Saturday 23 November 2013

Status of Monitors of F5 BIG-IP LTM

Status due to Monitors

Logical diagram of Health Monitor status




The logical diagram shows the relation ship between the different objects at each layer and how the status of the object, bubbles up to influence the layer above it.

The status of a Node influence the state of the Pool member at that IP address.

The status of the Pool Member determine the state of the Pool and status of the Pool determines the state of the associated virtual server.


States

  1. UP/ available :- The available state means that the object passed the monitor passed the monitor check and BIG-IP will send it new client connections.
  2. Down/Offline:- The offline state means that the object has not received any positive responses to monitor checks with in the timed out period. No new client connections will be sent to this object.
  3. Unknown:- The unknown state means that the no monitor has been assigned to the object or that the results of the monitor checks are still undetermined.

       Objects in a unknown state will be sent new client connections.

  1. Connection limit/ unavailable:- The unavailable state means that the object has reached a preset connection limit and that no new client connections will be sent to that object.


Monitor status Icons
Status options



Status from the Network Map Screen

  1. Expand the local traffic tab from the navigation panel, and select Network Map.
  2. The local traffic summary  screen, displays a number of objects and its status.
  3. Click the show map button for a view similar to health monitor logical diagrams.
  4. From this screen, there are also various statistics and configuration screens that provide monitor status and at glance show the health of the various parts of the system.
  


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