This read-only value reports the interface ID at this node's egress port for this leaf's segment of the corresponding multipoint circuit, i.e., which local interface the leaf's traffic exits on after being received (as reported by cktLeafSrcIfIndex). Together the ingress and egress interface objects let an admin trace the leaf's traffic path completely through this particular switch node, from entry to exit. An engineer verifying that a leaf's traffic is being switched out the correct trunk toward its destination node would check cktLeafEgressIfIndex against the expected egress interface for that path.