All FDB (forwarding database) entries on VLANs having ISC port as a member will be checkpointed to the peer MLAG (Multi-switch Link Aggregation Group) switch(es). FDB entries learned on an MLAG port will be checkpointed to the corresponding MLAG port on the peer switch. FDB entries on the non-MLAG, non-ISC port will be checkpointed to the corresponding ISC port on the peer switch.