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to remove the fault, the TRMM/TRMMIM begins a second process based
on a physical search of the hub.
During the second step, the TRMM/TRMMIM individually bypasses each
module to isolate the one with the fault (as evidenced by ring recovery on
bypass). When the module with the fault is identified, the module is
reinserted, and the ports are turned off one by one until the ring recovers
again. The last port turned off is considered the failing port. All previously
turned off ports are turned back on.
Once ABRP is completed, the TRMM/TRMMIM generates traps to the
remote management station on the network which will pinpoint the
problem's cause, including:
•
the beaconing adapter's address
•
its NAUN address
•
beacon type
•
port(s) and/or module bypassed
•
duration that the ring beaconed
The network manager must then enable the faulty port before it can be used
again. This prevents a user from rebooting a problem station which may
bring the ring down.
4.1.6 Number of Retries
This field lets you specify the number of times you want the
TRMM/TRMMIM to retry enabling a port disabled during a beaconing
situation.
The factory-set default value for the Number of Retries field is 4. Selection
values are described as follows:
•
0
Disable ring port retries
•
1-100
Retry ring port n times
•
999
Infinite retries
•
101-998
Not accepted
THE DEVICE SETUP MENU
4-7
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