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identified, all ports which were previously turned off are turned back on. The
failing port will be retried once at a pre-determined interval; if beaconing
continues, the port will remain disabled.
Once ABRP is completed, the MicroMMAC-T generates traps to the remote
management workstation which will pinpoint the problem's cause, including:
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You must then enable the faulty module or port before it can be used again. This
prevents a user from rebooting a problem station which may bring the ring down.
To configure the beacon recovery and active monitor settings:
1. In the Network list in the upper right corner of the window, double-click on the
2. Click the mouse on the checkbox associated with the desired function. An X in
3. If you are activating beacon recovery, be sure to configure the # of Ring Port
4. Click on OK.
To change the host error report timer delay:
1. In the Network list in the upper right corner of the window, double-click on the
2. Click on the I-bar cursor in the Host Error Report Timer Delay text box.
3. In the resulting window, type in the desired delay time between the recording
4. Click on OK.
Enable Ring Poll Recovery
The Ring Poll Recovery option allows you to control the way each of the
MicroMMAC-T management stations will respond when one or more stations
stop participating in the ring polling process, which can prevent certain stations
from inserting into the ring. When this option is enabled, the MicroMMAC-T will
detect ring poll failures and remove the offending stations from the ring. Ring poll
failure detection is based on the Neighbor Notification MAC frame (NNI)
transmitted by the Active Monitor. Upon receipt of four consecutive NNI frames,
the MicroMMAC-T will compare the information in the NNI frame with the ring's
Managing the Hub
the beaconing adapter's address
its NAUN address
beacon type
port(s) and/or module(s) bypassed
duration that the ring beaconed
Network 1 selection.
the checkbox means that the selected function is activated.
Retries and the Retry Interval (in seconds) by clicking on the appropriate
I-bar cursor and entering the desired value in the resulting window. Allowable
values for # of Ring Port Retries are 0 - 100 and 999, where 0 will disable
retries, 1-100 will set the number of retries, and 999 will retry the port
indefinitely.
Network 1 selection.
and the reporting of an error.
The MicroMMAC-T Chassis View
2-17
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