Setup & Filter - C1AP Toolset

 

 

Configuring The Features...

These features provides more selectable options for the advanced user working on protocol analysis.

 

 

C1AP models -T/-TF offer these functions in addition to it's common usage as a standard TAP and remains a passive device on the monitored link.
 

Included in:

C1AP-100-T & C1AP-100-TF and C1AP-1G-TF

works with Computers on several OS's:

supports Windows OS supports Linux OS supports OpenSource OS supports Mac OS X
 

Function
The filter mechanic allows to cut down the upstream total traffic right on the place where it happens - at the hardware level. This feature allows better performance, a more specified usage and analysis of the section of data you want to build your troubleshooting on. It may suppress unwanted data or pick out a part you focus on. In all situations these features will give performance to your analyzer versus the usage of filter functions within the software analyzer.
 

Toggle the TimeStamp feature for packet capture, set various filters on the fly or permanently:

 

  

 

Screenshot SetUp & FilterTool

 

CRC error filter - this option allows the decision to keep packets corrupted by a CRC error and exclude them upstream to an Analyzer during your analysis.

 

CRC32 remover - you may consider CRC32 bytes to be useless for any reason, this option allows the TAP to truncate this information from all packets upstream to an Analyzer.

 

TimeStamp feature - see NanoSec for more details 

MAC/IP address & protocol filter - these filters are a straight solution. the filter mechanics may be used on the fly for temporary usage or may be stored permanent.


You decide the filter settings::

 

  • Create an excluding or including filter
  • Combine all filter options to one filter, i.e. protocol type plus one MAC Address plus IP Address (or range).

 

  
 

noteEvery user of Aggregation TAPs should be aware of using up to two times the bandwidth upwards to the Analyzer. The calculation is simple: Linkspeed i.e 100Mbit on TX and RX results at the output of a AggregationTAP a total of 200Mbit (TX+RX in one stream) passed on to a analyzer NIC at a max speed of 100Mbit.This may not be a problem monitored links doing less speeds which end up in a total of 100Mbit upstream but it is a unsafe and tricky situation if packets will be lost an higher data rates.

 


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