed NT1 is operating
properly, check the NT1’s operational light. Refer to documentation supplied with the NT1 unit.
• If the unit has a U interface, a problem is occurring in the negotiation to the network.
• Examine the phone line cable for frays. Check that each end is securely plugged in.
• Contact the ISDN service provider to ensure the ISDN line is operational. If you have other
ISDN equipment that is operational, temporarily plug it into the wall jack to verify that the
ISDN line is operational out to the service provider.
ISDN LINE CHANNEL LED IS FAST BLINKING
• The router is having trouble negotiating SPIDs and DNs with the central office.
Investigating Software Configuration Problems
Software problems usually occur when your software configuration contains incomplete or
incorrect information.
CONNECTION TO CyberSWITCH 100 FAILS DURING SOFTWARE CONFIGURATION
• For a LAN connection, verify that the IP address matches the IP address previously stored into
the router’s configuration. You must have previously (through QuickSET) set the Ethernet LAN
IP address and subnet mask, enabled IP routing, saved the Ethernet configuration changes and
rebooted the router for the new IP address to take effect.
• Check that your LAN cable is pinned correctly and each end securely plugged in.
• Make sure that an IP route exists between your local PC and the CyberSWITCH 100. The PC
and CyberSWITCH 100 must be on the same IP subnetwork or the CyberSWITCH 100 must
be reachable through a router on your LAN.
• Check Network TCP/IP properties under Windows 95 or Windows N/T.
• Check if the LAN LED on the CyberSWITCH 100 front panel blinks in response to a “ping”.