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Forum Discussion

immu's avatar
immu
Icon for Cirrus rankCirrus
Sep 06, 2017

Offline (Enabled) - The children pool member(s) are down

Hi,

 

I have done configured VIP along with 2 pool members but the problem is I ma not able to ping the VIP from the F5...

 

I can see the nodes to be up but in members status it is showing me below error

 

Offline (Enabled) - The children pool member(s) are down.

 

Please help with the issue

 

Thanks, Imran

 

LTM
security

1 Reply

  • thistuffjuice_3's avatar
    thistuffjuice_3
    Icon for Altostratus rankAltostratus
    Sep 06, 2017

    Hi Imran

     

    Out of both monitor's, which are currently UP & Enabled (green circle)? Unavailable down will be showing as a red diamond.

     

    • LTM Node monitor's (L3 monitor) Are the nodes using the node default, or node specific?

       

    • LTM Pool-member monitor's (L4 application/service monitors)

       

    From the below, it sounds like your pool-member monitor is down. What kind of monitor do you have applied to the pool? If so, do you have a route to the back-end pool-member? (If your node is up, I would suggest so)

     

    Which is therefore likely that the server is not listening or open on the pool-member service port you have applied? My first suggestion would be to perform some telnet test's from the LTM on the service port you have specified on the pool-member, and a capture on the destination back-end servers to see if traffic is hitting the pool-member's and any relevant OS based firewall logs.

     

    I would also suggest you confirm if your VIP is using SNAT (Either a pool or auto-nat), and that your pool-member (servers) have a route back to this source address if the client via the F5 and potentially not out a different default-gateway.

     

    Hope this helps! Kind regards