Lantronix N-GXE-xx-02 Series N-GXE-xx-02 Series User Guide Rev C - Page 17

Lantronix N-GXE-xx-02 User Guide Jumbo Frames Jumbo Frames are Ethernet frames larger than 1518 bytes. Jumbo Frames can be used to reduce server CPU utilization and increase throughput. Note, however, that using Jumbo Frames may introduce latency. Also, end-to-end network devices must support Jumbo Frames, otherwise packets will be dropped. Jumbo Frames also require compatible switch connections that can forward Jumbo Frames; see the switch user guide or contact your network administrator. Jumbo Frames supported protocols include TCP and UDP only. The N-GXE-xx-02 supports Jumbo Frames up to 9014 bytes. TCP Segmentation Offload (up to 256 Kb) This networking technology helps transfer the workload from the CPU to a network adapter during network data transfer. In Windows Server 2008, TCP Segmentation Offload enables the Windows networking subsystem to offload the processing of a TCP/IP connection to a network adapter that includes special support for TCP/IP offload processing. TCP Segmentation Offload is available in all versions of Windows Server 2008 and Windows Vista. TCP Segmentation Offload will work only if it is enabled in both locations. IPv6 support for IP/TCP and IP/UDP RX Checksum Offload When enabled, the checksum is calculated by the NIC instead of the system CPU. This reduces CPU load and can improve system performance in high-traffic environments. There is typically no need to disable checksum offload. Fragmented UDP Checksum Offload for Packet Reassembly When enabled, the checksum is calculated by the NIC instead of the system CPU. This reduces CPU load and can improve system performance in high-traffic environments. There is typically no need to disable checksum offload. PXE Boot This specification describes a standardized client-server environment that boots a software assembly, retrieved from a network, on PXE-enabled clients. On the client side it requires only a PXE-capable NIC and uses a small set of industry-standard network protocols. UEFI Boot The Unified Extensible Firmware Interface (UEFI) specification defines a software interface between an OS and platform firmware. UEFI replaces the BIOS firmware interface originally present in all IBM PCcompatibles. Most UEFI firmware implementations provide legacy support for BIOS services. The Unified EFI Forum is the industry body that manages the UEFI specification. Smart Load Balancing (SLB) and Failover In a Smart Load Balance and Failover team, a standby member handles the traffic if all of the load balance members fail (considered a failover event). All load balance members must fail before the standby member takes over. When one or more of the load balance members is restored (fallback), the restored team member(s), resume handling traffic. 33748 Rev. C https://www.lantronix.com/ 17