In the active state, a router sends queries out to its neighbors requesting a path to the lost route. If, for some reason, a router loses a route through its successor and does not have a feasible successor for that route, then the route transitions to an “active” state. Routes that have a valid successor are said to be in a “passive” state. Conventionsįor more information on document conventions, refer to the Cisco Technical Tips Conventions. If your network is live, make sure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. The information in this document is based on Cisco IOS® Software Release 12.0. There are no specific requirements for this document. To reduce traffic load on the network, EIGRP maintains neighbor relationships and exchanges routing information only as needed, using a query process to find alternate paths when all loop-free paths to a destination have failed. The remaining neighbors with loop-free paths to the destination are called feasible successors. The neighbor (or neighbors) with the best path to a destination is called the successor. It is capable of (conservatively) finding all loop-free paths to any given destination based on route advertisements from neighbors.
#SIA STUCK IN ACTIVE TIMER UPDATE#
Enhanced Interior Gateway Routing Protocol (EIGRP) is an enhanced distance-vector protocol based on the diffusing update algorithm (DUAL).