Resolution
The DUAL-3-SIA error message indicates that an Enhanced Interior Gateway Routing Protocol (EIGRP) route is in the Stuck In Active (SIA) state. This means that an EIGRP router has not received a reply to a query from one or more neighbors within the time allotted, which is approximately three minutes. When this happens, EIGRP clears the neighbors that did not send a reply, and logs a DUAL-3-SIA error message for the route that went active.
For help in resolving the DUAL-3-SIA error message, refer to What Does the EIGRP DUAL-3-SIA Error Message Mean?.
EIGRP Errors, Warnings, and Log Messages
Seeing routes stuck in active (SIA) error message
