|
| 1 | +nstat |
| 2 | +=== |
| 3 | + |
| 4 | +nstat 是一个简单的监视内核的 SNMP 计数器和网络接口状态的实用工具。 |
| 5 | + |
| 6 | +## 补充说明 |
| 7 | + |
| 8 | +大多数命令行用户都熟悉 netstat ,这是 net-tools 软件包中的命令。目前新版本中 net-tools 软件包几乎完全被弃用,取而代之的是 ip 命令套件,而 nstat 属于新软件包。 |
| 9 | + |
| 10 | +### 语法 |
| 11 | + |
| 12 | +```s |
| 13 | +nstat [OPTION] [ PATTERN [ PATTERN ] ] |
| 14 | +``` |
| 15 | + |
| 16 | +### 选项 |
| 17 | + |
| 18 | +```shell |
| 19 | +-h:显示帮助信息; |
| 20 | +-V:显示指令版本信息; |
| 21 | +-z:转储零计数器。默认情况下不显示它们; |
| 22 | +-r:清零历史统计; |
| 23 | +-n:不显示任何内容,仅更新历史; |
| 24 | +-a:显示计数器的绝对值; |
| 25 | +-d:以守护进程模式运行并收集统计数据 |
| 26 | +-s:不更新历史; |
| 27 | +-j:JSON格式输出。 |
| 28 | +``` |
| 29 | + |
| 30 | +### 实例 |
| 31 | + |
| 32 | +直接输入以查询网络接口状态,以下展示了 IPv4,IPv6,TCP,UDP,ICMP 的统计数据: |
| 33 | + |
| 34 | +```shell |
| 35 | +nstat |
| 36 | +#kernel |
| 37 | +IpInReceives 769152 0.0 |
| 38 | +IpInAddrErrors 1 0.0 |
| 39 | +IpInDelivers 769146 0.0 |
| 40 | +IpOutRequests 764236 0.0 |
| 41 | +IpOutDiscards 20 0.0 |
| 42 | +IpOutNoRoutes 1 0.0 |
| 43 | +IcmpInMsgs 92 0.0 |
| 44 | +IcmpInDestUnreachs 92 0.0 |
| 45 | +IcmpOutMsgs 94 0.0 |
| 46 | +IcmpOutDestUnreachs 94 0.0 |
| 47 | +IcmpMsgInType3 92 0.0 |
| 48 | +IcmpMsgOutType3 94 0.0 |
| 49 | +TcpActiveOpens 1786 0.0 |
| 50 | +TcpPassiveOpens 142 0.0 |
| 51 | +TcpAttemptFails 11 0.0 |
| 52 | +TcpEstabResets 72 0.0 |
| 53 | +TcpInSegs 756827 0.0 |
| 54 | +TcpOutSegs 802908 0.0 |
| 55 | +TcpRetransSegs 767 0.0 |
| 56 | +TcpOutRsts 702 0.0 |
| 57 | +UdpInDatagrams 12075 0.0 |
| 58 | +UdpNoPorts 82 0.0 |
| 59 | +UdpOutDatagrams 7045 0.0 |
| 60 | +UdpIgnoredMulti 70 0.0 |
| 61 | +Ip6InReceives 5005 0.0 |
| 62 | +Ip6InDelivers 5005 0.0 |
| 63 | +Ip6OutRequests 131 0.0 |
| 64 | +Ip6OutDiscards 2 0.0 |
| 65 | +Ip6OutNoRoutes 959 0.0 |
| 66 | +Ip6InMcastPkts 4999 0.0 |
| 67 | +Ip6OutMcastPkts 125 0.0 |
| 68 | +Ip6InOctets 797462 0.0 |
| 69 | +Ip6OutOctets 16421 0.0 |
| 70 | +Ip6InMcastOctets 797030 0.0 |
| 71 | +Ip6OutMcastOctets 15949 0.0 |
| 72 | +Ip6InNoECTPkts 5005 0.0 |
| 73 | +Icmp6InMsgs 3 0.0 |
| 74 | +Icmp6OutMsgs 51 0.0 |
| 75 | +Icmp6InNeighborAdvertisements 1 0.0 |
| 76 | +Icmp6InMLDv2Reports 2 0.0 |
| 77 | +Icmp6OutRouterSolicits 11 0.0 |
| 78 | +Icmp6OutNeighborSolicits 4 0.0 |
| 79 | +Icmp6OutMLDv2Reports 36 0.0 |
| 80 | +Icmp6InType136 1 0.0 |
| 81 | +Icmp6InType143 2 0.0 |
| 82 | +Icmp6OutType133 11 0.0 |
| 83 | +Icmp6OutType135 4 0.0 |
| 84 | +Icmp6OutType143 36 0.0 |
| 85 | +Udp6InDatagrams 4998 0.0 |
| 86 | +Udp6OutDatagrams 76 0.0 |
| 87 | +TcpExtTW 385 0.0 |
| 88 | +TcpExtPAWSEstab 1 0.0 |
| 89 | +TcpExtDelayedACKs 37133 0.0 |
| 90 | +TcpExtDelayedACKLocked 57 0.0 |
| 91 | +TcpExtDelayedACKLost 456 0.0 |
| 92 | +TcpExtTCPHPHits 417717 0.0 |
| 93 | +TcpExtTCPPureAcks 34186 0.0 |
| 94 | +TcpExtTCPHPAcks 222980 0.0 |
| 95 | +TcpExtTCPSACKReorder 1 0.0 |
| 96 | +TcpExtTCPLossUndo 194 0.0 |
| 97 | +TcpExtTCPLostRetransmit 169 0.0 |
| 98 | +TcpExtTCPSlowStartRetrans 1 0.0 |
| 99 | +TcpExtTCPTimeouts 494 0.0 |
| 100 | +TcpExtTCPLossProbes 309 0.0 |
| 101 | +TcpExtTCPBacklogCoalesce 571 0.0 |
| 102 | +TcpExtTCPDSACKOldSent 281 0.0 |
| 103 | +TcpExtTCPDSACKRecv 281 0.0 |
| 104 | +TcpExtTCPAbortOnData 13 0.0 |
| 105 | +TcpExtTCPAbortOnClose 30 0.0 |
| 106 | +TcpExtTCPDSACKIgnoredOld 1 0.0 |
| 107 | +TcpExtTCPDSACKIgnoredNoUndo 258 0.0 |
| 108 | +TcpExtTCPSackShiftFallback 1 0.0 |
| 109 | +TcpExtTCPRcvCoalesce 18314 0.0 |
| 110 | +TcpExtTCPFastOpenActiveFail 2 0.0 |
| 111 | +TcpExtTCPSpuriousRtxHostQueues 11 0.0 |
| 112 | +TcpExtTCPAutoCorking 1684 0.0 |
| 113 | +TcpExtTCPFromZeroWindowAdv 2 0.0 |
| 114 | +TcpExtTCPToZeroWindowAdv 2 0.0 |
| 115 | +TcpExtTCPSynRetrans 479 0.0 |
| 116 | +TcpExtTCPOrigDataSent 359814 0.0 |
| 117 | +TcpExtTCPHystartTrainDetect 13 0.0 |
| 118 | +TcpExtTCPHystartTrainCwnd 550 0.0 |
| 119 | +TcpExtTCPKeepAlive 18 0.0 |
| 120 | +TcpExtTCPDelivered 361695 0.0 |
| 121 | +TcpExtTCPZeroWindowDrop 1 0.0 |
| 122 | +TcpExtTcpTimeoutRehash 494 0.0 |
| 123 | +TcpExtTcpDuplicateDataRehash 2 0.0 |
| 124 | +TcpExtTCPDSACKRecvSegs 281 0.0 |
| 125 | +IpExtInNoRoutes 3 0.0 |
| 126 | +IpExtInMcastPkts 5392 0.0 |
| 127 | +IpExtOutMcastPkts 221 0.0 |
| 128 | +IpExtInBcastPkts 70 0.0 |
| 129 | +IpExtOutBcastPkts 10 0.0 |
| 130 | +IpExtInOctets 2100280442 0.0 |
| 131 | +IpExtOutOctets 226760631 0.0 |
| 132 | +IpExtInMcastOctets 746608 0.0 |
| 133 | +IpExtOutMcastOctets 27565 0.0 |
| 134 | +IpExtInBcastOctets 5674 0.0 |
| 135 | +IpExtOutBcastOctets 778 0.0 |
| 136 | +IpExtInNoECTPkts 1885871 0.0 |
| 137 | +``` |
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