In this section:
The Linux kernel (lksctp) provides global-level statistics for the SCTP and IP, and provides path-level statistics for the SCTP. The SCTP and IP global-level statistics have 21 column names, and the SCTP path-level statistics have a column name that depends on the application. The global-level and path-level statistics have StatsManager counters.
SCTP and IP Global-level Statistics
The SCTP and IP global-level statistics mainly include the total number of packets transmitted, received, and discarded.
The following shows an example of an SCTP_IP_GBL data measurements file:
SCTP and IP Data Measurements File (example))
version=19.0 date ,instance,SCTP PACKETS IN,SCTP PACKETS OUT,SCTP ACTIVE ESTABS,SCTP PASSIVE ESTABS,SCTP ABORTEDS,SCTP SHUTDOWNS,SCTP OUT OF BLUES,SCTP CHECKSUM ERRORS,SCTP OUT CTRL CHUNKS,SCTP OUT ORDER CHUNKS,SCTP OUT UNORDER CHUNKS,SCTP IN CTRL CHUNKS,SCTP IN_ORDER_CHUNKS,SCTP IN_UNORDER_CHUNKS,SCTP FRAG USR MSGS,SCTP REASM USR MSGS,IP IN PACKETS,IP OUT PACKETS,IP IN DISCARDS,IP OUT DISCARDS,IP RX UNKNOWN PROTO 2019-09-24-00:30,slot_12 ,20394 ,17766 ,0 ,0 ,0 ,0 ,20394 ,0 ,20394 ,0 ,0 ,20394 ,0 ,0 ,0 ,0 ,146909 ,140446 ,0 ,0 ,0 2019-09-24-00:30,slot_13 ,2530 ,2530 ,0 ,0 ,0 ,0 ,2530 ,0 ,2530 ,0 ,0 ,2530 ,0 ,0 ,0 ,0 ,569829 ,352323 ,0 ,0 ,0 2019-09-24-00:30,slot_2 ,5373 ,5373 ,0 ,0 ,0 ,0 ,5373 ,0 ,5373 ,0 ,0 ,5373 ,0 ,0 ,0 ,0 ,1008461 ,784770 ,0 ,2176 ,0
The following table outlines the SCTP and the IP global-level statistics in the SCTP_IP_GBL CSV file:
SCTP and IP Global-level Data Measurements
| Statistic | Description |
|---|---|
| SCTP PACKETS IN | Number of IN packets. |
| SCTP PACKETS OUT | Number of OUT packets. |
| SCTP ACTIVE ESTABS | Number of times that associations have directly transitioned from the COOKIE-ECHOED state to the ESTABLISHED state. Upper layer initiates the association attempt. |
| SCTP PASSIVE ESTABS | Number of times that associations have directly transitioned from the CLOSED state to the ESTABLISHED state. Remote endpoint initiates the association attempt. |
| SCTP ABORTEDS | Number of times that associations have directly transitioned to the CLOSED state from any state that uses ABORT. Ungraceful termination of the association. |
| SCTP SHUTDOWNS | Number of times that associations have directly transitioned to the CLOSED state from either the SHUTDOWN-SENT state, or the SHUTDOWN-ACK-SENT state. Graceful termination of the association. |
| SCTP OUT OF BLUES | Number of out of the blue packets the host receives. An out of the blue packet is an SCTP packet that is correctly formed, which includes the proper checksum, but for which the receiver is unable to identify an appropriate association. |
| SCTP CHECKSUM ERRORS | Number of SCTP packets received with an invalid checksum. |
| SCTP OUT CTRL CHUNKS | Number of SCTP control chunks (chunks different from data) sent (not including retransmissions). |
| SCTP OUT ORDER CHUNKS | Number of SCTP ordered data chunks sent (not including retransmissions). |
| SCTP OUT UNORDER CHUNKS | Number of SCTP unordered chunks (data chunks with the U bit set to one) sent (not including retransmissions). |
| SCTP IN CTRL CHUNKS | Number of SCTP control chunks received (no duplicate chunks included). |
| SCTP IN_ORDER_CHUNKS | Number of SCTP ordered data chunks received (no duplicate chunks included). |
| SCTP IN_UNORDER_CHUNKS | Number of SCTP unordered chunks (data chunks with the U bit set to one) received (no duplicate chunks included). |
| SCTP FRAG USR MSGS | Number of user messages that have to be fragmented because of the MTU. |
| SCTP REASM USR MSGS | Number of user messages reassembled, after conversion into data chunks. |
| IP IN PACKETS | Number of incoming IP packets. |
| IP OUT PACKETS | Number of outgoing IP packets. |
| IP IN DISCARDS | Number of incoming IP discard packets |
| IP OUT DISCARDS | Number of outgoing IP discard packets. |
IP RX UNKNOWN PROTO | Number of received unknown protocol packets. |
SCTP Path-level Statistics
The SCTP path-level statistics record the number of path state changes for an endpoint path in an SCTP Association.
The SCTP path-level statistic may have one of the following column names in the /var/stats/* file output, which depends on the application. The column headings for the
- DSC file ADN_SCTP_Path-(5min | 30 min | day)-yyyy-mm-dd is (1) Sctp Num Path State Changes.
- MTP3/DRE file Link_SCTP_Path-(5min | 30 min | day)-yyyy-mm-dd is (1) Link Sctp Num Path State Changes.
- SG file M3UA-Asp_SCTP_Path-(5min | 30 min | day)-yyyy-mm-dd is (1) M3UA ASP Num of Path State Changes.
- SG file SUA-Asp_SCTP_Path-(5min | 30 min | day)-yyyy-mm-dd is (1) SUA ASP Num of Path State Changes.
Note
The default behavior is to generate SCTP Path-level statistics only when there are state changes. To enable creation of the statistics even with no state changes occurring, the Report Zero Stats control must be modified:
- Navigate to the MTP3 main screen.
- Click on Report Stats Configuration.
- Enable Report Zero Stats.
ADN_SCTP_Path
The following shows an example of an ADN_SCTP_Path data measurements file:
ADN_SCTP_Path Data Measurements File (example)
version=19.0 date ,instance ,Sctp Num Path State Changes 2019-09-24-00:30,DSC_1 ADN 1 10.91.4.76,1 2019-09-24-00:30,DSC_1 ADN 1 10.91.4.76,1
The following table outlines the SCTP path-level statistics in the ADN_SCTP_Path CSV file:
ADN_SCTP_Path Statistics
| Statistic | Description |
|---|---|
| SCTP Number Path State Changes | The number of path state changes as detected by a state change for a remote IP address at the socket level. |
Link_SCTP_Path
The following shows an example of a Link_SCTP_Path data measurements file:
Link_SCTP_Path Data Measurements File (example)
version=19.0 date ,instance ,Link Sctp Num Path State Changes 2019-09-24-00:30,LK_7_008.008.008-00_10.91.2.76.1 ,1 2019-09-24-00:30,LK_61_015.015.015-00_10.91.4.75.1,1 2019-09-24-00:30,LK_8_007.007.007-00_10.91.4.75.1 ,1 2019-09-24-00:30,LK_7_008.008.008-00_10.91.4.76.1 ,1 2019-09-24-00:30,LK_61_015.015.015-00_10.91.2.75.1,1 2019-09-24-00:30,LK_8_007.007.007-00_10.91.2.75.1 ,1
The following table outlines the SCTP path-level statistics in the Link_SCTP_Path CSV file:
Link_SCTP_Path Statistics
| Statistic | Description |
|---|---|
| Link SCTP Number Path State Changes | The number of path state changes as detected by a state change for a remote IP address at the socket level. |
M3UA-Asp_SCTP_Path
The following shows an example of an M3UA-Asp_SCTP_Path data measurements file:
M3UA-Asp_SCTP_Path Data Measurements File (example)
version=15.0 date ,instance ,M3UA ASP Num Path State Changes 2019-09-24-00:30,CFG_MA_ASP_3_1_10.91.2.75,1 2019-09-24-00:30,CFG_MA_ASP_3_1_10.91.4.75,1
The following table outlines the SCTP path-level statistics in the M3UA-Asp_SCTP_Path CSV file:
M3UA-Asp_SCTP_Path Statistics
| Statistic | Description |
|---|---|
| M3UA ASP Number Path State Changes | The number of path state changes as detected by a state change for a remote IP address at the socket level. |
SUA-Asp_SCTP_Path
The following shows an example of an SUA-Asp_SCTP_Path data measurements file:
SUA-Asp_SCTP_Path Data Measurements File (example)
version=19.0 date ,instance ,SUA ASP Num Path State Changes 2019-09-24-00:30,CFG_ASP_6_192.168.240.2,1 2019-09-24-00:30,CFG_ASP_5_192.168.240.2,1 2019-09-24-00:30,CFG_ASP_7_192.168.240.2,1
The following table outlines the SCTP path-level statistics in the SUA-Asp_SCTP_Path CSV file:
SUA-Asp_SCTP_Path Statistics
| Statistic | Description |
|---|---|
| SUA ASP Number Path State Changes | The number of path state changes as detected by a state change for a remote IP address at the socket level. |
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