Microloops are brief packet loops that occur in the network following a topology change (link down, link up, or metric change
events). Microloops are caused by the non-simultaneous convergence of different nodes in the network. If nodes converge and
send traffic to a neighbor node that has not converged yet, traffic may be looped between these two nodes, resulting in packet
loss, jitter, and out-of-order packets.
The Segment Routing Microloop Avoidance feature detects if microloops are possible following a topology change. If a node
computes that a microloop could occur on the new topology, the node creates a loop-free SR-TE policy path to the destination
using a list of segments. After the RIB update delay timer expires, the SR-TE policy is replaced with regular forwarding paths.