Подскажите формулы и условные обозначения

[ana_0907]

Подскажите, пожалуйста, формулы, параметры и условные обозначения:
1) количество правильно принятых пакетов
2) число одиночных ошибок
3) число ошибок в одиночном пакете
4) число пакетных ошибок
5) количество обнаруженных искаженных пакетов

[folk]

мне неизвестны стандарты на эту тему, мне кажется что зависит от автора книги

[ana_0907]

Source of the post
мне неизвестны стандарты на эту тему, мне кажется что зависит от автора книги

Подскажите, пожалуйста, какие-нибудь книги

[folk]

может проще - в линуксе посмотреть в /proc или

Код: Выбрать все

#netstat -s
Ip:
 1823001495 total packets received
 240 with invalid headers
 72476966 with invalid addresses
 0 forwarded
 6 with unknown protocol
 0 incoming packets discarded
 1498254742 incoming packets delivered
 1419891328 requests sent out
 18 fragments dropped after timeout
 76 reassemblies required
 29 packets reassembled ok
 18 packet reassembles failed
Icmp:
 11475275 ICMP messages received
 327527 input ICMP message failed.
 ICMP input histogram:
 destination unreachable: 2233840
 timeout in transit: 5612259
 source quenches: 1
 redirects: 5
 echo requests: 3513150
 echo replies: 577
 timestamp request: 7
 3537528 ICMP messages sent
 0 ICMP messages failed
 ICMP output histogram:
 destination unreachable: 24334
 time exceeded: 4
 echo request: 304
 echo replies: 3512879
 timestamp replies: 7
IcmpMsg:
 InType0: 577
 InType3: 2233840
 InType4: 1
 InType5: 5
 InType8: 3513150
 InType9: 115281
 InType11: 5612259
 InType13: 7
 OutType0: 3512879
 OutType3: 24334
 OutType8: 304
 OutType11: 4
 OutType14: 7
Tcp:
 1379946 active connections openings
 191479973 passive connection openings
 159975 failed connection attempts
 661421 connection resets received
 1 connections established
 1479103744 segments received
 1378862650 segments send out
 43451116 segments retransmited
 11738 bad segments received.
 1307674 resets sent
Udp:
 6629466 packets received
 12227 packets to unknown port received.
 0 packet receive errors
 17464907 packets sent
UdpLite:
TcpExt:
 158250 resets received for embryonic SYN_RECV sockets
 579 ICMP packets dropped because they were out-of-window
 28 ICMP packets dropped because socket was locked
 124219206 TCP sockets finished time wait in fast timer
 176974 packets rejects in established connections because of timestamp
 5673830 delayed acks sent
 6757 delayed acks further delayed because of locked socket
 Quick ack mode was activated 7582577 times
 428460 times the listen queue of a socket overflowed
 428460 SYNs to LISTEN sockets dropped
 328531338 packets directly queued to recvmsg prequeue.
 550723 bytes directly in process context from backlog
 2196397935 bytes directly received in process context from prequeue
 83519377 packet headers predicted
 248470153 packets header predicted and directly queued to user
 398272283 acknowledgments not containing data payload received
 154625670 predicted acknowledgments
 287 times recovered from packet loss due to fast retransmit
 173948 times recovered from packet loss by selective acknowledgements
 133 bad SACK blocks received
 Detected reordering 406 times using FACK
 Detected reordering 333 times using SACK
 Detected reordering 7 times using reno fast retransmit
 Detected reordering 1748 times using time stamp
 4231 congestion windows fully recovered without slow start
 3927 congestion windows partially recovered using Hoe heuristic
 8070 congestion windows recovered without slow start by DSACK
 162496 congestion windows recovered without slow start after partial ack
 136956 TCP data loss events
 TCPLostRetransmit: 7208
 42924 timeouts after reno fast retransmit
 308882 timeouts after SACK recovery
 10650 timeouts in loss state
 299703 fast retransmits
 16362 forward retransmits
 173535 retransmits in slow start
 29750335 other TCP timeouts
 131 classic Reno fast retransmits failed
 13994 SACK retransmits failed
 75 times receiver scheduled too late for direct processing
 967252 DSACKs sent for old packets
 12630 DSACKs sent for out of order packets
 322838 DSACKs received
 830 DSACKs for out of order packets received
 23 connections reset due to unexpected SYN
 64230 connections reset due to unexpected data
 113 connections reset due to early user close
 667736 connections aborted due to timeout
 TCPSACKDiscard: 76
 TCPDSACKIgnoredOld: 67871
 TCPDSACKIgnoredNoUndo: 119041
 TCPSpuriousRTOs: 1062
 TCPSackShiftFallback: 3442330
 TCPDeferAcceptDrop: 62045044
IpExt:
 InMcastPkts: 1149022
 InBcastPkts: 96387390
 InOctets: -1
 OutOctets: -1
 InMcastOctets: 36482364
 InBcastOctets: -1


Под виндами такое тоже есть