dali/bacnet_stack
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added expected max values to mstpcap statistics information.

Browse Source
This commit is contained in:
skarg
2009-08-12 01:26:18 +00:00
parent a854000370
commit e3bcce50ce
1 changed files with 31 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
bacnet-stack/demo/mstpcap/readme.txt
+31 -10
View File
@@ -4,7 +4,8 @@ This tool captures MS/TP packets on an RS485 serial interface,
and saves the packets to a file in Wireshark PCAP format for
the MS/TP dissector to read. The filename has a date and time
code in it, and will contain up to 65535 packets. A new file
will be created at each 65535 packet interval.
will be created at each 65535 packet interval. The tool can
be stopped by using Control-C.
Here is a sample of the tool running (use CTRL-C to quit).
D:\code\bacnet-stack\bin>mstpcap COM3 38400
@@ -19,15 +20,35 @@ MAC MaxMstr Tokens Retries Treply Tusage Trpfm Tder Tpostpd
MS/TP capture tool also includes statistics which are listed for
any MAC addresses found passing a token,
or any MAC address replying to a DER message.
The statistics are emitted when CTRL-C is pressed, or when
The statistics are emitted when Control-C is pressed, or when
65535 packets are captured and the new file is created.
The statistics are cleared when the new file is created.
MaxMstr = highest destination MAC during PFM
Tokens = number of tokens transmitted
Retries = number of second tokens sent to this MAC
Treply = max milliseconds it took to reply with a token after receiving a token
Tusage = max Tusage_delay in milliseconds based on PFM and subsequent token
Trpfm = max milliseconds to respond to PFM with RPFM.
Tder = max milliseconds to respond to DER request with DNER
Tpostpd = max milliseconds to respond to DER request with Reply Postponed.
MaxMstr = highest destination MAC address during PFM
Tokens = number of tokens transmitted by this MAC address.
Retries = number of second tokens sent to this MAC address.
Treply = maximum number of milliseconds it took to reply with
a token after receiving a token. Treply is required to be less
than 25ms (but the mstpcap tool may not have that good of
resolution on Windows).
Tusage = the maximum number of milliseconds the
device waits for a ReplyToPollForMaster or Token retry.
Tusage is required to be between 20ms and 100ms.
Trpfm = maximum number of milliseconds to respond to PFM with RPFM. It is
required to be less than 25ms.
Tder = maximum number of milliseconds that a device takes to
respond to a DataExpectingReply request. Tder is required to be less
than 250ms.
Tpostpd = maximum number of milliseconds to respond to
DataExpectingReply request with ReplyPostponed. Tpostpd is
required to be less than 250ms.
Note that the mstpcap tool may not have that good of
resolution on Windows, so timing under 50ms may not be accurate.