Diagnostics and Troubleshooting
8-10 8000-A2-GB20-20
November 1997
Network Problems
Review the following symptoms and possible solutions to help in solving any
problems you may encounter on the HotWire DSLAM.
PROBLEM: Intranetworking communication problems.
ACTION: 1. Verify that the internetworking network cables meet IEEE
standards for local Ethernet networks.
2. Check cable connections to DSLAM and other devices in
the network.
3. Determine whether or not your system is the only one in the
network with a problem.
PROBLEM: Cannot PING or Telnet after entering IP address.
ACTION: 1. Restart the interface (see
Configuration
→
Interfaces
(A-C)
in Chapter 6).
2. Reset or power cycle before the IP address changes take
effect.
3. Check to see if you entered the correct IP address (see
Who Am I
screen in Chapter 3).
4. Check to see that the IP address is unique and matches the
class of the subnet. (For example, if using a Class B
address, make sure the first two numbers match.)
5. Check to see that the sub-net mask is set correctly. If in
doubt, leave the default sub-net mask (see
Who Am I
screen in Chapter 3).
6. Check to see that the IP next-hop address matches that of
the router (if communicating through IP router) (see
Configuration
→
IP Route
r (A-E) in Chapter 5).
7. Verify that your address, port, or IP protocol is not being
filtered from the port or bridge. (Turn off the filters if you are
not sure.)
8. Check to see that the port in question is forwarding traffic.
9. Check received packets (see
Monitoring
→
Network
Protocol
(B-D) in Chapter 7).