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carp: document the new VRRPv3 support

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Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D44776
This commit is contained in:
Kristof Provost 2024-04-12 16:09:04 +02:00
parent 5311e73337
commit 0d446a4303
2 changed files with 27 additions and 2 deletions
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16
sbin/ifconfig/ifconfig.8
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@ -25,7 +25,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE. .\" SUCH DAMAGE.
.\" .\"
.Dd November 08, 2023 .Dd May 1, 2024
.Dt IFCONFIG 8 .Dt IFCONFIG 8
.Os .Os
.Sh NAME .Sh NAME
@ -3151,6 +3151,20 @@ announcements to.
Restore the default destination address for (IPv4) Restore the default destination address for (IPv4)
.Xr carp 4 .Xr carp 4
announcements, which is ff02::12. announcements, which is ff02::12.
.It Cm carpver
Set the protocol version.
Valid choices are 2 (for
.Xr carp 4)
and 3 (for VRRPv3).
This can only be set when
.Xr carp 4
is initiated.
.It Cm vrrpprio
Set the VRRPv3 priority.
Valid values are 1-255.
.It Cm vrrpinterval
Set the VRRPv3 Master Advertisement Interval.
Values are in centiseconds.
.El .El
.Sh ENVIRONMENT .Sh ENVIRONMENT
The following environment variables affect the execution of The following environment variables affect the execution of

13
share/man/man4/carp.4
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@ -24,7 +24,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE. .\" SUCH DAMAGE.
.\" .\"
.Dd March 6, 2023 .Dd April 12, 2024
.Dt CARP 4 .Dt CARP 4
.Os .Os
.Sh NAME .Sh NAME
@ -93,6 +93,17 @@ or through the
.Dv SIOCSPEER .Dv SIOCSPEER
.Xr ioctl 2 . .Xr ioctl 2 .
.Pp .Pp
.Xr carp 4
can be configured to use either the non-standard CARP protocol, or VRRPv3 (RFC 5798).
Use the
.Cm carpver
parameter to select either 2 (CARP) or 3 (VRRPv3).
VRRPv3 specific parameters can be configured using the
.Cm vrrpprio
and
.Cm vrrpinterval
parameters.
.Pp
CARP virtual hosts can be configured on multicast-capable interfaces: Ethernet, CARP virtual hosts can be configured on multicast-capable interfaces: Ethernet,
layer 2 VLAN, FDDI and Token Ring. layer 2 VLAN, FDDI and Token Ring.
An arbitrary number of virtual host IDs can be configured on an interface. An arbitrary number of virtual host IDs can be configured on an interface.