Beta Draft Confidential
Configuring ATM PVCs
VC Overload Control
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/0510-7
About Overload Severity Levels
The overload severity level for a card is displayed on the View Card Attributes dialog
box. Overload severity levels are different on the CBX 500 and GX 550 switches and
vary depending on the service requests currently running on the switch. At each
severity level, a certain percentage of the following service requests are shed:
• SVC originations
• PVC originations
• PVC routing
• SVC routing
• PVC reroutes
• Circuit tear downs
The highest overload severity level is 100, where the card is in the highest overload
condition and an application must shed all new service requests. The lowest overload
severity level is 1.
An overload severity level of zero (0) indicates that there is currently no overload
condition on the card.
For more information on viewing the Overload Control Setting and the Overload
Security Level, see the chapter 17 of the Switch Diagnostics User’s Guide for CBX
3500, CBX 500, GX 550, and B-STDX 9000.
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