Forum Discussion
NiHo_202842
Cirrostratus
CirrostratusMove vIP to other cluster
Hello,
So I have a 11.5.1 cluster where we are having some problems. We have a fresh 12.1.1 cluster ready to take over some vIPs for testing.
I would like to flawlessly move vIPs from the old cluster to the new one. I prefer not to import the configuration to evade corrupt config or duplicate address problems.
Current method: Disable ARP on the old Virtual Address & enable this on the new one + wait for the ARP entry to expire on the L3 switches. However, I can never ping the virtual address when enabled on the new cluster. Ideas? The switch sees the new MAC address, but the ping does not reply. (nor when I ping the vIP from the new bigip itself.)
To move it back to the old cluster, I disabled ARP on the new cluster and re-enabled it on the old cluster. Then I needed to wait for the ARP entry to expire on the switches.
(Comparable to https://devcentral.f5.com/articles/ruby-and-icontrol-migrating-virtual-addresses-using-arp )
It seems the issue was something on the self-ip, it worked!
NiHo_202842It seems the issue was something on the self-ip, it worked!
Leonardo_Accor1Nimbostratus
Hi NiHo, I have a suggestion for you based on my personal experience. The steps I follow in a similar situation are: OLD CLUSTER 1) change the ip (with a fake ip) in the old VS 2) delete the ip address from Virtual Address list NEW CLUSTER 3) set the ip address in the new VS When set the new IP address, the F5 send a gratuitous arp to the upstream network, so the arp tables would adjust automatically, and no mac duplication would occour.
regards
Leonardo
- Leonardo_Accor1
No, I have just deleted the ip address in the virtual address list. In my experience this work fine.
- NiHo_202842
Hello Leonardo, thanks for responding! Did you also try just disabling & enabled ARP too?