A Traffic Throttle Group (TTG) is a set of TTPs that share a common Application ID. A TTG is used for diverting transactions away from congested Route Groups (RGs). When a TTG is created and enabled for service, traffic loss is aggregated for the TTPs assigned to the TTG. Transactions are diverted away from congested RGs within a RL by assigning the TTG to a RG within a RL and assigning it a Maximum Loss Percentage Threshold. When the routing application selects a RG from a RL that is assigned an active TTG, it determines whether the TTG's Current Traffic Loss exceeds the RG's Maximum Loss Percentage Threshold. If the threshold is exceeded, that RG is bypassed for routing that transaction.
The routing application can use the congestion information in the TTGs to skip Route Groups in the Route List that do not meet threshold criteria for their congestion status. A typical use for skipping congested Route Groups is to prevent a routing application that cannot handle traffic due to congestion from sending that traffic to a mate routing application that is already equally overloaded.
Note:
Only TTGs that are configured locally can be administratively enabled or disabled by an SOAM. A Shared TTG owned by another site must be disabled at the owning site.You can perform these tasks on an Active System OAM (SOAM).
On the Traffic Throttle Groups [Insert] page, you can add a new Traffic Throttle Group. See Adding Traffic Throttle Groups.
If the maximum number of Traffic Throttle Groups already exists in the system, an error message displays.
See Editing Traffic Throttle Groups.
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