After a route-target change on a county MAC-VRF, remote MACs withdraw from several leaves. What control-plane membership effect explains that?
Select an answer to reveal the explanation.
Short Explanation
Tweaking route targets is like changing which club badges get you into the overlay room—lose the badge match and those MAC/IP routes get shown the door. That withdrawal is expected membership behavior, not an MTU mystery or an underlay protocol conversion.
Full Explanation
EVPN membership is policy-driven through route targets associated with MAC-VRFs/IP-VRFs. Modifying import or export RTs changes which EVPN routes are accepted or advertised; remote MAC/IP entries that no longer match can be withdrawn from the forwarding/control tables. That is expected control-plane behavior, not an SNMP cosmetic effect, underlay protocol rewrite, or direct MTU symptom. Change control for RT policy should include validation of remaining EVPN route import on peer leaves.