diff options
| author | Ryan Thomas McBride <mcbride@cvs.openbsd.org> | 2003-10-17 21:05:00 +0000 |
|---|---|---|
| committer | Ryan Thomas McBride <mcbride@cvs.openbsd.org> | 2003-10-17 21:05:00 +0000 |
| commit | faedf7a876de9ee825ed44b1f6f9dcdbe056bdcd (patch) | |
| tree | fb322664c24a0866845294d2d89651bb52715ad7 /lib/libc | |
| parent | 570077e03f36a1ce16a462a69f136900e3221923 (diff) | |
Common Address Redundancy Protocol
Allows multiple hosts to share an IP address, providing high availability
and load balancing.
Based on code by mickey@, with additional help from markus@
and Marco_Pfatschbacher@genua.de
ok deraadt@
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/gen/sysctl.3 | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/lib/libc/gen/sysctl.3 b/lib/libc/gen/sysctl.3 index 9b5b7c8a13b..910f4dc5130 100644 --- a/lib/libc/gen/sysctl.3 +++ b/lib/libc/gen/sysctl.3 @@ -1,4 +1,4 @@ -.\" $OpenBSD: sysctl.3,v 1.109 2003/09/09 10:00:24 jmc Exp $ +.\" $OpenBSD: sysctl.3,v 1.110 2003/10/17 21:04:57 mcbride Exp $ .\" .\" Copyright (c) 1993 .\" The Regents of the University of California. All rights reserved. @@ -999,6 +999,10 @@ The currently defined protocols and names are: .It udp checksum integer yes .It udp recvspace integer yes .It udp sendspace integer yes +.It carp allow integer yes +.It carp preempt integer yes +.It carp log integer yes +.It carp arpbalance integer yes .El .Pp The variables are as follows: @@ -1333,6 +1337,32 @@ receive buffer size. Returns the default .Tn UDP send buffer size. +.It Li carp.allow +If set to 0, incoming +.Tn CARP +packets will not be processed. +If set to any other value, processing will occur. +Enabled by default. +.It Li carp.preempt +If set to 0, +.Xr carp 4 +will not attempt to become master if it is recieving advertisements from an +other active master. +If set to any other value, carp will become master of the virtual host if it +believes it can send advertisements more frequently than the current master. +Enabled by default. +.It Li carp.log +If set to any value other than 0 +.Xr carp 4 +will log errors. +Enabled by default. +.It Li carp.arpbalance +If set to any value other than 0, the arp balancing functionality in carp is +enabled. +When arp requests are recieved for an IP address which is part of any virtual +host, carp will hash the source ip in the arp request to select one of the +virtual hosts from the set of all the virtual hosts which have that IP address. The master of that host will respond with the correct virtual MAC address. +Disabled by default. .El .It Dv PF_INET6 Get or set various global information about IPv6 |