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Maintaining Groups 105
■ Decide whether groups are to perform load balancing:
■ Load balancing groups provide failover and share
the network load.
■ Resilient server link groups provide failover, but do
not share the network load.
■ If you plan to form load balancing/failover groups,
do not enable TCP/IP checksum offload.
■ To use bidirectional load balancing, you must assign a
dedicated IP address for each load balancing group. This
address must be unique (not used elsewhere on the
network).
■ Obtain the slot numbers of the NICs. You need these
numbers if you are installing more than one NIC. See
Obtaining Slot Numbers on page 92 for instructions.
Adding a Secondary NIC to a Group
1 Install the new secondary NIC.
Follow the procedures in Installing and Connecting the NIC
on page 34.
Connect the new secondary NIC to the network that is
used by the group.
2 Make the following changes to the AUTOEXEC.NCF
file:
■ Add or verify the LOAD commands for the LAN
drivers for all slot-frame instances.
■ Load the same protocols and frame types on the
new secondary NIC.
■ Add the slot number of the new secondary NIC to
the LBRSL GROUP command.
3 Reboot the server.
The sample AUTOEXEC.NCF file in the following figure
shows a group of three NICs. The primary NIC in slot 10001
is bound to two secondary NICs in slot 10002 and
slot 10003.