F5 is upgrading its customer support chat feature on My.F5.com. Chat support will be unavailable from 6am-10am PST on 1/20/26. Refer to K000159584 for details.

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 ...
LTM
security
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