01-10-2002
For what its worth.... the linux kernal has configuration flags that allow the source address of the outgoing packet to be specified. It is a well known problem that most flavors of UNIX force the IP address of the source address to be that of the sending interface. I'm not sure about other UNIX variants, but linux has a specific kernal-build flag to 'address' this problem.
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LEARN ABOUT CENTOS
ocf_heartbeat_sendarp
OCF_HEARTBEAT_SENDAR(7) OCF resource agents OCF_HEARTBEAT_SENDAR(7)
NAME
ocf_heartbeat_SendArp - Broadcasts unsolicited ARP announcements
SYNOPSIS
SendArp [start | stop | monitor | meta-data | validate-all]
DESCRIPTION
This RA can be used _instead_ of the IPaddr2 or IPaddr RA to send gratuitous ARP for an IP address on a given interface, without adding the
address to that interface. For example, if for some resaon you wanted to send gratuitous ARP for addresses managed by IPaddr2 or IPaddr on
an additional interface.
SUPPORTED PARAMETERS
ip
The IP address for sending ARP packet.
(required, string, no default)
nic
The NIC for sending ARP packet.
(required, string, no default)
background
Send ARPs in background. Set to false if you want to test if sending ARPs succeeded.
(optional, boolean, default true)
SUPPORTED ACTIONS
This resource agent supports the following actions (operations):
start
Starts the resource. Suggested minimum timeout: 20s.
stop
Stops the resource. Suggested minimum timeout: 20s.
monitor
Performs a detailed status check. Suggested minimum timeout: 20. Suggested interval: 10.
meta-data
Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5.
validate-all
Performs a validation of the resource configuration. Suggested minimum timeout: 20s.
EXAMPLE
The following is an example configuration for a SendArp resource using the crm(8) shell:
primitive p_SendArp ocf:heartbeat:SendArp
params
ip=string
nic=string
op monitor depth="0" timeout="20" interval="10"
SEE ALSO
http://www.linux-ha.org/wiki/SendArp_(resource_agent)
AUTHOR
Linux-HA contributors (see the resource agent source for information about individual authors)
resource-agents UNKNOWN 06/09/2014 OCF_HEARTBEAT_SENDAR(7)