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5 Installing 3Com Advanced Server Features For Windows
54
Configuring Offloads for a Group of Different NICs
Your computer may contain a combination of installed NICs (including one or more 3Com
10/100 PCI NICs with the 3XP processor (3C990Bs)) with varying offload capabilities. If
you have a mix of dissimilar NICs configured in a group, then 3Com DynamicAccess
Advanced Server software will support only those offload functions that are supported by
all the NICs in the group.
For example, if you have created a group consisting of a 3C990B NIC and another NIC
that does not have any offload capabilities, then the group will not support any offloads.
In another example, if you have a group of three NICs with two supporting TCP
Checksum, TCP Segmentation, and IPSec offloads, and one supporting only IPSec, then
the group will support only IPSec offloads.
If you add a NIC to an existing group, and that NIC has offload capabilities that differ from
those of the group, then you must reconfigure the group: that is, you must delete the
group, recreate the group, and restart the computer. (If you do not delete and recreate the
group, the Advanced Server software will not bind to the NIC.)
Similarly, if you replace a NIC that has been configured as part of a group with another
NIC that has different offload capabilities, then you must reconfigure the group.
In addition, if you disable or enable any offloads for a group through the Windows 2000
Advanced tab, then you must reconfigure the group.