
Troubleshooting Routers
5-24
Troubleshooting a Token Ring Connection
This section assumes that you have isolated a problem to a Token Ring
connection. If not, refer to Chapter 2 to determine whether these instructions
apply to your problem.
Troubleshoot Token Ring as follows:
1. Filter the log to display only messages from the Token Ring entity
running on the slots experiencing the problem. The Technician Interface
command is
log -fftwid -eTOKEN -s
<slot_no.>
Example
If you are filtering events from Slots 3 and 4, you enter
log -fftwid -eTOKEN -s3 -s4
If Token Ring Debug Event 36 (“Connector MAU<SlotConnector> Ring
Status Change<4_digit_hex_code>)” appears, convert the 4-digit number
from hexadecimal to binary. Assign the position numbers 0 through 10 to the
first 11 digits from left to right. Look for the position number of the “1” bit in
the following list:
• 0 indicates signal loss.
• 1 indicates a hardware error.
• 2 indicates a software error.
• 3 indicates a transmitter beacon.
• 4 indicates a lobe wire fault.
• 5 indicates an automatic removal error.
• 6 is reserved for future use.
• 7 indicates a remove received.
• 8 indicates a counter overflow.
• 9 indicates a single station.
• 10 indicates a ring recovery.
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