projects / mirror_iproute2.git / blame
| Commit | Line | Data |
|---|---|---|
| 2a9721f1 SH |
1 | .TH IP\-MONITOR 8 "20 Dec 2011" "iproute2" "Linux" |
| 2 | .SH "NAME" | |
| 3 | ip monitor and rtmon \- state monitoring | |
| 4 | .SH "SYNOPSIS" | |
| 5 | .sp | |
| 6 | .ad l | |
| 7 | .in +8 | |
| 8 | .ti -8 | |
| 9 | .BR "ip monitor" " [ " all " |" | |
| 10 | .IR LISTofOBJECTS " ]" | |
| 11 | .sp | |
| 12 | ||
| 13 | .SH DESCRIPTION | |
| 14 | The | |
| 15 | .B ip | |
| 16 | utility can monitor the state of devices, addresses | |
| 17 | and routes continuously. This option has a slightly different format. | |
| 18 | Namely, the | |
| 19 | .B monitor | |
| 20 | command is the first in the command line and then the object list follows: | |
| 21 | ||
| 22 | .BR "ip monitor" " [ " all " |" | |
| 23 | .IR LISTofOBJECTS " ]" | |
| 24 | ||
| 25 | .I OBJECT-LIST | |
| 26 | is the list of object types that we want to monitor. | |
| 27 | It may contain | |
| 28 | .BR link ", " address " and " route "." | |
| 29 | If no | |
| 30 | .B file | |
| 31 | argument is given, | |
| 32 | .B ip | |
| 33 | opens RTNETLINK, listens on it and dumps state changes in the format | |
| 34 | described in previous sections. | |
| 35 | ||
| 36 | .P | |
| 37 | If a file name is given, it does not listen on RTNETLINK, | |
| 38 | but opens the file containing RTNETLINK messages saved in binary format | |
| 39 | and dumps them. Such a history file can be generated with the | |
| 40 | .B rtmon | |
| 41 | utility. This utility has a command line syntax similar to | |
| 42 | .BR "ip monitor" . | |
| 43 | Ideally, | |
| 44 | .B rtmon | |
| 45 | should be started before the first network configuration command | |
| 46 | is issued. F.e. if you insert: | |
| 47 | .sp | |
| 48 | .in +8 | |
| 49 | rtmon file /var/log/rtmon.log | |
| 50 | .in -8 | |
| 51 | .sp | |
| 52 | in a startup script, you will be able to view the full history | |
| 53 | later. | |
| 54 | ||
| 55 | .P | |
| 56 | Certainly, it is possible to start | |
| 57 | .B rtmon | |
| 58 | at any time. | |
| 59 | It prepends the history with the state snapshot dumped at the moment | |
| 60 | of starting. | |
| 61 | ||
| 62 | .SH SEE ALSO | |
| 63 | .br | |
| 64 | .BR ip (8) | |
| 65 | ||
| 66 | .SH AUTHOR | |
| 67 | Original Manpage by Michail Litvak <mci@owl.openwall.com> |