MAPD-BD (MAPD Interface Circuit Pack TN802)
Issue 4 May 2002
10-1045555-233-123
Troubleshooting LAN connections
This section contains information for troubleshooting
■ ‘‘External connections to the LAN’’
■ ‘‘Internal connections to the LAN’’
External connections to the LAN
Test the external connections to the LAN by pinging the
■ local host
■ external IP trunk server
■ another device connected to the network:
1. Click Start in Windows (lower lefthand corner), then select Programs, then
Command Prompt.
This starts a DOS command line session.
2. At the command prompt, type ping 127.0.0.1 (the local host default
address) and press
Enter.
If configured correctly, the system displays:
Reply from nnn.nn.nn.nn: bytes=32 time <##ms TTL=###
If there is no reply:
a. Escalate the problem or replace the circuit pack. The problem is not
with the external network but within the circuit pack.
3. At the command prompt, type ping nnn.nn.nn.nn (the external IP trunk
server address) and press
Enter.
If configured correctly, the system displays:
Reply from nnn.nn.nn.nn: bytes=32 time <##ms TTL=###
If there is no reply, verify the IP address and check the physical
connections to and from the TN802 circuit pack.
4. At the command prompt, type ping nnn.nn.nn.nn (the IP address of
another computer on the network) and press
Enter.
If configured correctly, the system displays:
Reply from nnn.nn.nn.nn: bytes=32 time <##ms TTL=###
If there is no reply
a. Verify the IP address
b. Check the physical connections to and from the TN802 circuit pack.
c. Check the internal cables on the TN802 circuit pack (Notes 4 and 6
in Figure 10-67 on page 10-1049).
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