Enterasys IRM2, Руководство пользователя

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Redundancy
7-8 Testing the Circuits
To disable a circuit:
1. Use the drop-down list to display the appropriate circuit in the Current Circuit
text box; note that the current status of the selected circuit (enabled or
disabled) is displayed just below the Current Circuit text box.
2. Click Configure, and drag down to Disable to inactivate the currently
selected circuit. The displayed status for the selected circuit will change to
Disabled.
Testing the Circuits
The circuit test checks the current status of every port link, both primary and
backup, by polling the physical addresses in each circuit’s Polling Addresses list
through each port configured as part of the circuit. This test can be performed at a
pre-determined time or date, or manually at any time.
If the test detects any problems with the ports on a circuit, whether active or
backup, it will list the circuit and its problem ports in the alarm logging facility.
(Refer to the Alarm and Event Handling User’s Guide for your Enterasys
management application for more information.)
The testing begins at each circuit’s currently active port; all ports are tested in
sequence. Once testing is finished, the circuits will be reset so that the port
designated as Primary will become the active port; if the primary port is not
operational, the next operational backup port will be activated.
!
CAUTION
Be sure to physically connect your backup ports once your redundant circuit has been
enabled!
!
CAUTION
If you do not plan to re-enable the circuit, remember that all configured backup ports will
remain disabled by management until they are manually re-enabled using the port menus
from the Chassis View window (in Logical display mode). If you do decide to re-enable
your backup ports, be sure to disconnect redundant network links before doing so, or
multiple data loops will result.
NOTE
A primary port that has failed, then been repaired, is not returned to active status until
the circuit test is run, unless all other backup ports on the circuit have failed in the
interim.