Cabletron Systems SEHI-22/24 - Manual (Page 49)

Monitoring Redundancy 4-5
Repeater Redundancy
different port to be Primary or Active, the original Primary or Active port
automatically resets to Backup/Inactive.
6. Once you have configured all the ports that compose the redundant circuit,
enable the circuit by clicking
.
To clear the settings in one circuit, highlight the Circuit Name that you want to
clear, and click on
.
To clear all redundancy configurations, click on in the All Circuits
portion of the window. Reset does the following:
• Deletes all entries in the Circuit Addresses box
• Changes the status of every Circuit to Disabled
• Reverts to previous Circuit Name(s)
• Clears all module and port entries
Monitoring Redundancy
Once you have configured your redundant circuits, you can use the fields in the
All Circuits box to set the parameters that the SEHI uses to periodically test each
of the circuits. The SEHI automatically polls all enabled circuits through the
Primary port and all Backup ports at the time specified in the Test Time box. If the
first poll fails (results in a no link condition with all of the circuit IP addresses), the
SEHI checks the circuit’s Retries field. If Retries is greater than 0, the SEHI waits
the number of seconds specified in the Poll Interval field, and then polls the
circuit again.
To set the Poll Interval:
NOTE
All backup ports will be disabled as soon as you enable the redundant circuit. The ports
remain disabled until they become active due to primary port failure. If you disable the
redundant circuit, you must manually enable each backup port in that circuit.
NOTE
Be sure to make all physical connections to the backup ports once the redundant circuit
has been configured and enabled.
NOTE
After clearing redundancy settings by either method, backup ports remain disabled until
you manually reenable them so that data loops do not occur. Before you enable the ports,
disconnect their physical connections.