Finisar Surveyor 用户手册
4-8
Surveyor
User’s Guide
Module settings are described in the subsections below. Default values for Module
Settings are shown in Table 4-4:
Settings are shown in Table 4-4:
Buffer Size
Portable Surveyor 10/100 Ethernet Analyzer Card and NDIS cards require that a
capture buffer size be set. The buffer size is the amount of system memory that will
be used to save captured data. Buffer sizes can be set between 64KB and 16MB.
capture buffer size be set. The buffer size is the amount of system memory that will
be used to save captured data. Buffer sizes can be set between 64KB and 16MB.
THGm modules have a hardware buffer and do not require system memory for
captured data. The default buffer size is 512KB.
captured data. The default buffer size is 512KB.
Packet Slice (Slicing Size)
All devices support packet slicing. Packet slicing means that a subset of the entire
packet is saved in the capture buffer. You can save the first 32 bytes (Mac layer), the
first 64 bytes (Network layer), the first 112 or 128 bytes (Application layer), or the
full length of the packet.
packet is saved in the capture buffer. You can save the first 32 bytes (Mac layer), the
first 64 bytes (Network layer), the first 112 or 128 bytes (Application layer), or the
full length of the packet.
Packet slicing can be set separately for monitor and capture except for THGm. For
monitor, packet slicing can improve performance when monitoring the entire packet
contents is not required. For capture, packet slicing can save space in the capture
buffer for more packets when analysis of the entire contents of each packet is not
required.
monitor, packet slicing can improve performance when monitoring the entire packet
contents is not required. For capture, packet slicing can save space in the capture
buffer for more packets when analysis of the entire contents of each packet is not
required.
Table 4-4. Default Module Settings
Module Setting
Default Values
Buffer Size
512K
Packet Slicing Size, Capture
Full packet length
Packet Slicing Size, Monitor
Full packet length (for THGm), 128 bytes (for standard NDIS
modules)
modules)
Enable Full Buffer Auto Save
Not selected
Expert Symptoms
All symptoms enabled except TCP checksum errors
Modes: Expert Analysis Mode
Selected (Expert plug-in only)
Modes: Non-WKP Mode
Not selected
Modes: Multi-QoS Only
Not selected (Multi-QoS plug-in only)
Expert Threshold
Each threshold has its own default value
MAC Control Frame
Selected for THGm, not supported by others