User manual

Page 19
Revision 1.1
AEI Intelligent Technologies
CHAPTER 4. Advanced Server Features
AEI's Gigabit adapters utilize the popular Intel 82546 chipset, which comes with
numerous advance server features built into its architecture. Hardware acceleration
offloads tasks from the host processor including TCP/UDP/IP checksum calculations
and TCP segmentation. IEEE 802.3ad Link aggregation, failover, and load balancing
are offered, Jumbo Frame, VLAN, and other features. The adapter is also fully
compliant with Gigabit EthernetChannel and Fast EtherChannel trunking algorithms.
(switch dependant 802.3ad [LACP] ) See the individual product webpage for more
advanced server features!
PORT AGGREGATION (TRUNKING), FAILOVER, LOAD BALANCING
The Intel 8254x Ethernet Controller used in the AEI Gigabit Ethernet design
supports IEEE 802.3ad (Link Aggregation Control Protocol, and Failover). This
standard requires the user to install “capable switches” in their network topology
to support Link Aggregation, Fast EtherChannel, or Gigabit EtherChannel
technology.
Also compatible with Failover Group utilities contained in Windows, Linux, Solaris
and other operating systems.
HOST (TCP/IP) OFFLOAD FEATURES
1. Transmit TCP Segmentation
Increased throughput and lower CPU utilization. Compatible with large
send offload features found in Windows 2000 and Windows XP.
2. IP, TCP, and UDP checksum off-loading capabilities on RX and TX
Reduced host CPU utilization and higher throughput.
3. Advanced packet filtering
16 exact matched (unicast or multicast)
4096-bit hash filter for multicast frames
Promiscuous (unicast/multicast) transfer mode
Optional filtering of erred frames
4. Descriptor ring management hardware for TX and RX
Optimized fetching and write-back mechanisms for efficient system
memory and PCI bandwidth usage.