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76 CHAPTER 4: INSTALLING DYNAMICACCESS SOFTWARE IN WINDOWS
Configuring Offloads for a Group of Different NICs
Your computer may contain a combination of installed NICs
(including one or more 3CR990 EtherLink 10/100 PCI NICs
with the 3XP Processor) with varying offload capabilities. If
you have a mix of dissimilar NICs configured in a
DynamicAccess group, then DynamicAccess will support
only those offload functions that are supported by the all
the NICs in the group.
For example, if you have created a group consisting of a
3CR990 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,
DynamicAccess 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.
Installing DynamicAccess LAN Encryption Software
This section explains how to install 3Com DynamicAccess
LAN Encryption software in a PC running Windows 95 or
Windows 98.
For complete instructions on using DynamicAccess LAN
Encryption software, see the DynamicAccess LAN
Encryption Software Administrator’s Guide, which you can
download to your PC hard drive from the EtherCD and view
with a current Internet browser.