Forum Discussion
Albert_Coll
Cirrus
CirrusIrule to modify the VIP route advertisement setting upon pool down
Hi, I have an Big-IP LTM in which I need to create a procedure to set a VIP "route advertisement" setting to "disabled" whenever a pool goes down. I think that this can be achieved by an iRule. Do...
What you could do is create a gateway monitor and give it an Alias Address of the gwy. Assign that to the pool as a second monitor that is the default pool of the virtual server the vip address is assigned to. That way, when the gwy fails, it marks the pool members down which in turn will retact the advertisment of the route.
James9780
Nimbostratus
NimbostratusThe network manager requests me to cease advertising the VIP through BGP as soon as the default route fails: I created a pool to properly monitor the default gateway, so that this pool gets down when the gwy stops replying icmps. MyMileStoneCard
Albert_CollCirrus
CirrusHi James,
Thank you for your post.
From your answer I understand that using pools for purposes not related to Virtual Servers, like signaling the availability of external IP addresses to cooperate with routing protocols, is not the right way to use them.
In that case, I guess BFD should be the right tool to use.
Regards.
Another way, you could write a custom script to monitor the LTM logs looking for the gwy pool to have no member available then run the TMSH commond to set the advertisment to disabled. Remember to also write a command to re-enable the advertisment when members become available.
