Beta Draft Confidential
Configuring ATM PVCs
About the PVC Tabs
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/0510-29
Reroute Balancing  When this check box is selected (default), the PVC conforms to the 
configured reroute tuning parameters. This means that when the 
PVC reroutes during trunk failure, it will migrate back to its 
original trunk at a rate and time determined by the configured 
reroute tuning parameters. 
When disabled, the PVC ignores the switch tuning parameters. 
For more information, see the Navis EMS-CBGX Getting Started 
Guide. 
Bumping Eligibility If restricted priority routing is disabled, select the check box 
(default) for the non-real time circuit to become active whether or 
not sufficient bandwidth exists. Clear the check box to keep the 
non-real time circuit in retry mode until sufficient bandwidth is 
available. 
If restricted priority is enabled, a non-real time circuit that has been 
bumped remains in retry mode until sufficient bandwidth is 
available, regardless of the Bumping Eligibility setting (Disabled 
or Enabled).
See Appendix E, “Priority Routing,” for more information.
Restricted Priority 
Routing
Select the check box (default) to provision new circuits at the 
lowest bandwidth priority, regardless of configured higher 
bandwidth priority and bumping eligibility settings. 
Clear the check box if you want to use the configured bandwidth 
priority and bumping eligibility settings for newly provisioned 
circuits.
See Appendix E, “Priority Routing,” for more information.
OAM Alarms 
(CBX/GX and ATM 
CS/IWU modules 
only)
Select the check box (default) to use OAM alarms on this circuit. 
Uncheck the box to disable OAM alarms on this circuit. When 
enabled, the switch sends OAM F5 or F4 alarm indication signal 
(AIS) cells out of each UNI logical port endpoint to indicate that 
the circuit is down. 
Note: For a MPVC, this field is set to disabled and cannot be 
changed.
Table 10-5. Add PVC: User Preference Tab Fields (Continued)
Field Action/Description