IBM 170 Servers Manual page 65

IBM's Host Ethernet Adapter (HEA) integrated 2-Port 10/100/1000 Based-TX PCI-E IOA supports
checksum offloading, 9000-byte jumbo frames (1 Gigabit only) and LSO - Large Send Offload (IPv4
only). These adapters do not require an IOP to be installed in conjunction with the IOA.
Additionally, each physical port has 16 logical ports that may be assigned to other partitions and
allows each partition to utilize the same physical port simultaneously with the following limitation:
one logical port, per physical port, per partition.
Communications Performance Highlights for IBM i Operation System 6.1:
Additional enhancement in Internet Protocol version 6 (IPv6) in the following areas:
1. Advanced Sockets APIs
2. Path MTU Discovery
3. Correspondent Node Mobility Support
4. Support of Privacy extensions to stateless address auto-configuration
5. Virtual IP address,
6. Multicast Listener Discovery v2 support
7. Router preferences and more specific route advertisement support
8. Router load sharing.
Additional enhancement in Internet Protocol version 4 (IPv4) in the following areas:
1. Remote access proxy fault tolerance
2. IGMP v3 support for IPv4 multicast.
Large Send Offload support was implemented for Host Ethernet Adapter ports on Internet Protocol
version 4 (IPv4).
5.1 System i Ethernet Solutions
The need for communication between computer systems has grown over the last decades, and TCP/IP
over Ethernet has grown with it. We currently have arrived where different factors influence the
capabilities of the Ethernet. Some of these influences can come from the cabling and adapter type
chosen. Limiting factors can be the capabilities of the hub or switch used, the frame size you are able to
transmit and receive, and the type of connection used. The System i server is capable of transmitting and
receiving data at speeds of 10 megabits per second (10 Mbps) to 10 gigabits per second (10 Gbps or
000 Mbps) using an Ethernet IOA. Functions such as full duplex also enhance the communication speeds
and the overall performance of Ethernet.
Table 5.1 contains a list of Ethernet input/output adapters that are used to create the results in this chapter.
Table 5.1
3
CCIN Description
1
2849 10/100 Mbps Ethernet
2
5700 IBM Gigabit Ethernet-SX PCI-X
1
5701 IBM 10/100/1000 Base-TX PCI-X
1
5706 IBM 2-Port 10/100/1000 Base-TX PCI-X
2
5707 IBM 2-Port Gigabit Ethernet-SX PCI-X
1
5767 IBM 2-Port 10/100/1000 Base-TX PCI-e
2
5768 IBM 2-Port Gigabit Ethernet-SX PCI-e
2
573A IBM 10 Gigabit Ethernet-SX PCI-X
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
©
Copyright IBM Corp. 2008
Ethernet input/output adapters
6
Speed
(Mbps)
10 / 100
1000
10 / 100 / 1000
7
10 / 100 / 1000
7
1000
7
10 / 100 / 1000
7
1000
10000
Chapter 5 - Communications Performance
Jumbo Operations Duplex mode capability
frames Console
supported supported
No Yes
Yes No
Yes No
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes No
10
Full Half
Yes Yes
Yes No
Yes Yes
Yes Yes
Yes No
Yes Yes
Yes No
Yes No
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