Efficient Networks SpeedStream 5667 - Manual (Page 49)

SpeedStream Dual USB/Ethernet Router User’s Guide
Model 5667
49
Carrier Not Detected – Not Lit
If the Ethernet LED is not lit, check the connection on the other end of the Ethernet cable.
Carrier Detected - Solid Green
There are conditions in which the Ethernet link will not be operational when the green Ethernet
LED is lit. The Ethernet interface on the host computer or hub connected to the router's Ethernet
port should be set to
half-duplex, no auto-negotiation . Otherwise connectivity problems can arise.
Examining the Ethernet statistics that will indicate a one-sided connection usually can see this.
STEP 2: Test the ATM Circuit
Use the ATM ping command to send OAM loopback cells on the VPI/VCI that you believe is
correct. The Network Service Provider at the other end of your connection will be using a specific
VPI/VCI (often it is set to 8/35). If you think you have the VPI/VCI set properly, you can use
atmping command to send out cells on a different channel to see if there is a response.
STEP 3: Check for IP Routing Problems
IP routing problems usually are the result of something being misconfigured. Check the following
functions:
•
Execute the ping command to see if the destination IP address is alive.
•
Make sure the default route (IP gateway) is defined correctly. It must be on the same
subnetwork as your router.
•
Check to see that there are static routes set up to the specified network.
•
Check whether the Routing Information Protocol (RIP) is supplying information or
supplying erroneous information.
•
If Firewall is enabled, and not snoozing, IP packets will stop at the router depending
upon the level at which the firewall is running. Check the Firewall configuration.
Firewall events are logged to the console.
Connection Problems
If you cannot connect your PC to the target router for configuration:
For a LAN connection, verify that the router’s IP address matches the IP address previously stored into
the router’s configuration. You must have previously set the router’s Ethernet LAN IP address and
subnet mask, 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 pin end is securely plugged in.