SCTPASOC COMP Report

The per association SCTP layer measurements and reports are shown below.

Command Examples

UI: rept-meas:type=comp:enttype=sctpasoc:aname=assoc1
FTP: rept-ftp-meas:type=comp:enttype=sctpasoc

Measurement Events

Table 3-26 Component SCTPASOC Measurements

Event Name	Description	Unit
ASMAXRTO	SCTP Association Maximum Observed Retransmission Timeout - The maximum observed value of the SCTP state variable Retransmission Timeout (RTO) in milliseconds (ms) for SCTP packets transmitted (but not retransmitted) to the remote peer endpoint’s destination transport address during the measurement interval.	msec
ASOCABTD	SCTP Aborted Associations - The number of times that SCTP associations have made a direct transition to the CLOSED state from any state using the primitive “Abort” (AnyState --Abort--> CLOSED), conveying an ungraceful termination of the association.	peg count
ASOCSHTD	SCTP Association Shutdowns - The number of times that SCTP associations have made a direct transition to the CLOSED state from either the SHUTDOWN-SENT state or the SHUTDOWN-ACK-SENT state, conveying graceful termination of the association.	peg count
CNTLCHKR	SCTP Control Chunks Received - The number of SCTP control chunks received from the remote peer (excluding duplicates). CNTLCHKR register excludes initial SCTP association set-up messages (INIT and COOKIE-ECHO).	peg count
CNTLCHKS	SCTP Control Chunks Sent - The number of SCTP control chunks sent to the remote peer (excluding retransmissions), including ABORT messages, after an association has been formed and the association ID is known (see SCPKTRCV and SCPKTSNT).	peg count
DATCHKRC	Number of SCTP DATA chunks received from the remote SCTP peer (excluding duplicates and discards).	peg count
DATCHKSN	Number of SCTP DATA chunks sent to the remote SCTP peer (excluding retransmissions).	peg count
DURASNEST	Duration the association was not in the Established state.	seconds
ECASNEST	Number of times the association transitioned out of the Established state.	peg count
GAPACKSR	SCTP Gap Acknowledgements Received - The number of Gap Acknowledgement blocks in Selective Acknowledgement (SACK) control chunks received from the remote SCTP peer, indicating gaps in the peer’s received subsequences of DATA chunks as represented by their Transport Sequence Numbers (TSNs). (The inclusion of this measurement is intended to allow network personnel to assess the message-delivery performance of the IPVHSL relative to gap acknowledgment limits, if used as performance criteria for link proving and in-service monitoring.)	peg count
ORDCHKRC	SCTP Ordered Data Chunks Received - The number of SCTP ordered data chunks received from the remote peer (excluding duplicates).	peg count
ORDCHKSN	SCTP Ordered Data Chunks Sent - The number of SCTP ordered data chunks sent to the remote peer (excluding retransmissions).	peg count
PEERFAIL	SCTP Association Peer Endpoint Failures - The number of peer endpoint failure detection events for the association as triggered by the crossing of threshold the association maximum retransmissions.	peg count
RTXCHNKS	SCTP Association Retransmitted Chunks - The number of SCTP data chunks retransmitted to the remote SCTP peer. When T3-rtx expires, the DATA chunks that triggered the T3 timer will be re-sent according with the retransmissions rules. Every DATA chunk that was included in the SCTP packet that triggered the T3-rtx timer must be added to the value of this counter.	peg count
SCOCTRCV	SCTP Packet Octets Received - The number of octets comprising valid SCTP packets received from the remote peer after an association has been formed.	octets
SCOCTSNT	SCTP Packet Octets Sent - The total number of octets comprising SCTP packets submitted to the IP layer for transmittal to the remote peer for a specific association.	octets
SCPKTRCV	SCTP Packets Received - The total number of SCTP packets received from the remote peer that had a valid checksum. Duplicates are included. SCPKTRCV register excludes the pegging of SCTP Packets received when the association ID is unknown (that is, the association parameter "OPEN" has value "NO" for all the links configured on the card; the association ID is known when INITs are received for open server-mode associations or it is established). Also, excludes pegging of ABORT messages.	peg count
SCPKTSNT	SCTP Packets Sent - The total number of SCTP packets sent to the remote peer, i.e., submitted by the local SCTP instance to the IP layer for transmission. Retransmissions are included. The SCPKTSNT register can be pegged as either per card or per association. Association totals exclude initial SCTP association set-up messages (INIT, INIT-ACK, COOKIE ECHO, and COOKIE-ACK) and ABORT messages if the association ID is known (the association ID is known when INITs are received for open server-mode associations or it is established).	peg count
STATUS	Indication of Data Validity: K indicates good data I indicates incomplete interval N indicates data not current	status

UI Output Examples

rept-meas:type=comp:enttype=sctpasoc:aname=assoc1

    stdcfg2b 07-12-31 01:00:04 EST  UNKNOWN 38.0.0-XX.XX.0
    TYPE OF REPORT: COMPONENT MEASUREMENTS ON SCTPASOC
    REPORT PERIOD: LAST
    REPORT INTERVAL:  07-12-31  00:30:00 THRU 00:59:59

    SCTPASOC-COMP MEASUREMENTS: ASSOC: assoc1

    These measurements are from 07-12-31, 00:30:00 through 00:59:59.
    ECASNEST   =         0, DURASNEST  =         0, DATCHKSN   =         0, 
    RTXCHNKS   =         0, DATCHKRC   =         0, SCPKTSNT   =        20,
    SCPKTRCV   =        20, SCOCTSNT   =         0, SCOCTRCV   =         0,
    CNTLCHKS   =       400, ORDCHKSN   =       400, CNTLCHKR   =         0,
    ORDCHKRC   =         0, GAPACKSR   =         0, ASOCABTD   =         0,
    ASOCSHTD   =         0, PEERFAIL   =         0, ASMAXRTO   =         0,

FTP Output Examples

Table 3-27 COMP SCTPASOC Column Headers

Field Name	Description
ASSOC	Association

FTP Example Output File Name:comp-sctpasoc_20071115_1200.csv

FTP Example Output File Format (showing optional 15 minute interval):

"CLLI","SWREL","RPTDATE","RPTIME","TZ","RPTTYPE","RPTPD","IVALDATE","IVALSTART",
"IVALEND","NUMENTIDS"<cr><lf>
"ipmeas","UNKNOWN ??.?.?-58.21.0","2007-08-17","19:30:03","****",
"COMPONENT MEASUREMENTS ON SCTPASOC","LAST","2007-08-17",
"19:15:00","19:30:00",3<cr><lf>
"STATUS","ASSOC","ECASNEST","DURASNEST","DATCHKSN","RTXCHNKS","DATCHKRC","SCPKTSNT",
"SCPKTRCV","SCOCTSNT","SCOCTRCV","CNTLCHKS","ORDCHKSN","CNTLCHKR","ORDCHKRC","GAPACKSR",
"ASOCABTD","ASOCSHTD","PEERFAIL","ASMAXRTO"<cr><lf>
"K","A1101",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0<cr><lf>
"K","A1102",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0<cr><lf>
"K","A1103",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0<cr><lf>

Assuming each data line will be:

4 char status + 18 char association + 18*(6 char data) + 2 = 132 char

For a report of 1000 associations, the typical file size is:

Table 3-28 Typical File Size: comp-sctpasoc.csv

System header	+	Report header	+	Report data	=	File Size
250	+	175	+	132000	=	132425 bytes