系统版本
cat /proc/version
Linux version 2.6.27.19-5-pae (geeko@buildhost) (gcc version 4.3.2 [gcc-4_3-branch revision 141291] (SUSE Linux) ) #1 SMP 2009-02-28 04:40:21 +0100
ls /proc/net/
arp dev_mcast ip_mr_vif netlink psched route snmp stat udp wireless
connector igmp mcfilter netstat ptype rt_acct sockstat tcp udplite
dev ip_mr_cache netfilter protocols raw rt_cache softnet_stat tr_rif unix
详细介绍:
/proc/net/arp
IP address HW type Flags HW address Mask Device
192.168.1.151 0x1 0x2 00:e0:4c:19:1a:98 * eth0
192.168.1.1 0x1 0x2 00:14:78:e7:c4:e8 * eth0
每个网络接口的arp表中dev包的统计
IP address：IP地址（直连）
HW type：硬件类型
23=0x17 strip (Metricom Starmode IP)
01=0x01 ether (Ethernet)
15=0xf dlci (Frame Relay DLCI)
Flags：
HW address：MAC 地址
Mask：
Device：所在网络接口
/proc/net/dev
Inter-| Receive bytes packets errs drop fifo frame
face | compressed multicast
lo: 238306 4170 0 0 0 0 0 0
eth0: 885217 2782 0 0 0 0 0 0
pan0: 0 0 0 0 0 0 0 0
tap0: 4092 46 0 0 0 0 0 0
| Transmit
|bytes packets errs drop fifo colls carrier compressed
238306 4170 0 0 0 0 0 0
3581505 19730 0 0 0 0 0 0
0 0 0 0 0 0 0 0
5644 38 0 0 0 0 0 0
网络设备的统计
/proc/net/dev_mcast
2 eth0 1 0 01005e0000fb
2 eth0 1 0 01005e000001
5 tap0 1 0 01005e0000fb
5 tap0 1 0 01005e000001
组播包统计
/proc/net/igmp
Idx Device : Count Querier Group Users Timer Reporter
1 lo : 0 V3
010000E0 1 0:00000000 0
2 eth0 : 2 V3
FB0000E0 1 0:00000000 0
010000E0 1 0:00000000 0
5 tap0 : 2 V3
FB0000E0 1 0:00000000 0
010000E0 1 0:00000000 0
IGMP 分组情况
/proc/net/netlink
sk Eth Pid Groups Rmem Wmem Dump Locks
cedaae00 0 2527 00000111 0 0 00000000 2
cec2a400 0 0 00000000 0 0 00000000 2
cdc8da00 7 0 00000000 0 0 00000000 2
cef32400 9 0 00000000 0 0 00000000 2
ce000c00 9 2482 00000000 0 0 00000000 2
cecb8400 10 0 00000000 0 0 00000000 2
cecaaa00 11 0 00000000 0 0 00000000 2
cf832600 15 542 00000001 0 0 00000000 2
cec5fe00 15 0 00000000 0 0 00000000 2
cecaa800 16 0 00000000 0 0 00000000 2
cddd8a00 18 0 00000000 0 0 00000000 2
netlink套接口的信息
/proc/net/netstat
TcpExt: SyncookiesSent SyncookiesRecv SyncookiesFailed EmbryonicRsts PruneCalled RcvPruned OfoPruned OutOfWindowIcmps LockDroppedIcmps ArpFilter TW TWRecycled TWKilled PAWSPassive PAWSActive PAWSEstab DelayedACKs DelayedACKLocked DelayedACKLost ListenOverflows ListenDrops TCPPrequeued TCPDirectCopyFromBacklog TCPDirectCopyFromPrequeue TCPPrequeueDropped TCPHPHits TCPHPHitsToUser TCPPureAcks TCPHPAcks TCPRenoRecovery TCPSackRecovery TCPSACKReneging TCPFACKReorder TCPSACKReorder TCPRenoReorder TCPTSReorder TCPFullUndo TCPPartialUndo TCPDSACKUndo TCPLossUndo TCPLoss TCPLostRetransmit TCPRenoFailures TCPSackFailures TCPLossFailures TCPFastRetrans TCPForwardRetrans TCPSlowStartRetrans TCPTimeouts TCPRenoRecoveryFail TCPSackRecoveryFail TCPSchedulerFailed TCPRcvCollapsed TCPDSACKOldSent TCPDSACKOfoSent TCPDSACKRecv TCPDSACKOfoRecv TCPAbortOnSyn TCPAbortOnData TCPAbortOnClose TCPAbortOnMemory TCPAbortOnTimeout TCPAbortOnLinger TCPAbortFailed TCPMemoryPressures TCPSACKDiscard TCPDSACKIgnoredOld TCPDSACKIgnoredNoUndo TCPSpuriousRTOs TCPMD5NotFound TCPMD5Unexpected
TcpExt: 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 555 145 2 0 0 0 0 0 0 3029 0 10463 1848 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 2 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0
IpExt: InNoRoutes InTruncatedPkts InMcastPkts OutMcastPkts InBcastPkts OutBcastPkts
IpExt: 0 0 30 36 79 0
网络流量的多种统计
/proc/net/raw
sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops
原始套接口的套接口表
/proc/net/route
Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
tap0 000010AC 00000000 0001 0 0 0 00FFFFFF 0 0 0
eth0 0001A8C0 00000000 0001 0 0 0 00FFFFFF 0 0 0
eth0 0000FEA9 00000000 0001 0 0 0 0000FFFF 0 0 0
lo 0000007F 00000000 0001 0 0 0 000000FF 0 0 0
eth0 00000000 0101A8C0 0003 0 0 0 00000000 0 0 0
静态路由表
/proc/net/rt_cache
Iface Destination Gateway Flags RefCnt Use Metric Source MTU Window IRTT TOS HHRef HHUptod SpecDst
lo FF01A8C0 FF01A8C0 94000000 0 0 0 9701A8C0 0 0 0 00 -10 C901A8C0
eth0 9701A8C0 9701A8C0 0 2 1 0 C901A8C0 1500 0 0 10 20 C901A8C0
lo C901A8C0 C901A8C0 84000000 0 185 0 9701A8C0 0 0 0 00 -10 C901A8C0
路由缓存表
/proc/net/snmp
Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails FragOKs FragFails FragCreates
Ip: 2 64 17123 0 13 0 0 0 17110 24061 0 0 0 0 0 0 0 0 0
Icmp: InMsgs InErrors InDestUnreachs InTimeExcds InParmProbs InSrcQuenchs InRedirects InEchos InEchoReps InTimestamps InTimestampReps InAddrMasks InAddrMaskReps OutMsgs OutErrors OutDestUnreachs OutTimeExcds OutParmProbs OutSrcQuenchs OutRedirects OutEchos OutEchoReps OutTimestamps OutTimestampReps OutAddrMasks OutAddrMaskReps
Icmp: 34 0 10 0 0 0 0 0 24 0 0 0 0 34 0 10 0 0 0 0 24 0 0 0 0 0
IcmpMsg: InType0 InType3 OutType3 OutType8
IcmpMsg: 24 10 10 24
Tcp: RtoAlgorithm RtoMin RtoMax MaxConn ActiveOpens PassiveOpens AttemptFails EstabResets CurrEstab InSegs OutSegs RetransSegs InErrs OutRsts
Tcp: 1 200 120000 -1 6 6 2 2 4 16956 23979 2 0 3
Udp: InDatagrams NoPorts InErrors OutDatagrams RcvbufErrors SndbufErrors
Udp: 30 10 0 40 0 0
UdpLite: InDatagrams NoPorts InErrors OutDatagrams RcvbufErrors SndbufErrors
UdpLite: 0 0 0 0 0 0
snmp agent的ip/icmp/tcp/udp协议统计
/proc/net/sockstat
sockets: used 556
TCP: inuse 9 orphan 0 tw 0 alloc 10 mem 2
UDP: inuse 5 mem 0
UDPLITE: inuse 0
RAW: inuse 0
FRAG: inuse 0 memory 0
使用的tcp/udp/raw/pac/syc_cookies的数量
/proc/net/tcp
sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode
0: 00000000:10E1 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 63205 1 c91b0500 300 0 0 2 -1
1: 00000000:006F 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 5253 1 ce47aa40 300 0 0 2 -1
2: 00000000:0016 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 7799 1 ce4a3a80 300 0 0 2 -1
3: 0100007F:0277 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 6509 1 ce47a0c0 300 0 0 2 -1
4: 0100007F:0019 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 7392 1 ce47a580 300 0 0 2 -1
5: C901A8C0:0016 9701A8C0:0B64 01 00000034:00000000 01:00000022 00000000 0 0 16290 4 c91b09c0 35 4 3 5 4
6: 0100007F:10E1 0100007F:91DE 01 00000000:00000000 00:00000000 00000000 0 0 63427 1 c91b0040 21 4 29 3 -1
7: C901A8C0:0016 9701A8C0:066B 01 00000000:00000000 02:000497D5 00000000 0 0 12401 2 ce4a35c0 31 4 16 5 4
8: 0100007F:91DE 0100007F:10E1 01 00000000:00000000 00:00000000 00000000 0 0 63426 1 c90a1a00 22 4 30 3 -1
TCP连接的套接口
/proc/net/udp
sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops
3: 00000000:9883 00000000:0000 07 00000000:00000000 00:00000000 00000000 104 0 6195 2 ce437700 0
24: 00000000:0298 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 5252 2 ce437b80 0
105: 00000000:14E9 00000000:0000 07 00000000:00000000 00:00000000 00000000 104 0 6194 2 ce437940 0
111: 00000000:006F 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 5220 2 ce437dc0 0
119: 00000000:0277 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 6526 2 ce437040 0
UDP连接的套接口表
/proc/net/unix
c9113580: 00000003 00000000 00000000 0001 03 11719
c9113740: 00000003 00000000 00000000 0001 03 11717 /var/run/dbus/system_bus_socket
c9113900: 00000003 00000000 00000000 0001 03 11716
c9113c80: 00000003 00000000 00000000 0001 03 11711 /tmp/orbit-yaozhongkai/linc-c9d-0-6437df843b36c
c9113e40: 00000003 00000000 00000000 0001 03 11710
c9078040: 00000003 00000000 00000000 0001 03 11708 @/tmp/dbus-TT8HxW0iEY
UNIX域套接口的套接口表