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Table 9. Ethernet RJ-45 connector pin-number assignments..
Pin
Signal
1
Transmit data+
2
Transmit data-
3
Receive data+
4
Not connected
Configuring the Ethernet controllers
When you connect your appliance server to the network, the Ethernet controllers
automatically detect the data-transfer rate (10Mbps or 100Mbps) on the network and
then set the controllers to operate at the appropriate rate. In addition, if the Ethernet
ports that your appliance server is connected to support auto-negotiation, the
Ethernet controllers will set the appropriate duplex state. That is, the Ethernet
controllers will adjust to the network data rate, whether the data rate is standard
Ethernet (10BASE-T), Fast Ethernet (100BASE-TX), half duplex (HDX), or full duplex
(FDX). The controllers support half-duplex (HDX) and full-duplex (FDX) modes at both
speeds.
High-Performance Ethernet Modes
Your Ethernet controllers support optional modes, such as teaming, priority packets,
and virtual LANs, which provide higher performance and throughput for your
appliance server.
Teaming Mode: Your Ethernet controllers provide options, called teaming options.
These options increase throughput and fault tolerance.
•
Adapter fault tolerance (AFT) provides automatic redundancy for your adapter.
If the primary adapter fails, the secondary adapter takes over. Adapter fault
tolerance supports from two to four adapters per team.
•
Adaptive load balancing (ALB) enables you to balance the transmission data
flow among two to four adapters. ALB also includes the AFT option. You can use
ALB with any 100BASE-TX switch.
•
Cisco Fast EtherChannel (FEC) creates a team of two to four adapters to
increase transmission and reception throughput. FEC also includes the AFT
option. You can use FEC only with a switch that has FEC capability.
Teaming requires you to install both integrated Ethernet controllers. For additional
information about the teaming modes, see the documentation that comes with these
additional adapters.
Priority Packet mode: Priority Packet is a traffic-prioritization utility that enables you
to set up filters to process high-priority traffic before normal traffic. You can send
information from critical nodes or applications with an indicated priority. Because you
set this priority at the host or entry point of the network, the network devices can base
forwarding decisions on priority information defined in the packet.
Priority Packet information is available on the IBM Networking Web site at
http://www.ibm.com/networking/support on the World Wide Web.
Priority Packet prioritizes traffic based on priority filters. These are parameters you
assign to outgoing (transmit) packets. Using the Priority Filter wizard, you can set up
predefined or custom priority filters based on a node (MAC) address, Ethernet type, or
by various properties of the protocol and port. Priority Packet provides two different
methods for prioritizing traffic: IEEE 802.1p tagging and High Priority Queue.
Pin
Signal
5
Not connected
6
Receive data -
7
Not connected
8
Not connected
Chapter 6. Installing options
77
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