User manual

Diagnostics & Troubleshooting
Testing DS3 Redundancy
7-40 July 2004 Wide Bank 28 DS3 - Release 2.4
DS3 Manual Switch Test
1. Verify that a manual switch-over to the secondary Controller can be achieved.
(A:Active)> switch
Switching control to Standby DS3 Controller
(B:Active)>
2. Verify that the test set is still synchronized to the PRBS pattern with a low received-error rate.
Errors here are the direct result of the manual switch-over.
3. Switch-over to the primary DS3 link.
(B:Active)> switch
Switching control to Standby DS3 Controller
(A:Active)>
DS3 Automatic Protection Test
1. Ensure that DS3 protection is on.
(A:Active)> ds3 protect on
ds3 protect on
2. Ensure that revertive switching is off.
(A:Active)> revertive off
revertive off
3. Physically remove the primary Controller card (Controller card A).
4. Verify that a switch-over has occurred to the standby Controller. Prompt should read:
Switching control to Standby DS3 Controller
(B:Active)>