Forum Discussion
manc_63343
Nimbostratus
Jan 12, 2011forward to a different pool when pool is down
Is there an easy way to forward http requests to a different Vip when the Vip is marked down. for eg: it's the case when everything on that pool turns "red" and there still are some client connections...
hoolio
Cirrostratus
Jan 12, 2011Hi Manc,
The pool setting 'action on service down' is the closest I can think of to change the LTM behavior for handling existing connections when the current pool member is marked down by a monitor. Note that you can't send an HTTP redirect as the HTTP request/response cycle could be in any state. In other words, you couldn't send an HTTP redirect after LTM was already proxing the response content. However, a reset might force the client to resend the request (or hit refresh to manually resend the request).
Specifies how the system should respond when the target pool member becomes unavailable. The default is None.
* None: Specifies that the system does not select a different node. Selecting None causes the system to send traffic to the node even if it is down, until the next health check is done.
* Reject: Specifies that the system sends an RST or ICMP message.
* Drop: Specifies that the system simply cleans up the connection.
* Reselect: Specifies that the system selects a different node. Selecting Reselect causes the system to send traffic to a different node after receiving the message that the original node is down.
Aaron
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