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Special Forums IP Networking TCP packet with RST flag not carrying DSCP Post 302360274 by Solace on Thursday 8th of October 2009 01:12:34 PM
Old 10-08-2009
TCP packet with RST flag not carrying DSCP

Hello,

I'm having an issue with TCP sockets.
When the TCP connection is terminated on one end, TCP packet with RST flag set is being sent to the sender. All the packets sent so far were carrying the DSCP 'AF21' set by me. But packet with RST flag is carrying DSCP '0'.

Is this expected or should the RST packet also carry the DSCP AF21 ?

Thanks in advance
 

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dscpmk(7ipp)						   IP Quality of Service Modules					      dscpmk(7ipp)

NAME
dscpmk - Differentiated Services Code Point Marker DESCRIPTION
The dscpmk marker is an action module that is executed as a result of classifying or metering packets. It sets a codepoint in the IP header as defined in RFC-2474: Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers. STATISTICS
The dscpmk module exports the following statistics available through kstat: Global statistics: module: dscpmk instance: <action id> name: dscpmk stats class <action name> crtime snaptime npackets <number of packets> epackets <number of packets in error> ipackets <number of packets not processed> dscp_unchanged <number of packets with DSCP unchanged> dscp_changed <number of packets with DSCP changed> Also, for each DSCP the following is exported: module: dscpmk instance: <action id> name: dscpmk_dscp0x<DSCP> value class: <action name> dscp <DSCP value> npackets <number of packets for this DSCP> FILES
/kernel/ipp/sparcv9/dscpmk 64-bit module (SPARC only.) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWqos | +-----------------------------+-----------------------------+ SEE ALSO
ipqosconf(1M), dlcosmk(7IPP), flowacct(7IPP), ipqos(7IPP), ipgpc(7IPP), tokenmt(7IPP), tswtclmt(7IPP) RFC 2474, Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers K. Nichols, S. Blake, F. Baker, D. Black -- The Internet Society, 1998 SunOS 5.10 29 Sep 2004 dscpmk(7ipp)
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