RAD Data comm E1/T1 Router Connections Troubleshooting, IP connection to LAN is Down

Chapter 6 Troubleshooting and Diagnostics FCD-IPMInstallation and Operation Manual

6.3 Router Connections Troubleshooting

The IP router can be connected to other IP networks by the LAN and WAN.

Operating the PING terminal sending PING frames to IP HOST indicates the availability of the connection in IP level. When the PING terminal gets responds continuously from the IP HOST the IP connection is UP.

IP connection to LAN is DOWN

See LAN indicators, VIEW --> INTERFACE CONNECTION and VIEW-->

ROUTING TABLES --> IP ROUTING

Table 6-3. Router Connections Troubleshooting

Trouble symptoms	Possible cause		Recommended Course of Action
LAN error indication ON	1.	LAN status is DISABLE	Check VIEW interface connection
permanently			status.
	2.	Problem with LAN cable or	Check LAN cable and HUB.
	HUB
LAN error indication is blinking	Problem with LAN cable or		Check LAN cable and HUB.
	HUB
Physical connection OK but no	IP configuration problem		Look for mistakes in IP routing table,
IP connection			HOST IP addresses, default gateway.

IP Connection to WAN is DOWN

See WAN indicators, VIEW --> CONFIGURATION , VIEW --> INTERFACE

CONNECTION and VIEW--> ROUTING TABLES --> IP ROUTING

Table 6-4. IP Connection to WAN Troubleshooting

Trouble symptoms	Possible cause	Recommended Course of Action
WAN error indication ON	1. In synchronous link –	Check VIEW configuration – baud
permanently or connection	receive clock (RCLK) is 0 kbps	rate 0 kbps indicates line physical
status shows “sync not obtain”		problem.
	2. WAN Line physical	Check WAN cable and modem.
	Problem.
WAN error indication ON	WAN Line physical Problem	Check WAN cable and modem.
permanently or connection
status shows “sync not obtain”
E1/T1 alarm indicators ON or	E1/T1 physical problem	See E1/T1 troubleshooting.
blinking or connection status
shows E1/T1 alarms
For PPP: connection status	There is physical connection	Check if the unit opposite is ON.
shows “sync not obtain”	but no PPP connection	Check PPP configuration of FCD-IPM
		and the unit opposite.

6-2 Router Connections Troubleshooting