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Triggered updates are updates in RIPv2 that are sent in the moment of detecting a change in reachability of a network, rather than waiting for the full Update interval to expire. Connecting or learning about a new network, disconnecting it or learning about its unreachability, or a change to its metric will cause a router to immediately send an advertisement with the updated information. This update commonly carries only the changed network, without listing all other known networks. They continue to be advertised, along with the changed information, in regular intervals driven by the Update timer. In debugs and Cisco documents, ...

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Cover of CCIE Routing and Switching v5.0 Official Cert Guide, Volume 1, Fifth Edition

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