User Manual

Configuring SHD Parameter Settings 15
4 In the NIC Properties window, click the Advanced tab.
5 In the Advanced window, you can configure the SHD parameters. Select a
parameter in the Property field and change its value in the Value field. Table 1
describes the SHD parameters. Default values are optimal for most networks.
Windows 2000
1 From the Windows Start menu, select Settings/Control Panel.
2 Double-click the Network icon.
3 In the Network window, click the Adapters tab.
4 Double-click the adapter you want to modify
5 Double-click a parameter to change its value. Table 1 describes the SHD
parameters. Default values are optimal for most networks.
6 When you are finished, click OK.
7 Remove the 3Com EtherLink Server CD from the CD-ROM drive.
8 Restart the computer.
Slot numbers listed in the SHD Configuration window may not match those
labeled on the mother board
Table 1 SHD Parameters (Windows)
Field
Range of Values
(Defaults in Bold)
Description
Self Check
Level
Off, Basic, Enhanced Basic level checking monitors Tx/Rx errors (see
Sampling Window), link beat, and NIC hardware.
Enhanced level adds maintenance of valid data
structures and uses more CPU cycles. Basic level
checking is forced when RSL is enabled. Off disables
SHD.
Sampling
Window
0–65536 packets
0 disables sampling.
1024
This option specifies the number of Tx/Rx packets to
be sampled for carrier lost, late collisions, jabbers,
CRC, overruns, underruns, and bus contention
errors. Setting the Sampling Window to 0 effectively
disables all checking.
Sampling Ratio 0–100 percent
50
Sampling Ratio establishes a rate of error
accumulation. Every second, the error counters are
diminished by the Sampling Ratio. The larger the
Sampling Ratio, the more recent are the
accumulated errors.
Error Tolerance Low
Medium
High
Error Tolerance specifies threshold levels for Tx/Rx
errors. An RSL failover or NIC reset occurs when the
threshold is exceeded during the sampling period.
Low = 5 of each error category
Medium = 50 of each error category
High = 100 of each error category
Alert Type
(Windows NT)
Information
Warning
Error
Double-click to enable or disable alert types. Enabled
types are reported to the Windows System Events
monitor.