All FDB entries on VLANs having ISC port as a member will be checkpointed to the peer This command is available on all Universal switches supported in this document. 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.