A storage administrator is extending a Fibre Channel SAN between two data centers 600 km apart using an FCIP tunnel over an existing IP WAN link. Users report that remote tape backup jobs are extremely slow, and analysis shows that each SCSI write command must wait for a status response before the next command is sent, causing the round-trip WAN latency to dominate throughput. Which FCIP feature should the administrator enable to improve backup performance across the tunnel?