Effects of runtime hot-swap of MX304 LMICs on port mirroring

Hot-swapping the MX304 line-card MIC (LMIC) causes the Packet Forwarding Engine to go offline and come back online again. Port mirroring reacts to the hot-swap of LMICs in the following ways:

• If the Packet Forwarding Engine hosting the output mirroring destination interface (MDI) goes offline, traffic from the input mirroring interface is not mirrored. Mirroring resumes when the Packet Forwarding Engine hosting the MDI comes back online.
• In a port-mirroring next-hop-group or next-hop-subgroup scenario, if a Packet Forwarding Engine hosting MDIs goes offline, the MDIs associated with the offline Packet Forwarding Engine are pruned from the member list. Those associated MDIs are added back to the member list when the Packet Forwarding Engine hosting the MDIs comes back online.
• If the Packet Forwarding Engine hosting the mirroring interface goes offline, traffic entering, leaving, and mirrored at the interface stops. Ingress and egress mainline traffic and mirroring resume when the Packet Forwarding Engine hosting the mirroring interface comes back online.