RAD Data comm Modular Access Device with Integrated Router 用户手册

FCD-IPM Installation and Operation Manual 

Chapter 6  Troubleshooting and Diagnostics 

 

Router Connections Troubleshooting 

6-3 

For PPP: connection status 

shows “LCP” 

PPP connection establish but 

no IPCP connection 

Check PPP configuration of FCD-IPM 

and the unit opposite. 

For Frame Relay: connection 

status shows “port down” 

There is physical connection 

but no frame relay port UP 

Check connection between modem 

and frame relay switch. 
Check FCD-IPM and switch 
configuration. 

For Frame Relay: link 
connection status shows “port 

UP” and DLCI connection 

shows “DLCI down” 

There is physical connection 
UP and frame relay port UP 

but specific DLCI is down 

Check if the unit opposite the DLCI is 
ON. 
Check FCD-IPM, frame relay switch 

and the opposite unit configuration. 

Physical and logical 

connections are OK but no IP 

connection 

IP configuration problem 

Look for mistakes in IP routing table, 

HOST IP addresses, default gateway.