3.6 Congestion Manager for Enum Queries

Congestion handling for ENUM queries done by vENUM. Non-ENUM (DNS) queries are managed by bind9.

Congestion control for ENUM queries has two threshold levels for outgoing messages. An alarm is raised if TPS for incoming messages exceeding Max vENUM TPS on ENUM MP.

ENUM options table has flags for Congestion Notification and Result Code value.

• Congestion Notification Flag for response, indicates whether to generate a response with a Congestion Notification for discarded responses. The valid values are Yes or No.
• Result Code value flag indicates the ENUM error code that the response message should send due to congestion on ENUM application. The range is 5 to 15 and the default value is 5.